SECURITIES AND EXCHANGE COMMISSION

                              Washington, DC 20549

                                    FORM 10-K

     Annual Report pursuant to Section 13 or 15(d)of the Securities Exchange Act
          of 1934For the fiscal year ended  March 31, 2000  Commission  File No.
          1-9114

 MYLAN LABORATORIES INC. (Exact name of registrant as specified in its charter)
                             Pennsylvania 25-1211621

(State or other  jurisdiction of incorporation  or  organization)  (IRS Employer
Identification No.)

    1030 Century Building
      130 Seventh Street
  Pittsburgh, Pennsylvania                            15222
(Address of principal executive offices)            (Zip Code)
Registrant's telephone number, including area code: 412-232-0100

Securities registered pursuant to Section 12(b) of the Act:

                                              Name of Each Exchange
        Title of Each Class                    on Which Registered
        -------------------                   ---------------------

Common Stock, par value $.50 per share       New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:    None

         Indicate by checkmark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.

         Yes...X....                                  No.......

         Indicate by checkmark if disclosure of  delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of registrant's knowledge, in definitive proxy or information

statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K.[ ]

            The aggregate market value of voting stock held by non-affiliates of
the  registrant,  computed by reference to the closing price of such stock as of
June 20, 2000:

                                    $2,137,112,992

The number of shares of Common Stock of the registrant outstanding
as of June 20, 2000:
                                      126,721,906

Documents incorporated by reference into this Report are:
  Annual Report to Shareholders for year ended
                                March 31, 2000...       Part I, Item 1
                                                        Part II, Items 5-8
  Proxy Statement for 2000 Annual Meeting of

                                Shareholders...         Part III, Items 10-13


                                                        PART I

     Item 1. Business

     Mylan Laboratories Inc., a Pennsylvania  corporation  incorporated in 1970,
and its  subsidiaries  (herein  referred to  collectively  as "the Company") are
engaged in  developing,  licensing,  manufacturing,  marketing and  distributing
generic and branded pharmaceutical  products.  References herein to fiscal 2000,
1999 and 1998 shall mean the fiscal years ended March 31,  2000,  1999 and 1998,
respectively.

     The   Company   conducts   business   through   its   generic  and  branded
pharmaceutical   operating  segments.  For  fiscal  2000,  the  generic  segment
represented  approximately  85% of revenues and the branded segment  represented
approximately 15% of revenues.  The financial information for operating segments
required by Item 1 is hereby incorporated by reference to Note R of the Notes to
Consolidated   Financial   Statements  in  the  accompanying  Annual  Report  to
Shareholders for the year ended March 31, 2000.

Generic Segment

     Through its subsidiaries,  Mylan  Pharmaceuticals Inc. and UDL Laboratories
Inc.,  acquired in fiscal  1996,  the Company is  recognized  as a leader in the
generic pharmaceutical industry.  Generic drugs are bioequivalent to their brand
name  counterparts  and are  generally  sold at prices  significantly  less than
branded  products.  Accordingly,  generics  provide a safe,  effective  and cost
efficient alternative to users of these branded products.

     The Company  attained  its  leadership  position  in the  generic  industry
through  its  ability  to  obtain  Abbreviated  New  Drug  Application  ("ANDA")
approvals,  uncompromising  quality control and devotion to customer service. To
build on this  position the Company has expanded  beyond its  traditional  solid
oral dose products and now offers unit dose, suspensions,  liquids,  transdermal
and extended  release  products.  The investment in research and development and
facilities to  manufacture  products in a variety of delivery  systems is one of
the many reasons the Company is a leader in the generic industry.

     The Company has entered into strategic alliances with several
pharmaceutical  companies  through  distribution and licensing  agreements which
provide the Company with  additional  products to broaden the Company's  product
line.  In  addition,  the Company  has  entered  into  product  development  and
licensing agreements, under which the Company has obtained rights to manufacture
and  distribute  other  pharmaceutical  products in exchange for funding of drug
development activities.

     Due to the non-exclusive  nature of generic products,  the generic industry
is comprised of numerous competitors  including  manufacturers that market their
products under their own names,  distributors that market products  manufactured
by others,  and brand name  companies  that market their products under both the
brand name and as a generic substitute. The non-exclusive nature thus allows for
significant price competition within the generic pharmaceutical industry.

Branded Segment

     Pharmaceutical  products  initially sold on an exclusive basis are known in
the industry as proprietary or branded  products.  These products  generally are
patent protected when introduced in the marketplace.

     The Company  operates its branded  segment  principally  through its Bertek
Pharmaceutical Inc. ("Bertek")  subsidiary.  Bertek's three therapeutic areas of
concentration  include  cardiology,  neurology and  dermatology.  The cardiology
focus is  built  upon  Maxzide(R),  Digitek(R)  and  Nitrek(R).  The  Maxzide(R)
products,  originally developed and manufactured by the Company, were reacquired
from American Home Products Corp. in fiscal 1997.

     The Company  continues to expand its branded  business  through  internally
developed  products  as well as  through  product  acquisitions.  To expand  its
presence in  dermatology,  on October 2, 1998, the Company  acquired 100% of the
outstanding  stock of  Penederm  Inc.  Bertek,  through  this  acquisition,  now
develops patented topical prescription  products at its research and development
facilities in Foster City,  California.  The current product portfolio primarily
consists of Avita(R), Mentax(R), and Acticin(R).

New Product Approvals

         The Company is required to secure and maintain  the U.S.  Food and Drug
Administration's ("FDA") approval for the products it intends to manufacture and
market.  The FDA grants such approval by approving  Company  submitted ANDAs for
generic  drug  products  and New Drug  Applications  ("NDAs")  for branded  drug
products.

         During fiscal 2000, the Company received 20 final approvals:  Verapamil
HCl ER Capsules,  Estradiol  Tablets,  Prednisolone  Syrup,  Clozapine  Tablets,
Diclofenac  Potassium  Tablets,  Estropipate  Tablets,  Dicyclomine HCl Tablets,
Dicyclomine  HCl Capsules,  Carbidopa and Levodopa ER Tablets,  Ticlopidine  HCl
Tablets, Nitroglycerin Delivery System (0.1mg/hr, 0.2mg/hr, 0.4mg/hr, 0.6mg/hr),
Nifedipine  ER  Tablets,  Ketoconazole  Tablets,  Hydrochlorothiazide  Capsules,
Terazosin HCl Anhydrous Capsules,  and Estradiol  Transdermal System (0.05mg/day
and  0.1mg/day).   Additionally,  in  fiscal  2000,  the  Company  received  two
supplements  for additional  strengths:  Atenolol 25mg Tablets and Glyburide 6mg
Tablets.

         Currently,  the  Company  has  before  the FDA 25 ANDAs  pending  final
approval and seven  Investigational New Drug ("IND") applications filed with the
FDA  for  new  innovator  compounds.  An  IND  is  the  result  of a  successful
preclinical development program and becomes part of the final NDA.

Products

     The information on the Company's product line set forth on pages8-12 of the
accompanying Annual Report to Shareholders for the year ended March 31, 2000, is
incorporated  herein by  reference.  For  fiscal  2000,  sales of the  Company's
antianxiety product group accounted for approximately 16% of net sales.

     During  fiscal  2000,  1999 and 1998,  the  Company  expensed  $49,121,000,
$61,843,000,  and  $46,278,000,  for research  and  development.  The  Company's
research and development  efforts are conducted primarily to qualify the Company
to  manufacture  ethical  pharmaceuticals  under  FDA  standards  and  approval.
Typically  research expenses related to the development of innovative  compounds
and the  filing of NDAs are  significantly  higher  than those  associated  with
ANDAs.  As the Company  continues to develop these products,  research  expenses
related to their development may increase.

Customers and Marketing

     The Company sells its products to  proprietary  and ethical  pharmaceutical
wholesalers and distributors,  drug store chains,  drug manufacturers and public
and  governmental  agencies.  Four  of the  Company's  customers  accounted  for
approximately  15%,  15%,  11%,  and 10% of net  sales  in  fiscal  2000.  Three
customers  accounted for approximately  15%, 14%, and 11% of net sales in fiscal
1999 and 13%, 12%, and 11% of net sales in fiscal 1998.

    Generic  pharmaceutical  products are marketed  directly to traditional drug
store chains, mass merchandising  chains, and food and drug chains. In addition,
product  is  distributed   through   wholesalers  and   distributors   servicing
non-warehousing chains, independent pharmacies, and institutional customers on a
contractual  basis.  Due  to  the  buying  patterns  of  certain  customers,  in
conjunction with incentive programs,  a disproportionate  amount of sales may be
recognized  in the latter part of a period.  Generic  products  involve  limited
public  promotion.  Approximately  70  employees  are  engaged  in  selling  and
servicing generic customers.

     Branded  pharmaceutical  products  are  marketed  directly  to health  care
professionals. Approximately 260 employees are engaged in marketing, selling and
servicing branded customers.

Competition

     With respect to each of the generic products it sells, the Company believes
it is usually subject to active  competition from numerous  companies.  The four
primary means of  competition  are service,  product  quality,  FDA approval and
price.  The competition  experienced by the Company varies among the markets and
classes of customers.  The Company has experienced  additional  competition from
brand-name competitors that have entered the generic pharmaceutical  industry by
creating generic  subsidiaries,  purchasing generic companies or licensing their
products prior to or as their patents expire.

     In addition to the increase in the number of competitors, the consolidation
of the Company's  customers  through  mergers and  acquisitions,  along with the
emergence of large buying groups representing  independent pharmacies and health
maintenance  organizations,  have contributed to severe price  deterioration for
many of the Company's  generic  products.  While the Company has increased  unit
volume of its generic products through specialized marketing programs,  this has
not fully offset the price declines the Company has experienced.

         In response to the price  declines  for generic  products,  the Company
raised  prices on 29 products  beginning in fiscal 1998 and  continuing  through
fiscal 1999. While these price increases had a favorable impact on net earnings,
such impact,  if any in the future,  will be affected by many factors  including
customer acceptance and the response by both existing and potential  competitors
as well as by both  existing and  potential  suppliers.  The Company  intends to
evaluate its pricing practices and make adjustments to the price of its products
when  appropriate.  The Company continues to work closely with its customers and
suppliers  to ensure that its full line of generic  products is  available  as a
cost  effective  alternative  to the innovator  products (See Part II, Item 7 of
this report for a  discussion  relating to the impact of the  Company's  pricing
policies).

     In the branded  segment,  the Company faces  competition from other branded
pharmaceutical  companies  that offer  products  which,  while having  different
properties,  are intended to provide  similar  benefits to the consumers.  These
competitors  tend to have  more  products,  a longer  history  in the  industry,
additional marketing and sales  representatives and significantly more financial
resources.  Each of these  factors or others  could  prevent  the  Company  from
achieving profitable results in the branded industry.

Product Liability

     Product  liability suits by consumers  represent a continuing risk to firms
in the  pharmaceutical  industry.  The Company strives to minimize such risks by
adherence to stringent quality control procedures.  Although the Company carries
insurance,  it believes that no reasonable amount of insurance can fully protect
it against all such risks  because of the  potential  liability  inherent in the
business of producing pharmaceuticals for human consumption.

Raw Materials

     The active  chemical  ingredients  and other materials and supplies used in
the Company's  pharmaceutical  manufacturing  operations are generally available
and purchased from many different foreign and domestic  suppliers.  However,  in
some  cases,   the  raw   materials   needed  by  the  Company  to   manufacture
pharmaceutical  products are available from a single FDA-approved supplier. Even
when more than one supplier  exists,  the Company may elect to list, and in some
cases has only  listed,  one  supplier  in its  applications  with the FDA.  New
suppliers  of the  active  ingredients  in drugs  must be  approved  by the FDA.
Accordingly,  in the event of an  interruption,  any  change in a  supplier  not
previously approved may take several months.

     In  addition,  recent  and  pending  regulatory  actions  may  make it more
difficult  for the Company and other  generic  pharmaceutical  manufacturers  to
obtain  commitments  from  foreign  suppliers  for raw  materials  prior  to the
expiration  of patents  on  branded  products.  The  unavailability  of such raw
materials could also impede the Company in its efforts to develop and obtain FDA
approval to manufacture and market new generic pharmaceutical products.

Regulation

     The Company's operations are subject to regulation under the Federal Food,
Drug and  Cosmetic  Act,  pursuant  to which  government  standards  as to "good
manufacturing practice",  product content,  purity, labeling,  effectiveness and
record  keeping (among other things) must be observed.  In this regard,  the FDA
has  extensive   regulatory   powers  over  the  activities  of   pharmaceutical
manufacturers including the power to seize and prohibit the sale of noncomplying
products and to halt operations of noncomplying manufacturers.

     In addition to the extensive regulation the Company faces under the Federal
Food,  Drug and Cosmetic Act, other  regulations  have also affected the generic
approval  process.  In June 1995, the Uruguay Round Agreements Act ("URAA") took
effect which extended patent terms pursuant to the General Agreements on Tariffs
and Trade. The extension of patent terms has delayed the introduction of generic
products by the Company.

     While URAA has already  extended  patent terms,  the brand  companies  have
further  delayed  the  approval  of  new  generic   products  by  filing  patent
infringement  suits under the Hatch-Waxman  Act. The Company upon filing an ANDA
with the FDA must make one of five  certifications  with  respect  to  innovator
patents.  If the company  certifies that its generic product is not infringing a
patent or that a patent is invalid,  the patentee can file suit. Brand companies
use this  certification  process to prevent generic  companies from  introducing
competing  generic  products by bringing suit for alleged  patent  infringement.
Once a suit is filed,  the FDA is prohibited  from approving the ANDA for thirty
months or until the suit is litigated or settled.

         Along with  delaying  the  approval  of generic  products,  the cost of
bringing a new generic product to market has risen  substantially  as the number
of these suits and the cost of defending  them  continues to increase.  All such
suits  settled to date have been on terms  favorable  to the  Company.  However,
until the laws are changed,  the Company expects this type of suit will continue
since it has proven a very  effective  way for brand  companies to delay generic
competition.

     The Company is subject to inspection and regulation under other federal and
state  legislation  relating  to  drugs,  narcotics  and  alcohol.  Many  of its
suppliers and customers, as well as the drug industry in general, are subject to
the same or similar  governmental  regulations.  The Company  also is subject to
various federal, state, and local environmental protection laws and regulations.
Compliance  with current  environmental  protection laws and regulations has not
had a material effect on the earnings,  cash flow or competitive position of the
Company.

     It is  impossible  for the  Company  to  predict  the  extent  to which its
operations  will be affected under the  regulations  discussed  above or any new
regulations which may be adopted by regulatory agencies.

Employees

     The Company employs  approximately  2,300 persons,  approximately  1,200 of
whom serve in clerical,  sales and  management  capacities.  The  remaining  are
engaged in production and maintenance activities.

     The production  and  maintenance  employees at the Company's  manufacturing
facilities in Morgantown,  West Virginia,  are represented by the Oil,  Chemical
and Atomic Workers International Union (AFL-CIO) and its Local Union 8-957 under
a contract which expires April 5, 2002.

Backlog

     At March 31, 2000,  the  uncompleted  portion of the  Company's  backlog of
orders was approximately  $28,226,000 as compared to approximately $7,388,000 at
March 31, 1999,  and  $19,899,000  at March 31, 1998.  Because of the relatively
short lead time required in filling  orders for its  products,  the Company does
not believe these backlog  amounts bear a significant  relationship  to sales or
income for any full twelve-month period.

Item 2. Properties

     The Company  operates  from  various  facilities  in the United  States and
Puerto Rico which have an aggregate of approximately 1,305,000 square feet.

     Mylan  Pharmaceuticals  Inc. owns  production,  warehouse,  laboratory  and
office  facilities in three  buildings in Morgantown,  West Virginia  containing
484,000 square feet. Mylan Pharmaceuticals  operates two distribution centers: a
166,000  square foot center in  Greensboro,  North  Carolina which it owns and a
38,000  square  foot  center in Reno,  Nevada  which it  operates  under a lease
expiring  in  2002.  A  new  sales  and   administration   facility   containing
approximately  65,000 square feet is currently under construction in Morgantown,
West Virginia.

     Mylan Inc.  owns a production  and office  facility in Caguas,  Puerto Rico
containing 115,000 square feet and a production  facility in Cidra,  Puerto Rico
containing 32,000 square feet.

     Bertek  Pharmaceuticals,   Inc.  owns  production,   warehouse  and  office
facilities in two buildings in Sugar Land, Texas  containing  70,000 square feet
and  research  and  development  facilities  in two  buildings  in Foster  City,
California containing 27,000 square feet under leases expiring in 2003.

     Mylan Technologies Inc. owns production,  warehouse, laboratory, and office
facilities  in three  buildings in Swanton and St.  Albans,  Vermont  containing
118,000  square  feet.  Mylan  Technologies  Inc.  also  operates a coating  and
extrusion  facility in St.  Albans  containing  71,000 square feet under a lease
expiring in 2015.

     UDL Laboratories Inc. owns production,  laboratory,  warehouse,  and office
facilities  in  three  buildings  in  Rockford,   Illinois  and  Largo,  Florida
containing 136,000 square feet. UDL also leases a warehouse facility in Rockford
containing 41,000 square feet under a lease expiring in 2005.

      The Company's  production  equipment includes that equipment  necessary to
produce and package tablet,  capsule,  aerosol,  liquid,  transdermal and powder
dosage forms. The Company  maintains seven analytical  testing  laboratories for
quality control.

     The Company's  production  facilities are operated primarily on a two-shift
basis.  Properties  and equipment are well  maintained  and adequate for present
operations.

     The  Company's  corporate  offices,  approximately  7,000 square feet,  are
located at 1030 Century Building, 130 Seventh Street, Pittsburgh,  Pennsylvania,
and are occupied under a lease expiring in 2003.

Item 3. Legal Proceedings

         In March  1999,  a  subsidiary  of the  Company  entered  into  binding
arbitration  related  to  a  dispute  with  KaiGai  Pharmaceutical,   Co.,  Ltd.
("KaiGai").  The  dispute  arose  out of a  license  and  supply  agreement  for
nitroglycerin  transdermal patches that both companies claim was breached by the
other party.  KaiGai sought damages in excess of $20,000,000.  In November 1999,
the  arbitration  panel denied  KaiGai's  request for  damages.  KaiGai filed an
appeal  and the  Company  has filed a motion to  dismiss  the  appeal due to the
appeal not being filed within the time period permitted.

         In June 1998,  the  Company  filed suit in Los Angeles  Superior  Court
against American Bioscience,  Inc. ("ABI"),  American  Pharmaceutical  Partners,
Inc.  ("APP") and certain of their  directors and officers.  The Company's  suit
seeks various  legal and  equitable  remedies.  The Los Angeles  Superior  Court
issued a preliminary  injunction order which, among other things,  prohibits the
defendants  from  transferring  or disposing  of funds,  assets,  technology  or
property  without  the  Company's  consent  or  commingling  assets,   property,
technology  or  personnel  with those of  another  company.  In June  1999,  the
defendants  filed an answer to and  cross-complaint  against  the  Company.  The
cross-complaint  alleges violations of California state laws,  interference with
contractual relations and prospective economic advantage,  fraud, slander, libel
and other allegations.  The cross-complaint  seeks unspecified  compensatory and
punitive damages.  The Company believes the cross-complaint is without merit and
intends to vigorously defend its position.

         In May 1998,  Genpharm  Inc.  filed in the general  division of Ontario
Court, Canada, a statement of claim against Novopharm Limited and Granutec, Inc.
("Novopharm"). The claim was filed to resolve contract interpretation issues and
collect  additional  funds due relating to an agreement  between the parties for
the sale of ranitidine.  In July 1998,  Novopharm  filed a counterclaim  against
Genpharm and the Company seeking  damages of up to $60,000,000.  The Company was
named in the  counterclaim due to its agreement with Genpharm in which it shared
in profits  derived  from the  product  ranitidine.  The  Company  believes  the
counterclaim is without merit and intends to vigorously to defend its position.

     On December 22, 1998,  the Federal Trade  Commission  ("FTC") filed suit in
U.S.  District  Court for the  District of Columbia  (the  "Court")  against the
Company.  The FTC's complaint alleges the Company engaged in restraint of trade,
monopolization,  attempted monopolization and conspiracy to monopolize,  arising
out of  certain  agreements  involving  the  supply  of raw  materials  used  to
manufacture two drugs.  The FTC also sued in the same case the foreign  supplier
of the raw  materials,  the  supplier's  parent  company  and its United  States
distributor.  Under the terms of the agreements  related to these raw materials,
the Company has agreed to indemnify these parties.

     The Company is a party to other suits involving the Attorneys  General from
33 states and more than 25 putative  class  actions that allege the same conduct
alleged  in the FTC  suit  as  well as  alleged  violations  of  state  consumer
protection  laws. A qui tam action was  commenced by a private party in the U.S.
District Court for the District of South  Carolina  purportedly on behalf of the
United States alleging violations of the False Claims Act and other statutes.

     The relief  sought by the FTC  includes an  injunction  barring the Company
from engaging in the  challenged  conduct,  recision of certain  agreements  and
disgorgement  in excess of  $120,000,000.  The states and private  parties  seek
similar  relief,  treble damages and attorneys'  fees. The Company's  motions to
dismiss several of the private actions were granted.

     A class action suit was filed  alleging  violations  of federal  securities
laws by the Company and certain  directors and officers of the Company.  Without
specifying a dollar amount, the suit sought compensatory  damages. The Company's
motion to dismiss the federal  securities case was granted on December 22, 1999.
An appeal is pending.

     The Company had filed motions to dismiss the FTC complaint and  significant
portions  of the State  Attorneys  General  complaint.  In July 1999,  the Court
denied the Company's  motion to dismiss the FTC  complaint.  The Company filed a
motion  requesting  the  Court  to  certify  its  ruling  with  respect  to  the
jurisdictional  issue for expedited  appeal to the U.S. Court of Appeals for the
District of  Columbia.  This motion was  denied.  The Court  granted in part and
denied in part the Company's  motion to dismiss  portions of the State Attorneys
General  complaint.  In so doing, the Court limited certain theories of recovery
asserted by the states.  Some  States  filed a motion with the Court  requesting
that it reconsider  certain claims that were  dismissed,  and, in December 1999,
the Court reinstated certain claims.

     The Company believes that it has meritorious  defenses to the claims in all
FTC and related  suits and  intends to  vigorously  defend  them.  Although  the
Company believes it has meritorious defenses to the claims, an adverse result in
these  suits could have a material  adverse  effect on the  Company's  financial
position and results of its operations.

     The  Company  is  involved  in various  other  legal  proceedings  that are
considered  normal to its  business.  While it is not  feasible  to predict  the
ultimate outcome of such  proceedings,  it is the opinion of management that the
outcome of these suits will not have a material  adverse effect on the Company's
operations, financial position, or liquidity.

Item 4. Submission of Matters to a Vote of Security Holders

               Not applicable.


EXECUTIVE OFFICERS OF THE REGISTRANT

The  names,  ages and  positions  of the  Company's  executive  officers  are as
follows:

    Milan Puskar                  65      Chairman and Chief Executive Officer
    Richard F. Moldin             52      President and Chief Operating Officer
    Dana G. Barnett               59      Executive Vice President
    Louis J. DeBone               54      Senior Vice President
    Roger L. Foster               53      Vice President and General Counsel
    Roderick P. Jackson           60      Senior Vice President
    Donald C. Schilling           50      Vice President-Finance and Chief
                                                         Financial Officer

    Patricia A. Sunseri           60      Vice President-Investor and
                                              Public Relations
    Robert W. Smiley              78      Secretary

     Mr.  Puskar was  employed  by the  Company  from 1961 to 1972 and served in
various positions, including Secretary-Treasurer, Executive Vice President and a
member of the Board of Directors.  From 1972 to 1975,  Mr. Puskar served as Vice
President and General Manager of the Cincinnati  division of ICN Pharmaceuticals
Inc. In addition, he has served as a partner of several  pharmaceutical firms in
foreign  countries.  Currently,  Mr.  Puskar  is a  director  of  West  Virginia
University  Foundation,  Morgantown,  West  Virginia,  and Duquesne  University,
Pittsburgh,  Pennsylvania.  Mr.  Puskar  served as President of the Company from
1976 to March 2000 and as Vice  Chairman of the Board from 1980.  He was elected
Chairman of the Board and Chief Executive Officer in November 1993.

     Mr. Moldin was employed by the Company in April 2000. Prior to assuming his
position  as  President  and Chief  Operating  Officer  of the  Company,  he was
President and Chief  Executive  Officer of Faulding Inc. from 1995 to 2000.  Mr.
Moldin served in various executive and management positions for Wellcome plc. in
England, Australia and the United States from 1979 to 1995.

     Mr. Barnett was employed by the Company in 1966. His responsibilities  have
covered production,  quality control and product development. Mr. Barnett became
Vice  President  in 1974,  Senior  Vice  President  in 1978 and  Executive  Vice
President  in 1987.  He was elected  President  and Chief  Executive  Officer of
Somerset Pharmaceuticals, Inc. in June 1991, and in August 1995, he was elevated
to Chairman and Chief Executive Officer.

     Mr. DeBone has been employed by the Company since September 1987.  Prior to
assuming   his   present   position   in   May   1999,   he   served   as   Vice
President-Operations  and  Vice  President-Quality  Control.  He was  previously
employed  with the  Company  from  March 1976  until  June 1986 as  Director  of
Manufacturing.

     Mr. Foster has been employed by the Company since May 1984.  Prior to
assuming his present position in June 1995 as Vice President and General Counsel
he served as Director of Legal Services and as Director of Governmental Affairs.

     Mr. Jackson has been employed by the Company since March 1986.  Prior to
assuming his present position in October 1992 as Senior Vice President, he
served as Vice President-Marketing and Sales.

     Mr. Schilling has been employed by the Company since October
1997.  Prior to assuming his present position as Vice President-Finance, he was
Vice President of Finance & Administration for Plastics Manufacturing Inc. in
Harrisburg, NC from 1991 to 1997.

     Mrs.  Sunseri has served as a Director of the Company  since April 1997, as
Vice  President-Investor  and Public  Relations of the Company since 1989 and as
Director of Investor Relations of the Company from 1984 to 1989.

     Mr.  Smiley has been the Secretary of the Company since 1976. He previously
served on the Company's  Board of Directors.  In October 1992, he joined the law
firm of Doepken Keevican & Weiss Professional,  which provided legal services to
the Company in fiscal 2000.  Previously,  he was a partner of Smiley,  McGinty &
Steger for more than five years.

         No  family  relationships  exist  between  any of the  above  executive
officers.  Officers  of the  Company  serve  at the  pleasure  of the  Board  of
Directors.

                                PART II

Item 5. Market for Registrant's Common Equity and
        Related Stockholder Matters

     The information  required by Item 5 is hereby  incorporated by reference to
pp. 14 and 41 of the  accompanying  Annual Report to  Shareholders  for the year
ended March 31, 2000.

Item 6. Selected Financial Data

     The information  required by Item 6 is hereby  incorporated by reference to
p. 14 of the accompanying Annual Report to Shareholders for the year ended March
31, 2000.

Item 7.  Management's Discussion and Analysis of Financial Condition and

Results of Operations

     The information  required by Item 7 is hereby  incorporated by reference to
pp. 15-21 of the  accompanying  Annual Report to Shareholders for the year ended
March 31, 2000.

Item  7A.  Quantitative  and  Qualitative  Disclosures  About  Market  Risk  The
information  required by Item 7A is hereby incorporated by reference to p. 20 of
the  accompanying  Annual  Report to  Shareholders  for the year ended March 31,
2000.

Item 8. Financial  Statements and Supplementary Data The information required by
Item 8 is hereby  incorporated  by reference  to pp.  22-41 of the  accompanying
Annual Report to Shareholders for the year ended March 31, 2000.

Item 9. Changes in and Disagreements with
        Accountants on Accounting and Financial Disclosure

     Not applicable.

                              PART III

Item 10. Directors and Executive Officers of the Registrant

     The information as to directors required by Item 10 is hereby  incorporated
by reference to pp. 2 and 3 of the Company's 2000 Proxy  Statement.  Information
concerning  executive  officers is  provided in PART I of this report  under the
caption "Executive Officers of the Registrant".

Item 11. Executive Compensation

     The information required by Item 11 is hereby incorporated by reference to
pp. 8-9 of the Company's 2000 Proxy Statement.

Item 12.  Security  Ownership of Certain  Beneficial  Owners and  Management The
information  required by Item 12 is hereby  incorporated  by reference to pp. 10
and 11 of the Company's 2000 Proxy Statement.

Item 13. Certain Relationships and Related Transactions

     The information  required by Item 13 is hereby incorporated by reference to
p. 3 of the Company's 2000 Proxy Statement and Part I of this report.

                             PART IV

Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K

     (a) 1.  List of Financial Statements

                                                                 Annual Report
                                                                     Page

                                                                    Number

         INCLUDED IN ANNUAL REPORT TO SHAREHOLDERS:
         Consolidated Balance Sheets..............................  22-23
         Consolidated Statements of Earnings......................     24
         Consolidated Statements of Shareholders' Equity .........     25
         Consolidated Statements of Cash Flows....................  26-27
         Notes to Consolidated Financial Statements...............  28-39
         Independent Auditors' Report.............................     40

            2.  Financial Statement Schedules

                    The information required by this Item is incorporated herein
                    by  reference to Exhibit 99. All other  schedules  have been
                    omitted because they are not required or the information can
                    be  derived  from  the  Consolidated   Financial  Statements
                    included in the  accompanying  Annual Report to Shareholders
                    for the year ended March 31, 2000.

            3.  Exhibits

                   (3)(a)     Amended and Restated  Articles of Incorporation of
                              the  registrant,  filed as Exhibit 4.2 to the Form
                              S-8 on  December  23,  1997  (registration  number
                              333-43081) and incorporated herein by reference.

                      (b)     By-laws  of the  registrant,  as  amended to date,
                              filed as Exhibit  4.3 to the Form S-8 on  December
                              23,  1997  (registration   number  333-43081)  and
                              incorporated herein by reference.

                   (4)(a)     Rights Agreement,  as amended to date, between the
                              Company and American  Stock  Transfer & Trust Co.,
                              filed as Exhibit 4.1 to Form 8-K dated  August 30,
                              1996  and   incorporated   herein  by   reference.
                              Amendment is  incorporated  herein by reference to
                              Exhibit 1 to Form 8-A/A dated March 31, 2000.

                  (10)(a)     Mylan Laboratories Inc. 1986 Incentive Stock
                              Option Plan, as amended to date, filed as
                              Exhibit 10(b) to Form 10-K for fiscal year ended
                              March 31, 1993 and incorporated herein by
                              reference.

                      (b)     "Salary Continuation Plan" with Milan Puskar, Dana
                              G.  Barnett and C.B.  Todd each dated  January 27,
                              1995 and filed as  Exhibit  10(b) to Form 10-K for
                              fiscal year ended March 31, 1995 and  incorporated
                              herein by reference.

                      (c)     "Salary  Continuation  Plan" with Louis J.  DeBone
                              dated  March 14,  1995 filed as  Exhibit  10(c) to
                              Form 10-K for fiscal year ended March 31, 1995 and
                              incorporated herein by reference.

                        (d)   Employment  contract with Milan Puskar dated April
                              28,  1983,  as amended  to date,  filed as Exhibit
                              10(e) to Form 10-K for fiscal year ended March 31,
                              1993 and incorporated herein by reference.

                        (e)   Split  Dollar  Life  Insurance   Arrangement  with
                              McKnight  Irrevocable Trust filed as Exhibit 10(g)
                              to Form 10-K for fiscal  year ended March 31, 1994
                              and incorporated herein by reference.

                    (f)  "Service  Benefit  Agreement"  with Laurence S. DeLynn,
                         John C. Gaisford, M.D., and Robert W. Smiley, Esq. each
                         dated  January 27,  1995 and filed as Exhibit  10(g) to
                         Form 10-K for  fiscal  year  ended  March 31,  1995 and
                         incorporated herein by reference.

                   (g) Split Dollar Life Insurance Arrangement with Milan Puskar

                          Irrevocable  Trust filed as Exhibit 10(h) to Form 10-K
                              for the  fiscal  year  ended  March  31,  1996 and
                              incorporated herein by reference.

                      (h)     Split Dollar Life Insurance  Arrangement  with the
                              Todd  Family  Irrevocable  Trust  filed as Exhibit
                              10(i) to Form 10-K for the fiscal year ended March
                              31, 1997 and incorporated herein by reference.

                      (i)     Split Dollar Life Insurance  Arrangement  with the
                              Dana G. Barnett  Irrevocable Family Trust filed as
                              Exhibit  10(j) to Form  10-K for the  fiscal  year
                              ended  March 31, 1997 and  incorporated  herein by
                              reference.

                      (j)     "Salary  Continuation  Plan" with Patricia Sunseri
                              dated  March 14,  1995 filed as  Exhibit  10(k) to
                              Form 10-K for the fiscal year ended March 31, 1997
                              and incorporated herein by reference.

                      (k)    Mylan Laboratories Inc. 1997 Incentive Stock Option
                             Plan, as amended to date, filed herewith.

                      (l)    Mylan Laboratories Inc. 1992 Nonemployee Director
                             Stock Option Plan, as amended to date, filed as
                             Exhibit 10(l) to Form 10-K for the fiscal year
                             ended March 31, 1998 and incorporated herein
                             by reference.

                      (m)     "Salary   Continuation   Plan"  with  Roderick  P.
                              Jackson  dated March 14, 1995, as amended to date,
                              filed as  Exhibit  10(m) to Form  10-K for  fiscal
                              year ended March 31, 1999 and incorporated  herein
                              by reference.

              (13)       Fiscal 2000 Annual Report to Shareholders which, except
                         for  those  portions  incorporated  by  reference,   is
                         furnished  solely for the information of the Securities
                         and  Exchange  Commission  and  is  not  deemed  to  be
                         "filed".

              (21)  Subsidiaries of the registrant, filed herewith.

              (23)  Consents of Independent Auditors, filed herewith.

              (27)  Financial Data Schedule, filed herewith.
              (99)  Consolidated financial statements of Somerset
                    Pharmaceuticals, Inc. for years ended December 31, 1999,
                    1998, and 1997, filed herewith.

         (b) Reports on Form 8-K

              The Company  was not  required to file a report on Form 8-K during
the quarter ended March 31, 2000.

                              SIGNATURES

     Pursuant to the requirements of section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Date:    June 22, 2000
                           by /S/ MILAN PUSKAR

                              Milan Puskar

                                    Chairman and Chief Executive Officer

         Pursuant to the requirements of the Securities Exchange Act of 1934,
this  Report has been  signed  below by the  following  persons on behalf of the
registrant and in the capacities and on the dates indicated.

/S/ MILAN PUSKAR         June 22, 2000    /S/ DANA G. BARNETT   June 22, 2000
Milan Puskar                                         Dana G. Barnett
Chairman and Chief Executive Officer      Executive Vice President and Director
(Principal executive officer)


/S/ LAURENCE S. DELYNN  June 22, 2000    /S/ DOUGLAS J. LEECH    June 22, 2000
Laurence S. DeLynn                                   Douglas J. Leech
Director                                             Director

/S/PATRICIA A. SUNSERI  June 22, 2000    /S/JOHN C. GAISFORD,M.D.June 22, 2000
Patricia A. Sunseri                                  John C. Gaisford,M.D.
Vice President and Director                                   Director

/S/ C.B. TODD           June 22, 2000    /S/ DONALD C. SCHILLING  June 22, 2000
C.B. Todd                                                    Donald C. Schilling
Director                                       Vice President-Finance and Chief
                                               Financial Officer
                                               (Principal financial officer
                                               and principal accounting officer)










                            MYLAN LABORATORIES INC.

                        1997 INCENTIVE STOCK OPTION PLAN

                         (AS AMENDED THROUGH APRIL 2000)


MYLAN LABORATORIES INC. 1997 INCENTIVE STOCK OPTION PLAN 1. PLAN NAME This Plan shall be known as the "MYLAN LABORATORIES INC. 1997 Incentive Stock Option Plan" (the "Plan"). 2. EFFECTIVE DATE The effective date of the Plan shall be January 23, 1997; provided, however, that if the shareholders of MYLAN LABORATORIES INC. (the "Corporation") do not approve the Plan by January 22, 1998, no Options (as defined in paragraph 3) granted under the Plan shall constitute Incentive Stock Options (as defined in paragraph 5(c)). 3. PURPOSE The purpose of this Plan is to provide a means whereby the Corporation may, through the grant of options to purchase Class A Common Stock, par value $.50 per share ("Common Stock") of the Corporation ("Options") to employees (including officers and directors who are also employees) and nonemployee consultants, agents and advisors to attract, retain and motivate these persons to exert their best efforts on behalf of the Corporation and its subsidiaries. Collectively, these persons are called "key employees." 4. NUMBER OF SHARES AVAILABLE UNDER PLAN Options may be granted by the Corporation from time to time to key employees of the Corporation and its subsidiaries to purchase an aggregate of Ten Million (10,000,000) shares of Common Stock of the Corporation and Ten Million (10,000,000) shares of Common Stock shall be reserved for Options granted under the Plan (subject to adjustment as provided in paragraph 6(i)). Shares issued upon exercise of Options granted under the Plan may be authorized and unissued shares or shares held by the Corporation in its treasury. If any Option granted under the Plan shall terminate, expire or be canceled as to any shares, new Options may thereafter be granted under the Plan covering those shares, subject to the limitations imposed under paragraph 5(a)(2).

5. ADMINISTRATION The Plan shall be administered under the terms of this Section 5. (a) STOCK OPTION COMMITTEE. Except as further provided in this paragraph 5(a), the Plan shall be administered by a Stock Option Committee ("Committee") consisting of at least two members of the Board of Directors of the Corporation who shall be appointed by, and serve at the pleasure of, the Board of Directors. The composition of the Committee shall be controlled by the following provisions of this paragraph 5(a). (1) Each member of the Committee must be a "non-employee director" within the meaning of Rule 16b-3, as that Rule may be amended from time to time ("Rule 16b-3"), under the Securities Exchange Act of 1934, as amended, when the Committee is acting to grant Options to those key employees who are also directors or officers. Those actions which require a Committee of non-employee directors include: (i) Selecting the directors or officers to whom Options may be granted; (ii) Deciding or determining the timing, price, number or other terms and conditions of, or shares subject to, each Option made to a key employee who is also a director or officer; and (iii)Interpreting the Plan or Option agreements with regard to Options granted to a director or officer. An officer or director who also has an employment status described in clause (i), (ii) or (iii) of paragraph 5(a)(2), shall also be limited to a maximum number of Options under the Plan as provided under paragraph 5(a)(3). (2) Each member of the Committee must be an "outside director" within the meaning of Regulation ss.1.162-27 (e)(3), as that Regulation may be amended from time to time (the "Regulation"), under the Internal Revenue Code of 1986, as amended (the "Code"), when the Committee is acting to grant Options to those key employees who have the following employment status with the Corporation: (i) The chief executive officer of the corporation or the individual acting in that capacity; (ii) One of the four highest compensated officers (other than the chief executive officer) of the Corporation; or (iii)In the judgment of the Board of Directors, is deemed reasonably likely to become an employee described in clause (i) or (ii) of this paragraph 5(a)(2) within the exercise period of any contemplated option. Those actions which require a Committee of outside directors include the same actions as is described in the immediately preceding paragraph except that the employment relationships described in clauses (i), (ii) and (iii) of this paragraph 5(a)(2) shall be substituted for the references to director or officer. In addition, the provisions of paragraph 5(a)(3) shall apply. If an individual who is being considered for a grant of Options is an officer or director and also has an employment status described in clause (i), (ii) or (iii) of this paragraph 5(a)(2), the members of the Committee shall consist of whichever of the following director categories is the more restrictive, non-employee directors as defined in Section 5(a)(1), or of outside directors as defined in this Section 5(a)(2). (3) In addition to any other limitation, the Committee shall not award to any employee described in clause (i), (ii) or (iii) of paragraph 5(a)(2) Options in any calendar year to purchase more than three hundred thousand (300,000) shares of Common Stock, plus any amount of shares that were available within this limit in any prior year for which Options were not granted. Further, any Options awarded to such an employee which are thereafter canceled shall continue to count against the maximum number of Options which may be awarded to that employee, and any Option of such an employee which is later repriced shall be deemed to be the cancellation of the original Option and the grant of a new Option for purposes determining the number of Options awarded to that employee. (b) COMMITTEE ACTION. A majority of the members of the Committee shall constitute a quorum, and the action (1) of a majority of the members present at a meeting at which a quorum is present or (2) authorized in writing by all members, shall be the action of the Committee. A member participating in a meeting by telephone or similar communications equipment shall be deemed present for this purpose if the member or members who are present in person can hear him and he can hear them. (c) AUTHORITY OF THE COMMITTEE. The Committee shall have the power: (1) to determine and designate in its absolute discretion from time to time those employees of the Corporation, its subsidiaries, independent agents, consultants and attorneys who by reason of the nature of their duties, their present and potential contributions to the success of the Corporation and other factors, who are eligible to participate in the Plan and to whom Options are to be granted; provided, however, no Option shall be granted after January 23, 2007, the tenth (10th) anniversary of the original adoption date of the Plan; (2) to authorize the granting of (i) Options which qualify as Incentive Stock Options within the meaning of Code Section 422 ("Incentive Stock Option"); provided that only employees of the Corporation may be granted Incentive Stock Options, (ii) Options which do not qualify under Code Section 422 ("Nonqualified Stock Option"); provided that only Nonqualified Stock Options may be granted to persons who are not employees, but who are otherwise eligible for grant of options; (3) to determine the number of shares subject to each Option, subject to paragraph 5(a); (4) to determine the time or times and the manner when each Option shall be exercisable and the duration of the exercise period. The Committee may interpret the Plan, prescribe, amend and rescind any rules and regulations necessary or appropriate for the administration of the Plan and make other determinations and take other action as it deems necessary or advisable. Without limiting the generality of the foregoing sentence the Committee may, in its discretion, treat all or any portion of any period during which an Optionee is on military or an approved leave of absence from the Corporation as a period of employment of the Optionee by the Corporation, as the case may be, for the purpose of accrual of rights under an Option. An interpretation, determination or other action made or taken by the Committee shall be final, binding and conclusive. (d) INDEMNIFICATION OF COMMITTEE. In addition to other rights that they may have as Directors or as members of the Committee, the members of the Committee shall be indemnified by the Corporation against the reasonable expenses, including attorney's fees actually and reasonably incurred in connection with the defense of any action, suit or proceeding, or in connection with any appeal therein, to which they or any of them may be a party by reason of any action taken or failure to act under or in connection with the Plan or any Option granted thereunder, and against all amounts paid by them in settlement thereof or paid by them in satisfaction of a judgment in any such action, suit or proceeding, except in relation to matters as to which it shall be adjudged in the action, suit or proceeding that the Committee member's action or failure to act constituted self-dealing, willful misconduct or recklessness; provided that within sixty (60) days after institution of any action, suit or proceeding a Committee member shall in writing offer the Corporation the opportunity, at its own expense, to handle and defend the same. 6. TERMS AND CONDITIONS Each Option granted under the Plan shall be evidenced by an agreement, in a form approved by the Committee, which shall be subject to the following expressed terms and conditions and to other terms and conditions as the Committee may deem appropriate, including those imposed by Section 8 following amendment of the Plan requiring shareholder approval. (a) OPTION PERIOD. Each Option agreement shall specify the period for which the Option hereunder is granted (which in no event shall exceed ten (10) years from the date of the grant of the Option) and shall provide that the Option shall expire at the end of that period. (b) OPTION PRICE. The Option price per share shall be determined by the Committee at the time any Option is granted, and shall not be less than the fair market value (but in no event less than the par value if any) of the Common Stock of the Corporation on the date the Option is granted, as determined by the Committee. (c) AGGREGATE OWNERSHIP AND EXERCISE LIMITATIONS. The aggregate fair market value (determined at the time the Option is granted) of the stock with respect to which Incentive Stock Options are exercisable for the first time by an Optionee during any calendar year (under all plans of the Corporation and its subsidiaries and parents) shall not exceed $100,000. (d) EXERCISE OF OPTION. Subject in each case to the provisions of paragraphs (a), (b), (c), (e) and (f) of this Section 6, any Option may be exercised, to the extent exercisable by its terms, at the time or times as may be determined by the Committee at the time of grant; subject, however, to the following limitations. No portion of an Option granted to an employee of the Corporation or its subsidiaries shall be exercisable unless the Optionee has been employed by the Corporation or its subsidiaries until the second anniversary of the date of the grant of the Option. Between the second anniversary and the third anniversary of the date of the grant of the Option, if the Optionee is still employed by the Corporation or its subsidiaries, the Optionee may exercise up to twenty-five percent (25%) of the Option. Between the third anniversary and the fourth anniversary of the date of the grant of the Option, if the Optionee is still employed by the Corporation or its subsidiaries, the Optionee may exercise cumulatively up to fifty percent (50%) of the Option. On and after the fourth anniversary of the date of the grant of the Option (but in no event longer than the period provided in paragraph 6(a)), if the Optionee is still employed by the Corporation or its subsidiaries, the Optionee may exercise cumulatively up to one hundred percent (100%) of the Option. The Committee, in its sole discretion, however, may reduce or eliminate the limitations provided in the preceding four sentences ("Vesting Limitations") for Options granted to any employee having at least two years of continuous service with the Corporation or its subsidiaries. Notwithstanding the Vesting Limitations, if an Optionee's employment is terminated due to death, Permanent Disability (as defined in paragraph 6(f)), or retirement as determined in the sole and absolute discretion of the Committee ("Retirement"), one hundred percent (100%) of the Optionee's Option may be exercised in accordance with the provisions of paragraph 6(f). Vesting provisions substantially similar to the Vesting Limitations may be imposed upon any Option granted to a nonemployee Optionee at the sole and absolute discretion of the Committee. (e) PAYMENT OF PURCHASE PRICE AND TAXES UPON EXERCISE. The purchase price of Common Stock as to which an Option shall be exercised and any employment taxes arising therefrom shall be paid to the Corporation at the time of exercise in cash or, at the discretion of the Committee, in stock of the Corporation; payment in stock of the Corporation shall include the right of an Optionee to elect to receive the shares of Common Stock issuable upon exercise of an Option reduced by that number of shares of Common Stock necessary to satisfy the purchase price and/or the minimum statutory withholding requirements for employment taxes (hereinafter "Net Exercise").

(f) EXERCISE IN THE EVENT OF DEATH OR TERMINATION OF EMPLOYMENT. (1) If any Optionee who is an employee of the Corporation or its subsidiaries shall die (i) while an employee of the Corporation or its subsidiaries or (ii) within three (3) months after termination of the Optionee's employment with the Corporation or its subsidiaries because the Optionee is permanently and totally disabled (within the meaning of Code Section 22(e)(3)) ("Permanent Disability") or because of Retirement, any Option of the Optionee may be exercised by the person or persons to whom the Optionee's rights under the Option pass by will or applicable law or if no person has that right, by the Optionee's executors or administrators, at any time, or from time to time, within one (1) year after the date of the death, but in no event later than the expiration date specified in paragraph (a) of this Section 6. (2) If an Optionee's employment by the Corporation or its subsidiaries shall terminate because of Permanent Disability, the Optionee may exercise any Option of the Optionee at any time, or from time to time, within one (1) year of the date of the termination of employment, but in no event later than the expiration date specified in paragraph (a) of this Section 6. (3) If an Optionee's employment by the Corporation or its subsidiaries shall terminate because of indefinite lay-off, the Optionee may exercise any Option of the Optionee to the extent that the Optionee may be entitled to do so at the date of the indefinite lay-off, at any time, or from time to time, within three (3) months of the date of the termination of employment, but in no event later than the expiration date specified in paragraph (a) of this Section 6. (4) If an Optionee's employment by the Corporation or its subsidiaries shall terminate because of Retirement, any Option of the Optionee may be exercised by the Optionee at any time, or from time to time, within three (3) months of the date of the termination of employment, but in no event later than the expiration date specified in paragraph (a) of this Section 6. (5) Except as provided by (1) through (4) of this paragraph (f) of Section 6, if an Optionee's employment shall cease by reason of a voluntary or involuntary termination, either with or without cause, any Option of the Optionee shall terminate immediately. (6) If an Optionee is not an employee of the Corporation or its subsidiaries when the Optionee is granted an Option, that Option shall terminate one (1) year after the date of the Optionee's death, but in no event later than the expiration date specified in paragraph (a) of this Section 6. If such an Optionee dies, any Option of the Optionee may be exercised by the person to whom the Optionee's rights under the Option pass by will or applicable law or if no person has that right, by the Optionee's executors or administrators, at any time, or from time to time within one (1) year after the date of the death, but in no event later than the expiration date specified in paragraph (a) of this Section 6. Notwithstanding the foregoing, for Options granted on or after January 26, 2000, the Options, to the extent that the Options have vested on the date of any termination of the employment of the Optionee by the Corporation, shall be exercisable at any time, or from time to time, but in no event later than the expiration date specified in paragraph (a) of Section 4, so long as the employment of the Optionee by the Corporation has not been voluntarily terminated by the Optionee and so long as that employment was not terminated by the Corporation for cause. Options held by Optionees who voluntarily terminate employment or whose employment is terminated for cause shall in any event expire on the Optionee's last day of employment.

(g) PERMITTED TRANSFERS. Options granted under the Plan shall be transferrable by will or by the laws of descent and distribution. In addition, Nonqualified Stock Options granted under the Plan can be transferred during the lifetime of the Optionee only if all of the following conditions are satisfied: (1) the Stock Option Committee has approved the proposed transfer in writing; (2) the proposed transfer is to be made without consideration; (3) the proposed transferee is a member or members of the Optionee's immediate family (i.e., a child, or children, a grandchild or grandchildren, or the Optionee's spouse) and/or to a trust established for the benefit of an immediate family member or members, or a family limited partnership which includes the Optionee and/or members of the Optionee's immediate family, or a trust established for the benefit of the Optionee, and/or an immediate family member or members and a charity exempt from taxation under Internal Revenue Code 501(c)(3); and (4) after transfer, each option transferred by the Optionee shall remain subject to the provisions of the Plan under which it was granted. (h) INVESTMENT REPRESENTATION. Each Option agreement shall provide that upon demand by the Committee, the Optionee (or any person acting under paragraph 6(f)) shall deliver a written representation to the Committee at the time of any exercise of an Option that the shares to be acquired upon the exercise are to be acquired for investment and not for resale or with a view to the distribution thereof. Upon demand, delivery of the representation prior to the delivery of any shares to be issued upon exercise of an Option and prior to the expiration of the Option period shall be a condition precedent to the right of the Optionee or other person to purchase any shares. (i) ADJUSTMENTS. In the event of any change in the Common Stock of the Corporation by reason of any stock dividend, recapitalization, reorganization, merger, consolidation, split-up, combination, or exchange of shares, or rights offering to purchase Common Stock at a price substantially below fair market value, or any similar change affecting the Common Stock, the number and kind of shares which thereafter may be optioned and sold under the Plan and the number and kind of shares subject to option in outstanding Option agreements and the purchase price per share thereof shall be appropriately adjusted consistent with the change in a manner as the Committee may deem equitable to prevent substantial dilution or enlargement of the rights granted to, or available for, participants in the Plan. (j) INCENTIVE STOCK OPTIONS. Each Option agreement which provides for the grant of an Incentive Stock Option to an employee shall contain terms and provisions as the Committee may determine to be necessary or desirable in order to qualify the Option as an Incentive Stock Option within the meaning of Code Section 422, or successor thereto and to meet the requirement of Rule 16b-3. (k) NO RIGHTS AS SHAREHOLDERS. No Optionee shall have any rights as a shareholder with respect to any shares subject to an Option prior to the date of issuance to the Optionee of a certificate or certificates for the shares. (l) NO RIGHTS TO CONTINUED EMPLOYMENT. The Plan and any Option granted under the Plan shall not confer upon any Optionee any right with respect to continuance of employment by the Corporation or any subsidiary of the Corporation, nor shall they interfere in any way with the right of the Corporation to terminate the Optionee's employment at any time. 7. COMPLIANCE WITH OTHER LAWS AND REGULATIONS The Plan, the grant and exercise of Options thereunder, and the obligation of the Corporation to sell and deliver shares under Options, shall be subject to all applicable Federal and state laws, rules and regulations and to required approvals of any government or regulatory agency. The Corporation shall not be required to issue or deliver any certificates for shares of Common Stock prior to the completion of any registration or qualification of the shares under any Federal or state law, or any ruling or regulation of any government body which the Corporation shall, in its sole discretion, determine to be necessary or advisable. 8. AMENDMENT AND DISCONTINUANCE The Board of Directors of the Corporation may from time to time amend, suspend or discontinue the Plan; provided, however, that subject to the provisions of paragraph 6(i) or the approval of the Corporation's shareholders no action of the Board of Directors or of the Committee may: (a) extend the period during which Options may be granted as provided in paragraph 4(c); (b) increase the number of shares reserved for Options pursuant to Section 4; (c) permit the granting of any Option at an Option price less than that determined in accordance with paragraph 6(b); (d) permit the granting of Options which expire beyond the period provided for in paragraph 6(a); (e) materially increase the benefits accruing to participants in the Plan; (f) materially modify the requirements for eligibility for participation in the Plan; or (g) otherwise cause Rule 16b-3 or the requirements for Incentive Stock Options to become inapplicable. Without the written consent of an Optionee, no amendment or suspension of the Plan shall diminish or impair any Option previously granted to the Optionee under the Plan. Notwithstanding any other provision of the Plan, if an amendment to the Plan requires the approval of the Corporation's shareholders, every Option granted after that amendment and before approval of the shareholders (and the Optionee's or other person's rights in every share issued upon an exercise of an Option granted during that time) shall be conditional and contingent upon the approval of the Corporation's shareholders. Further, those Options (and shares issued under those options) shall not be subject to sale or transfer unless and until shareholder approval is obtained. The Committee shall implement procedures for compliance with these restrictions when applicable.


Mylan Laboratories Inc. 2000 Annual Report

Building a Stronger Mylan

Description of Business

- ------------------------
Mylan  Laboratories  Inc.  is a  diversied  pharmaceutical  company  with a core
generic   business,   a  growing  branded  presence  and  varied  drug  delivery
capabilities.  Our product portfolio consists of numerous  prescription  generic
and proprietary nished pharmaceutical,  wound care and dermatological  products.
These products include solid oral dosage forms, as well as suspensions, liquids,
injectables,   transdermals  and  topicals,   many  of  which  are  packaged  in
specialized systems.

Milan Puskar

Chairman and Chief Executive Officer

Letter To Shareholders

- -----------------------
Mylan Laboratories Inc.

It's about having the right tools and the right blueprint.

Dear Shareholder,

     In 1998, I set an aggressive  financial  target for net sales of $1 billion
by March 2001 with a 35% contribution  from our brand product  division,  Bertek
Pharmaceuticals.  At that time, the brand business  represented 11% of net sales
and 14% gross margin  contribution.  I am pleased to report that as of the close
of fiscal 2000, Mylan reported net sales of $790 million and record net earnings
of $154 million with 15% net sales and 19% gross  margin  contribution  from our
brand products.

     Total brand sales increased 47% to $122 million in fiscal 2000, compared to
$83 million the previous  year.  This  increase is largely  attributable  to our
acquisition of Penederm,  in fiscal 1999. In fiscal 2000,  Bertek's portfolio of
dermatology products grew to $46 million in net sales.

     Penederm has now been integrated in the Mylan family of companies and as of
August  1999,  it has become the Bertek  Pharmaceuticals  Inc.  Dermatology  R&D
division.

     Research  is the  foundation  upon which  every  pharmaceutical  company is
built.   Through  the  dedicated   professional  efforts  of  our  research  and
development  team,  Mylan  has laid the  groundwork  to  remain a leader  in the
generic  pharmaceutical  marketplace  and it is this same foundation of strength
and  expertise  upon which we intend to  aggressively  build our presence in the
brand  pharmaceutical  business to balance our portfolio and reduce our earnings
variability.

     I am confident in our ability to increase the growth in our brand division.
However,  the  development  curve  of  achieving  a 35%  brand  and 65%  generic
contribution may take longer than we had originally  anticipated.  Presently, we
are conducting a complete  strategic review whereby we can identify any weakness
and take the necessary steps to further implement our brand strategy.

     We  have  been  aggressively  exploring  opportunities  to grow  the  brand
division in three specific therapeutic categories:  dermatology,  cardiology and
neurology.

     We continue to proceed with our in-house research and development  projects
while also pursuing product  licensing  and/or product and company  acquisitions
for opportunities.

     This past year, Bertek signed an exclusive  marketing  agreement with Amide
Pharmaceuticals  Inc.  whereby  Amide will supply AB rated Digoxin to Bertek for
sales and marketing under the brand name  Digitektrademark.  Digitektrademark is
the  generic  equivalent  to  Glaxo  Wellcome's  LanoxinRegistration  Mark.  Our
office-based  sales force will be detailing  the product to the primary care and
institutional arena.

                                       3

Although we are committed to our brand strategy, we intend to remain a leader in the generic industry. As we enter the twenty-first century, generic pharmaceuticals will play an increasingly important role in our health care system by making safe and effective drugs more affordable for all Americans. Throughout the next five years, patents on products representing over $25 billion dollars will be expiring; and where applicable, we are well positioned to participate in these markets. We are highly focused on these opportunities and we are uniquely positioned to take advantage of the positive growth trends in the generic pharmaceutical industry. We intend to leverage our traditional strengths, which are development, manufacturing and distribution to take advantage of these opportunities. The brand pharmaceutical companies use drug delivery technology as a means of extending patent life and differentiating their products and thereby increasing market share. Mylan development has been successful in achieving various forms of extended-release technology. We have made a commitment to complex drug formulation and technology and we have the manufacturing capabilities for these sophisticated dosage forms. Some examples that were introduced this past year include Extended Phenytoin Sodium Capsules, Verapamil HCl ER Capsules, Carbidopa and Levodopa ER Tablets and the Estradiol Transdermal System. We are investing more than ever to accelerate the flow of new products into our pipeline, which was evident in our strong generic approval record in fiscal 2000. We received final or tentative approval for 23 Abbreviated New Drug Applications (ANDAs) and two supplemental ANDAs for additional product strengths. These 25 approvals encompass 21 different products or chemical entities. In addition to our in-house product development, we also added five products to our generic portfolio via strategic alliances with other pharmaceutical companies. Mylan's alliance with Pfizer Inc. is indicative of the importance of planning, timing and opportunity. This agreement enabled Mylan to receive all three dosage strengths of Nifedipine, generic ProcardiaRegistration Mark XL, from Pfizer for entry into the market. Mylan now sells all three strengths in the generic market and the consumer benefits from a lower cost, drug alternative. 4

At the close of our fiscal year, Mylan Pharmaceuticals, the generic division, was marketing 115 products in over 410 sizes and/or dosage strengths to wholesalers, pharmacies, HMO's and national accounts throughout the U.S. Presently, we have approximately 24 ANDAs filed awaiting FDA approval and we have targeted an additional 20 products to be filed with the agency this fiscal year. Throughout this past year, we have seen many mergers in the generic pharmaceutical industry. We expect there will be others. Despite the changing landscape in our industry, the generic division of Mylan continues to maintain its leadership position. Our new product introductions, 10% increase in unit volume, and prior pricing increases have all contributed to the growth of our generic segment. Two products for which Mylan increased prices, Lorazepam and Clorazepate, were a catalyst for an investigation by the Federal Trade Commission (FTC). Mylan has devoted significant resources over the past year to vigorously defending the unprecedented lawsuit brought by the FTC in December 1998 and related suits. Several of the related suits were dismissed during the past year. Additional motions are pending. We continue, along with our attorneys, to concentrate our efforts in developing further support for our defenses. Mylan has taken testimony from many industry participants and state agencies. Thousands of documents have been collected and scrutinized. We believe we are well positioned going into the next stages of the litigation - expert discovery and summary judgment. We face challenges unrelated to developing and manufacturing quality pharmaceutical products. Poorly conceived statutory and regulatory policies of federal and state governments create barriers to market entry for generic medicines and restrict consumer access to our more affordable products. The policies result from a comprehensive strategy by multinational drug companies to protect their monopolies by ensuring market exclusivity for products even after their patents have expired. Efforts to unfairly extend patents, restrict formularies to preclude generic medications, challenge generic safety and efficacy with bogus claims, and litigate against generic manufacturers to delay market entry by approved generic products are just a few of the tactics employed by these multi-national drug giants. Mylan has committed to its shareholders and customers that we will also vigorously compete in the statutory and regulatory arenas to defend the principles of an open and competitive marketplace, and to ensure that consumer access to affordable medicine is protected. 5

To keep that commitment, we have made important investments in programs to ensure that elected officials understand the impact of policies that restrict consumer access to generic medicines. I am pleased to report to you that we are making significant progress in our battle to preserve and protect fair and open competitive markets for generic medicines. In fact, Mylan has significantly improved the perceptions of federal and state policy makers of the importance of a strengthened generic pharmaceutical industry. As a result, there is increasing awareness that government policies aimed at helping generic drug manufacturers ultimately benefit consumers. There also is growing appreciation for the fact that our industry is exceptionally price competitive, in stark contrast to the market of the multinational drug company monopolies. Mylan is also committed to working with consumer groups across America to ensure that they are armed with facts about the economic and health benefits of generic medicine. Our network is expanding, providing a louder voice for the generic industry before federal and state policy makers. We will continue our commitment to make sure that members of Congress, state legislators, regulators, the media, and consumers join our crusade for a stronger, more robust pharmaceutical market where generic drugs can play a bigger role as the best solution to contain runaway prescription drug costs. (picture) Richard F. Moldin President and Chief Operating Officer (picture) Douglas J. Leech Director 6

On March 24, 2000, I announced the appointment of Richard F. Moldin as our new President and Chief Operating Officer. Richard knows the business, he knows the issues and he knows a lot of people in our industry. He is respected as a businessman and leader and has been involved in the pharmaceutical field since 1971. I feel Richard is the right person at the right time, and we are very pleased that he has joined the Mylan team. During this past year, Mylan also experienced a change to the Board of Directors. Robert Smiley, a Director since 1972, decided to step aside effective December 31, 1999. Bob's long years of service have been a great asset to Mylan. He has been conscientious and diligent in carrying out his duties as a Director with his ultimate concern always being this company and its shareholders. We will miss his expertise and his candor, but we are very pleased that Bob will continue to serve Mylan as Corporate Secretary. Douglas J. Leech comes to the board with 25 years of experience in public accounting and banking to fill the void created by Bob's resignation. Currently, Douglas is Chairman, President and CEO of Centra Bank, Inc. of Morgantown, West Virginia. His financial expertise makes him a perfect candidate to serve as Chairman of the Audit Committee of the Board of Directors. We are very pleased that Douglas has agreed to become a member of the Mylan board. I believe we have what it takes to build a stronger Mylan: - We have the foundation - our exceptional research and development program, - The right blueprints - our strategy of continued generic leadership and expanded brand growth, - The right tools - our operational expertise and unsurpassed quality, - The right resources - our dedicated team of employees that now exceeds 2,300 talented men and women. I am extremely proud of the Mylan team whose hard work assures the continued growth and success of Mylan and I thank them for their efforts. I would also like to thank you, our shareholders. This year was difficult. We also believe the future will be difficult but we remain positioned for success in the ever-changing environment in which we operate. Thank you for your continued support. Milan Puskar Chairman and Chief Executive Officer 7

Mylan Pharmaceuticals Inc. Generic Product Line Generic Name Trade Name ------------ --------------- Ace Inhibitor (UDL) Captopril Capoten® Adrenal Cortical Steroid * Prednisolone Syrup Prelone® Syrup Analgesic Propoxyphene Compound Darvon® Compound-65 Propoxyphene HCl Darvon® (UDL) Propoxyphene HCl and Acetaminophen Wygesic® (UDL) Propoxyphene Napsylate and Acetaminophen Darvocet-N® 100 Anti-Inflammatory * Diclofenac Potassium Cataflam® Etodolac (Capsules) Lodine® Etodolac (Tablets) Lodine® (UDL) Fenoprofen Calcium Nalfon® (UDL) Flurbiprofen Ansaid® Ibuprofen Motrin® Rufen® (UDL) Indomethacin Indocin® Ketoprofen Orudis® Ketorolac Tromethamine Toradol® Meclofenamate Sodium Meclomen® (UDL) Naproxen Naprosyn® Naproxen Sodium Anaprox® (UDL) Piroxicam Feldene® (UDL) Sulindac Clinoril® Tolmetin Sodium (Capsules) Tolectin® DS Tolmetin Sodium (Tablets) Tolectin® 600 Antiangina Nitroglycerin Transdermal System (Patches) Transderm Nitro® (UDL) Verapamil HCl Isoptin® Antianxiety (UDL) Alprazolam Xanax® Clorazepate Dipotassium Tranxene® (UDL) Diazepam Valium® (UDL) Lorazepam Ativan® Antibiotic Cefaclor (Capsules) Ceclor® Cefaclor (Powders) Ceclor® Cephalexin Keflex® (UDL) Doxycycline Hyclate (Capsules) Vibramycin® (UDL) Doxycycline Hyclate (Tablets) Vibra-Tabs® Erythromycin Ethylsuccinate E.E.S. 400® Erythromycin Stearate Erythrocin® Stearate Tetracycline HCl Achromycin V® Sumycin® Anticonvulsant (UDL) Clonazepam Klonopin® (UDL) Extended Phenytoin Sodium Dilantin® Kapseals® Antidepressant (UDL) Amitriptyline HCl Elavil® Chlordiazepoxide and Amitriptyline HCl Limbitrol® Clomipramine HCl Anafranil® (UDL) Doxepin HCl Sinequan® Maprotiline HCl Ludiomil® (UDL) Nortriptyline HCl Pamelor® Perphenazine and Amitriptyline HCl Triavil® Antidiabetic (UDL) Chlorpropamide Diabinese® (UDL) Glipizide Glucotrol® * Glyburide Glynase® Pres-Tab® Tolazamide Tolinase® (UDL) Tolbutamide Orinase® Antidiarrheal (UDL) Diphenoxylate HCl and Atropine Sulfate Lomotil® (UDL) Loperamide HCl Imodium® Antiemetic (UDL) Prochlorperazine Maleate Compazine® Antifungal * Ketoconazole Nizoral® Antigout (UDL) Allopurinol Zyloprim® Probenecid Benemid® Antihypertensive (UDL) Amiloride HCl and Hydrochlorothiazide Moduretic® Atenolol and Chlorthalidone Tenoretic® Captopril and Hydrochlorothiazide Capozide® (UDL) Clonidine HCl Catapres® Guanfacine Tenex® (UDL) Methyldopa Aldomet® Methyldopa and Hydrochlorothiazide Aldoril® (UDL) Prazosin HCl Minipress® Propranolol HCl and Hydrochlorothiazide Inderide® (UDL) Spironolactone and Hydrochlorothiazide Aldactazide® 8

(UDL) Triamterene and Hydrochlorothiazide (Capsules) Dyazide® (UDL) Triamterene and Hydrochlorothiazide (Tablets) Maxzide®-25MG Maxzide® * Terazosin HCl Hytrin® Antihyperlipidemic Gemfibrozil Lopid® Antimalarial Hydroxychloroquine Sulfate Plaquenil® Antineoplastic (UDL) Methotrexate Methotrexate® Rheumatrex® Antiparkinson (UDL)* Carbidopa and Levodopa ER Sinemet® CR Antipsychotic (UDL)* Clozapine Clozaril® Fluphenazine HCl Prolixin® Haloperidol Haldol® (UDL) Thioridazine HCl Mellaril® (UDL) Thiothixene Navane® (UDL) Trifluoperazine HCl Stelazine® Antiviral Acyclovir (Capsules) Zovirax® Acyclovir (Tablets) Zovirax® Beta Blocker Acebutolol HCl Sectral® (UDL)* Atenolol Tenormin® (UDL) Metoprolol Tartrate Lopressor® Pindolol Visken® (UDL) Nadolol Corgard® (UDL) Propranolol HCl Inderal® Timolol Maleate Blocadren® Bronchodilator (UDL)* Albuterol Proventil® Ventolin® (UDL) Albuterol Sulfate Syrup Ventolin® Syrup Calcium Channel Blocker (UDL) Diltiazem HCl Cardizem® (UDL) Diltiazem HCl ER Cardizem SR® (UDL) Diltiazem HCl ER Dilacor XR® Nicardipine Cardene® * Nifedipine ER Procardia® XL (UDL) Verapamil HCl ER (Tablets) Isoptin® SR (UDL)* Verapamil HCl ER (Capsules) Verelan® Diuretic Bumetanide Bumex® (UDL) Chlorothiazide Diuril® (UDL) Chlorthalidone Hygroton® * Hydrochlorothiazide Microzide® (UDL) Furosemide Lasix® (UDL) Indapamide Lozol® Methyclothiazide Enduron® (UDL) Spironolactone Aldactone® Estrogen Replacement * Estradiol Estrace® * Estradiol Transdermal System Climara® * Estropipate Ogen® Gastrointestinal Antispadmodic (UDL)* Dicyclomine HCl Bentyl® Hemorrheologic Agent (UDL) Pentoxifylline ER Trental® Histamine H2 Antagonist (UDL) Cimetidine Tagamet® Ranitidine Zantac® Hypnotic Agent (UDL) Flurazepam HCl Dalmane® (UDL) Temazepam Restoril® Immunosuppresive * Azathioprine Imuran® Laxative (UDL) Lactulose Solution Chronulac® Skeletal Muscle Relaxant (UDL) Cyclobenzaprine HCl Flexeril® Orphenadrine Citrate ER Norflex TM Orphenadrine Citrate, Aspirin and Caffeine Norgesic TM NorgesicTM Forte Urinary Anti-infective (UDL) Nitrofurantoin Macrodantin® Unit-dose packaging is available Select products are available in convenient unit-dose packaging from UDL Laboratories, Inc., a division of Mylan Laboratories Inc. UDL Laboratories is a national manufacturer, repackager and marketer of multisource and single-source pharmaceutical products in unit-dose form for the institutional health care marketplace. The Mylan products available in unit-dose are identified with a UDL logo (UDL) adjacent to the product listing. *Indicates fiscal 2000 introduction 9

Bertek Pharmaceuticals Inc. Brand Product Line Dermatology Bertek Pharmaceuticals Inc. provides dermatologic products targeted to the treatment of acne vulgaris and for the topical treatment of fungal infections. Acticin® is a topical scabicidal agent for the treatment of infestation with Sarcoptes scabiei (scabies). It offers proven permethrin safety and efficacy in a smooth formula that makes it easy to apply. It also offers a cost savings. Treatment with permethrin cream may lead to generally mild and transient burning and stinging, and pruritus following application, and may exacerbate conditions such as pruritus, edema, and erythema associated with scabies. Avita® Cream and Gel are members of the new generation of retinoid products indicated for the treatment of acne vulgaris. Avita is uniquely formulated using the patented TopiCare delivery system, which consists of a portfolio of liquid polymers ("Polyolprepolymers") that are designed to hold skin care agents at targeted levels on and in the upper layers of the skin. These compounds have been shown to enhance delivery of a variety of skin care agents resulting in improved efficacy, longer duration of action, reduced irritation, or lower percent of cosmetic active required. Avita Cream 0.025% demonstrated a high level of efficacy in a low concentration cream. Avita Gel 0.025% is for a rapidly growing group of patients preferring gel forms of topical retinoids. It has been shown to cause low irritation. As with all topical retinoids, the skin of certain sensitive individuals may become excessively red, edematous, blistered, or crusted. Mentax® is a topical antifungal cream indicated for the treatment of interdigital tinea pedis (athlete's foot), tinea corporis (ringworm), and tinea cruris (jock itch). Mentax contains butenafine HCl, a benzylamine, the first of this new class of antifungal agents. Mentax is applied directly to the skin and is effective with once-a-day dosing, unlike many other leading topical antifungal drugs. In clinical studies with more than 1,300 patients, Mentax exhibited excellent results - high rates of cure with virtually no safety issues or side effects. During U.S. clinical trials against tinea pedis, tinea corporis and tinea cruris, no Mentax-treated patients discontinued therapy due to adverse reactions. The incidence of local adverse reactions was approximately 1%, primarily mild-to-moderate burning/stinging. Cardiovascular Bertek Pharmaceuticals Inc. offers cardiovascular care products for the treatment of hypertension, angina, and atrial fibrillation. The newest addition to our cardiovascular line is Digitek® (Digoxin Tablets, USP), the first proven, bioequivalent, cost-effective alternative to Lanoxin®* for the treatment of chronic atrial fibrillation. Digitek is supplied in 0.125mg and 0.25mg Tablets. Digitalis glycosides are contraindicated in patients with ventricular fibrillation or in patients with a known hypersensitivity to digoxin. Bertek offers Maxzide® (Triamterine/Hydrochlorothiazide) and ClorpresTM (Clonidine HCl and Chlorthalidone) diuretics for the treatment of hypertension. JNC VI recommends diuretics as primary therapy for all hypertensive patients, "..diuretics should be considered the agent of first choice in the absence of conditions that prohibit their use." Maxzide adverse reactions: drowsiness, insomnia, muscle cramps, weakness, headache, GI disturbances, dizziness, orthostatic hypotension, hyperurcemia, impotence, renal stones, tachycardia, dyspnea, dry mouth, depression, anxiety, urine discoloration and elevated liver enzymes. The most common associated reactions of Clorpres are: dry mouth, drowsiness, dizziness, sedation and constipation. Headache and fatigue have been reported. Generally these effects tend to diminish with the continued therapy. For angina patients Bertek Pharmaceuticals Inc. offers Nitrek® (Nitroglycerin Transdermal System), a small translucent patch that is almost imperceptible on any skin tone, providing reliable adhesion even while swimming, exercising, or showering Adverse reactions to nitroglycerin are generally dose-related and almost all of these reactions are the result of nitroglycerin's activity as a vasodilator. Headache, which may be severe, is the most common side effect. * Lanoxin® is a registered trademark of Glaxo Wellcome, Inc. Antibacterial Bertek Pharmaceuticals Inc. offers antibacterial products for the treatment of lower respiratory infections, burn and chronic wounds. Sulfamylon® Cream is a soft, white, nonstaining, water-miscible, topical antimicrobial cream indicated for use as adjunctive antimicrobial burn therapy for patients with second and third degree burns. Sulfamylon Cream is effective in combating P. aeruginosa, as well as other bacterial organisms. Sulfamylon resistant bacterial strains are rare, even after 30 years of use. Sulfamylon Cream has exceptional tissue and eschar penetrating characteristics. Sulfamylon for 5% Topical Solution is indicated for use as an adjunctive topical antimicrobial agent to control bacterial infection when used under moist dressings over meshed autografts on excised burn wounds. Sulfamylon Cream and 5% Topical Solution are contraindicated in patients who are hypersensitive to mafenide acetate. Mafenide acetate and its metabolite, p-carboxybenzenesulfonamide, inhibit carbonic anhydrase, which may result in metabolic acidosis, usually compensated by hyperventilation. Fatal hemolyctic anemia with disseminated intravascular coagulation, presumably related to a glucose-6-phosphate dehydrogenase deficiency, has been reported following mafenide acetate therapy. Zagam® (Sparfloxacin), the first of the aminodifluroquinilones, is indicated for the treatment of acute exacerbations of chronic bronchitis and community acquired pneumonia. Zagam is a unique fluroquinilone that offers advantages with difficult to treat patients, smokers, the elderly, alcoholics, and patients with COPD. For the difficult to treat patient, "take your best shot with the power of Zagam." The most common adverse events occurring in clinical trials were photosensitivity reactions, diarrhea, nausea, headache, dyspepsia, and dizziness. Sparfloxacin should not be used in patients with known QTc prolongation or in patients receiving QTc prolongation drugs. 11

Wound Care Bertek Pharmaceuticals Inc. is a market leader and innovator in burn and chronic wound care products. Our Institutional division markets these products to long-term care facilities, hospitals, and burn centers, in a manner that emphasizes education-oriented product promotion and overall patient care. Bertek has a longstanding commitment to listening to our customers' needs and maintaining strong, loyal partnerships with the health-care providers we serve. Biobrane® (sheet dressings and gloves) are biosynthetic wound dressings constructed of a silicon film with a nylon fabric partially imbedded into the film. The fabric presents to the wound bed a complex 3-D structure of trifilament thread to which collagen has been chemically bound. Blood/sera clot in the nylon matrix, thereby firmly adhering the dressing to the wound until epithelialization occurs. If in the rare instance a patient shows evidence of an allergic reaction to the product, it should be removed and its use discontinued. Biobrane®-L is a dressing with a less complex nylon fabric structure for use when less aggressive adherence is required. The lower weight monofilament thread utilized in Biobrane-L presents a shallow, less complex matrix to the wound bed, thereby reducing the degree of clot integration and adherence. If in the rare instance a patient shows evidence of an allergic reaction to the product, it should be removed and its use discontinued. Flexzan® is a sterile, ultra-thin, highly conformable, semi-occlusive polyurethane foam adhesive dressing which protects wounds from contamination and trauma while maintaining a moist wound healing environment. It is constructed of an open cell foam with a closed cell outer surface. Excess wound moisture is absorbed into the cells of the foam and allowed to evaporate through the outer surface, helping prevent fluid accumulation under the dressing. Flexzan should not be used on third degree burns or on wounds showing clinical signs of infection. Flexzan® Extra is light tan in color with the patterned adhesive optimized to adhere to very moist skin surfaces. Flexderm® is a sterile hydrogel polymer sheet dressing which protects a wound against dehydration and exogenous contamination while providing a moist environment conducive to optimal wound healing. Flexderm absorbs exudate from the wound while providing cooling, pain relieving protection and does not adhere to the wound bed upon removal. Granulex® is an aerosol topical wound spray used as an aid in the management of pressure ulcers. Topical application stimulates the capillary beds of chronic wounds and helps prevent the deterioration of Stage I ulcers into deeper stages. Granulex also helps promote tissue granulation in deeper chronic ulcers (Stage II, III, IV), and contains trypsin, a mild debriding agent which helps keep the wound site free of necrotic tissue once debrided. Granulex should not be sprayed on fresh arterial clots or in the eyes. Hydrocol® is a sterile, occlusive hydrocolloid wound dressing which interacts with wound exudate to absorb excess drainage yet is able to be removed without damaging newly formed tissue. The dressing protects the wound from bacteria, urine and feces, and other exogenous contamination. A unique design, tapered borders, rounded corners, and a low-friction film backing help prevent edge roll-up and extend dressing wear time. Hydrocol is not indicated for use on third degree burns or on individuals with known sensi tivity to the dressing or its components. Proderm® is a non-prescription topical wound spray which stimulates the capillary beds of pressure ulcers to help prevent the deterioration of Stage I ulcers to deeper stages. Proderm also helps promote tissue granulation in deeper chronic ulcers. Avoid spraying in eyes or nostrils. Sorbsan® is a unique calcium alginate dressing which, via ion exchange, transforms into a highly absorbent, readily conformable, easy-to-use hydrophilic sodium alginate gel when in contact with sodium-rich wound exudate. Indicated for use on all infected or non-infected wet wounds, Sorbsan is virtually painless upon application and removal, and is easily changed by medical professionals and patients alike. Sorbsan is not intended to be surgically implanted or used on third degree burns. 12

Contents 14 Selected Financial Data 15 Management's Discussion and Analysis of Operations and Financial Position 22 Consolidated Balance Sheets 24 Consolidated Statements of Earnings 25 Consolidated Statements of Shareholders' Equity 26 Consolidated Statements of Cash Flows 28 Notes to Consolidated Financial Statements 40 Independent Auditors' Report 41 Market Information 42 Shareholder Information 13

Selected Financial Data Mylan Laboratories Inc. Year ended March 31, ............. 2000 1999 1998 1997 1996 1995 1994 1993 Total revenues ................... $ 790,145 $ 721,123 $ 555,423 $ 440,192 $ 392,860 $ 396,120 $ 251,773 $ 211,964 Net earnings ..................... $ 154,246 $ 115,409 $ 100,777 $ 63,127 $ 102,325 $ 120,869 $ 73,067 $ 70,621 Earnings per common share-basic .. $ 1.19 $ .92 $ .83 $ .52 $ .86 $ 1.02 $ .62 $ .61 Earnings per common share-diluted $ 1.18 $ .91 $ .82 $ .51 $ .85 $ 1.01 $ .61 $ .60 Shares used in computation-basic . 129,220 125,584 122,094 121,926 119,530 118,963 118,423 115,651 Shares used in computation-diluted 130,224 127,156 123,043 122,727 120,706 119,912 119,502 116,986 March 31, Working capital .................. $ 598,976 $ 475,398 $ 379,726 $ 323,942 $ 351,536 $ 296,990 $ 197,164 $ 159,748 Total assets ..................... $1,341,230 $1,206,661 $ 847,753 $ 777,580 $ 692,009 $ 546,201 $ 403,325 $ 351,105 Long-term obligations ............ $ 30,630 $ 26,827 $ 26,218 $ 32,593 $ 18,002 $ 7,122 $ 4,609 $ 5,125 Shareholders' equity ............. $1,203,722 $1,059,905 $ 744,465 $ 659,740 $ 616,441 $ 482,728 $ 379,969 $ 295,972 Book value per share-diluted ..... $ 9.24 $ 8.34 $ 6.05 $ 5.38 $ 5.11 $ 4.03 $ 3.18 $ 2.53 Amounts in thousands except per share data. From April 1, 1992, through July 1992, the Company had a quarterly dividend program totaling $.067 per share per year. From October 1992 to July 1993, the Company had a quarterly dividend program totaling $.08 per share per year. From October 1993 to July 1994, the Company had a quarterly dividend program totaling $.107 per share per year. From October 1994 to July 1995, the Company had a quarterly dividend program totaling $.133 per share per year. Since October 1995, the Company has had a quarterly dividend program totaling $.16 per share per year. In addition, the Company paid a special one-time dividend of $.067 per share on January 13, 1995. The above financial data gives retroactive effect to the three-for-two stock split effective August 15, 1995. 14

Management's Discussion and Analysis of Operations and Financial Position Mylan Laboratories Inc. Overview Mylan Laboratories Inc. (the "Company") posted record net earnings of $154.2 million for the year ended March 31, 2000, compared to $115.4 million in fiscal 1999 and $100.8 million in fiscal 1998. Net earnings for fiscal 1999 were reduced by $29.0 million as a result of a one-time charge for acquired in-process research and development. The favorable earnings trend realized over the past three years is a result of strategic initiatives undertaken by the Company. The Company set out to accelerate the expansion of its branded operations. While continuing in-house research and development projects, additional expansion would be obtained through product acquisitions, with the acquisition of Penederm and its dermatology product line in October 1998 being the most significant acquisition to date. The branded segment now represents 15% of the Company's net sales compared to 10% in fiscal 1998 and contributes 19% of the Company's gross margin compared to 14% just two years ago. The Company continues to examine additional opportunities to expand the branded segment. The existing product line alone will not be sufficient to provide continued annual sales growth comparable to that which was realized in the past two years. However, the newly expanded sales force provides a solid foundation capable of growing current market share and launching new innovative health care products and product line extensions. The generic segment continues to maintain its leadership role within the industry. The 17 new product additions and prior pricing increases, as well as a 10% unit volume increase, were the primary causes for growth in fiscal 2000 and were the result of strategic initiatives taken in previous years. The Company expanded its ability to bring new products to market through strategic alliances with other pharmaceutical companies. Five of the new products added in fiscal 2000 were the result of such alliances. The Company also determined, after extensive evaluation, that changes were necessary in its generic pricing practices; therefore, a series of price increases was implemented. Clorazepate and lorazepam were among 29 products for which the Company raised prices beginning in late fiscal 1998 and continuing throughout fiscal 1999. The increases on these two specific products were a catalyst for an investigation by the Federal Trade Commission ("FTC") which led to a suit filed in December 1998 (See note S to the consolidated financial statements). Despite record financial results, obstacles continuing to challenge the generic segment include consumer acceptance of generic substitutes and price deterioration. In fiscal 2000, the Company estimates that price deterioration reduced net earnings by approximately $56.1 million with more than half attributable to two products, clorazepate and lorazepam. Patent litigation by branded pharmaceutical companies and an increasingly difficult regulatory environment present additional challenges in the generic industry. 15

Results of Operations Net Sales and Gross Margin The following table outlines net sales, gross margin (net sales less cost of sales), gross margin as a percentage of net sales and the corresponding change from the previous year: (dollars in millions) Percent Change Year ended March 31, 2000 1999 1998 2000 1999 Generic Segment: Net sales ...... $ 667.8 $ 638.1 $ 474.5 5% 34% Gross margin ... 345.3 329.5 207.5 5% 59% % of net sales . 52% 52% 44% Branded Segment: Net sales ...... $ 122.3 $ 83.0 $ 54.1 47% 53% Gross margin ... 83.0 54.8 32.8 51% 67% % of net sales . 68% 66% 61% Company Totals: Net sales ...... $ 790.1 $ 721.1 $ 528.6 10% 36% Gross margin ... 428.3 384.3 240.3 11% 60% % of net sales . 54% 53% 45% With regards to the Company's generic product line, 13 products were added in fiscal 1998 accounting for $61.5 million in net sales in fiscal 1998 and nine products were added in fiscal 1999 with aggregate net sales of $37.1 million in fiscal 1999. In fiscal 2000, the Company added 17 new products which resulted in aggregate net sales of $42.6 million. Five of the 17 new products added in fiscal 2000 accounted for over 90% of the aggregate net sales for new products. In fiscal 2000, five of the products added resulted from strategic alliances with other pharmaceutical companies. Due to royalty arrangements, these products typically have lower gross margin percentages than products developed internally and manufactured by the Company. For both fiscal 1999 and 1998, two of the new products added were the result of strategic alliances. During the second half of fiscal 1998, the Company raised prices on seven generic products. Throughout fiscal 1999, the Company raised prices on 22 additional products. These selective price increases increased net sales by $47 million and gross margin by $37 million in fiscal 1998 and increased net sales by $130 million and gross margin by $109 million in fiscal 1999. Two of the 29 products, clorazepate and lorazepam accounted for $49 million of net sales in fiscal 1998 and $151 million in net sales in fiscal 1999. Despite a marginal increase in volume for these two products in fiscal 2000, net sales dropped to $104 million as a result of price deterioration. The remaining 27 products resulted in increased net sales of $39 million and gross margin of $34 million in fiscal 2000. In addition to the items previously mentioned, the Company estimates that price deterioration in the generic industry resulted in reductions in net sales and gross margin of approximately $32 million in fiscal 1998, $39 million in fiscal 1999 and $41 million in fiscal 2000. Such reductions were substantially offset by increased volume, favorable mix variances and production efficiencies which generally result from higher volumes. Total unit volume of generic product shipments, excluding unit dose shipments, was 7.3 billion in 1998, 8.0 billion in 1999 and 8.8 billion in fiscal 2000. 16

The Company expects significant price deterioration on clorazepate and lorazepam during fiscal 2001. The Company also expects increases in the cost of raw materials for these products. Accordingly, net sales and gross margin for these products in the fiscal year ending March 31, 2001, are expected to be less than that recognized by the Company in fiscal 2000. Net sales for the Company's branded segment increased 47% in fiscal 2000 and 53% in fiscal 1999. The primary reason for the significant increases in each of the last two years was the acquisition of Penederm in October 1998. The acquisition of Penederm expanded the Company's branded presence in one of its targeted markets, dermatology. Dermatology products accounted for approximately 38% of net sales for the branded segment in fiscal 2000. As the Company has made a concerted effort to expand its branded segment in fiscal 2000 and 1999, the emphasis within the branded segment continues to shift from wound care products to dermatology and other physician-based products. Wound care products represented less than 8% of branded net sales in fiscal 2000 compared to 15% in the prior year. The accounts receivable balance of the Company increased as of March 3 1, 2000, as compared to March 31, 1999, due to buying patterns of its customers and the associated payments. Research and Development Research and development expenditures were $49.1 million, $61.8 million and $46.3 million in fiscal years 2000, 1999 and 1998. The following table outlines the allocation of research and development expenditures: (dollars in millions) Year ended March 31, 2000 1999 1998 Generic related projects $22.3 $25.7 $22.0 Innovative compound projects 20.5 29.2 18.4 Transdermal systems 6.3 6.9 5.9 During fiscal 1999, the Company entered into an agreement with Genpharm Inc. to develop 15 branded and generic products. The initial milestone payment in fiscal 1999 for this agreement was allocated evenly to generic and innovative compound projects. This expenditure represents the majority of the fluctuation in expenditures for generic related projects between fiscal years. In addition to the Genpharm agreement in fiscal 1999, expenditures for innovative compound projects were affected by the arbitration award in which the Company recorded approximately $10.0 million in funding obligations to VivoRx. Charges related to the Company's funding of VivoRx were $6.3 million in fiscal 1998. In addition to these items, the increase in research and development expenditures in fiscal 1999 and fiscal 2000, as compared to fiscal 1998, are principally due to the research and development expenses of Penederm, which was acquired in fiscal 1999. The Company is actively pursuing and is involved in joint development projects in an effort to broaden its scope of capabilities in bringing to market both generic and innovative products. Some of these arrangements provide for payments by the Company upon the attainment of certain milestones. While such arrangements help to reduce the Company's financial risk for unsuccessful projects, fulfillment of milestones or other payment obligations may result in fluctuations in research and development expense. Acquired In-Process Research and Development In connection with its acquisition of Penederm in October 1998, the Company allocated $29.0 million of the purchase price to in-process research and development in fiscal 1999 (See note B to the consolidated financial statements). 17

Selling and Administrative Selling and administrative expenses were $156.2 million in fiscal 2000, $125.0 million in fiscal 1999 and $96.7 million in fiscal 1998. These amounts represent 20%, 17% and 18% of net sales in fiscal years 2000, 1999 and 1998. The following table identifies the major components of selling and administrative expenses: (in millions) Year ended March 31, 2000 1999 1998 Sales and Marketing Expenses: Generic: Payroll and related $ 5.0 $ 4.9 $ 4.5 Advertising and promotions 8.8 12.7 16.3 Branded: Payroll and related 19.1 12.8 9.4 Advertising and promotions 19.4 9.2 4.7 Other sales and marketing 12.1 9.9 8.4 Total Sales and Marketing Expenses $64.4 $49.5 $43.3 Administrative Expenses: Payroll and related $30.7 $27.5 $21.9 Legal and professional fees 31.2 22.2 12.0 Goodwill amortization 6.4 4.0 1.6 Other administrative 23.5 21.8 17.9 Total Administrative Expenses $91.8 $75.5 $53.4 Generic advertising and promotions, which for the most part represent the cost of stocking fees to customers to assist in the conversion and promotion of new generic products, decreased from fiscal 1998 to fiscal 1999 and again in the current year as such costs relate to the launch of specific products. Promotional costs associated with products launched in fiscal 2000 were not significant. The increase in branded sales and marketing expenses from fiscal 1999 to 2000 primarily relates to a full year of expenses for Penederm compared to only six months of expenses that were recorded in fiscal 1999. In addition, branded payroll and related expenses increased in fiscal 2000 due to the addition of direct sales representatives and customer support personnel. Branded advertising and promotions increased significantly due to promotion expenses for two dermatology products. Administrative expenses increased from fiscal 1999 to fiscal 2000 due to the additional six months of expenses for Penederm, amortization expense related to the acquisition of Penederm and increased legal and professional fees. The increase in legal and professional fees primarily relates to the FTC litigation initiated in December 1998, and was ongoing for all of fiscal 2000. The fiscal 1999 increase was also impacted by litigation associated with the Company's investment in VivoRx. Equity in Earnings of Somerset In fiscal 2000, the Company incurred a loss of $4.2 million in its investment in Somerset. Equity in earnings of Somerset was $5.5 million in fiscal 1999 and $10.3 million in fiscal 1998. The loss in the current year resulted from lower sales due to generic competition and increased research and development expenditures. Somerset continues its research and development efforts to develop alternative indications for its sole commercial product, EldeprylRegistration Mark. Unless such new indications are developed and approved for commercialization, the Company's earnings will continue to be adversely affected by Somerset's expected losses (See note E to the consolidated financial statements). 18

Other Income Other income was $24.0 million in fiscal 2000, $18.3 million in fiscal 1999 and $14.0 million in fiscal 1998. Other income was favorably impacted by increasing interest rates and significantly higher cash and investment balances throughout fiscal 2000. The Company recorded earnings on its investment in a limited partnership of $15.4 million, $19.8 million and $6.6 million in fiscal years 2000, 1999 and 1998. In addition, the Company recorded a gain of $3.9 million on the sale of an investment in fiscal 2000. Provisions to reduce the carrying value of strategic alliances and non-publicly traded companies included in Other assets totaled approximately $9.4 million, $12.5 million and $2.5 million in fiscal years 2000, 1999 and 1998. Income Taxes The effective tax rate for fiscal 2000 was 36.5% compared to 40.0% in fiscal 1999 and 32.1% in fiscal 1998. Approximately 5% of the fiscal 1999 tax rate is the result of the $29.0 million charge for acquired in-process research and development which is not deductible for tax purposes. Other factors for the increased rates in fiscal 2000 and fiscal 1999 are an increase in nondeductible amortization expense and a reduction in tax favored dividends. For fiscal 2001, the Company anticipates a slight increase in its effective tax rate due to Somerset's expected loss and marginally higher state taxes. Liquidity and Capital Resources Working capital increased from $475.4 million in fiscal 1999 to $599.0 million in fiscal 2000 and the ratio of current assets to current liabilities increased from 5.9 to 1 to 7.8 to 1 for this same time period. Net cash provided from operating activities was $119.2 million in fiscal 2000, $163.4 million in fiscal 1999 and $52.7 million in fiscal 1998. Fiscal 2000 operating activities were positively affected by net earnings, depreciation and amortization and the increase in allowances on accounts receivable. These increases were partially offset by changes in deferred taxes and the increase in accounts receivable. The Company's expenditures for property, plant and equipment was $28.8 million in fiscal 2000, $16.7 million in fiscal 1999 and $28.9 million in fiscal 1998. The funds in the current year were primarily used to complete an addition to one of its generic manufacturing facilities and to construct a sales and administrative building. Capital expenditures have been paid for with the operating funds of the Company. Capital expenditures to complete current projects along with the other planned capital projects are expected to be financed through the operating funds of the Company. Other investing activities which used cash relate to investments for product acquisitions, equity investments in privately held companies and a net increase in the purchase of investment securities. Payments on long-term obligations primarily relate to installment payments made on certain product acquisitions. The Company paid cash dividends of $.16 per share in fiscal years 2000, 1999 and 1998 which totaled $60.0 million. The Company is involved in litigation with the FTC and various parties with related suits. While the Company believes that it has meritorious defenses to the claims in these matters, an adverse result in these suits could have a material adverse effect on the liquidity and capital resources of the Company (See note S to the consolidated financial statements). The Company's current cash position may not necessarily be indicative of its position in future periods. As described in both the "Overview" and "Results of Operations," the Company has experienced price deterioration on certain generic products on which it increased prices and anticipates that it will experience further price deterioration on these and other products in the future. In addition, the Company continues to incur significant legal fees and costs defending against various lawsuits which will also impact future cash flows (See "Forward Looking Statements" for additional information concerning future periods). 19

Year 2000 The Company to date has not experienced any major disruptions related to the Year 2000 date change. The Company will continue to monitor critical systems, along with those of its customers and suppliers, to ensure uninterrupted operations. The direct incremental cost of Year 2000 remediation was insignificant to the Company's operations. Other Matters In June 1998, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards ("SFAS") No.133, "Accounting for Derivative Instruments and Hedging Activities." SFAS No.133 establishes accounting and reporting standards for derivative instruments, including certain derivatives embedded in other contracts, and hedging activities. It requires that an entity recognize all derivatives as either assets or liabilities on the balance sheet at fair value. As amended, this statement is effective for fiscal years beginning after June 15, 2000. The Company is currently evaluating the impact that SFAS No. 13 3 will have on its financial position and its results of operations. Market Risk The Company is exposed to market risk primarily from changes in market values on its investments in marketable debt and equity securities, including marketable securities owned indirectly through certain pooled asset funds. Market prices on debt securities generally bear an inverse relationship with changes in interest rates. The Company also invests in overnight deposits and money market funds and marketable securities with maturities of less than three months. These instruments are classified as cash equivalents for financial reporting purposes and have minimal or no interest rate risk due to their short term nature. The Company also invests in nonpublic securities, often in consideration of its strategic interests. The Company does not consider these investments to be market risk sensitive. The Company attempts to mitigate its exposure to market risk by assessing the relative proportion of its investments in cash and cash equivalents and the relatively stable and risk minimized returns available on such investments withthe risks attendant to its investments in other debt and equity securities. The Company's objective in managing its exposure to changes in the market value of its investments in debt and equity securities is to balance the risk of the impact of such changes on earnings and cash flows with the Company's expectations for investment returns. The Company's pooled asset funds and certain of its other investments in debt and equity securities are managed by professional portfolio managers. The Company was not a party to any forward or derivative option contract related to interest rates or equity security prices during fiscal 2000. The fair market value of the debt securities held by the Company at March 31, 2000, was $80.9 million, of which $59.3 million had maturities of less than one year (the market values of which are generally less sensitive to interest rate fluctuations than is the case with longer term debt instruments). The fair market value of equity securities held by the Company at March 31, 2000, was $71.8 million. Such investments collectively represent 11% of the Company's total assets as of March 31, 2000, and 42% of the aggregate value of debt and equity securities and cash and cash equivalents held by the Company at such date. Assuming an instantaneous 10% decrease in the market value of the Company's debt and equity securities, the change in the aggregate fair market value of these securities would be $15.3 million. Forward Looking Statements Various statements in this Report state or suggest that the Company expects to increase revenues and to continue to be profitable in the future by employing various strategies which include continuing to seek, among other things, to introduce new lines of generic equivalent products, to enter into alliances with other manufactures, to strengthen the development of branded products and to increase prices on select generic equivalent products in its line. These are forward-looking statements. The Company's actual results could differ materially from those projected or suggested in any forward-looking statement due to various important factors, including, but not limited to, the following: 20

Although the Company is expanding its presence in the branded segment of the pharmaceutical market, its results of operations have historically depended, and continue to depend, to a significant extent, on its ability to develop and bring to the market new generic equivalent products. Generally, following the expiration of patents and other market exclusivity periods, the first manufacturers to bring a generic equivalent to the market achieve higher revenues and gross profits than competitors that subsequently enter the market. As competing products enter the market, prices, sales volume and profit margins of the first generic equivalents decline significantly. Furthermore, in recent years, the Company has increased prices on selected older generic equivalent products, including in some cases generic equivalents that had been largely abandoned by competitors. These price increases have provided incentive to other generic manufacturers to reenter the market for many of these products. This additional competition has resulted in significant price deterioration on many of these products, which has negatively impacted the Company's revenues and margins. Additional price deterioration can be expected on these products in the future (See "Results of OperationsNNet Sales and Gross Margin"). In addition to suffering price deterioration on its generic equivalent products generally, the Company's results of operation for fiscal 2000 continued to be impacted by delays in its ability to introduce new generic equivalent products due to litigation initiated by branded manufacturers under the Hatch-Waxman Act to extend the exclusivity periods on drugs on which patents were expiring. The failure of Congress or the courts to address the present abuses of the Hatch-Waxman Act could diminish the commercial success of new products introduced by the Company, resulting in both lower revenues and gross margins. The Company is seeking to strengthen its development of branded products. Obtaining approval from the FDA to market new (branded) pharmaceutical products in the United States is a lengthy, complex and expensive process. Products that appear to be promising in the research laboratories may fail to survive the testing phase due to ineffectiveness or as a result of unforeseen side effects. Even if the Company is successful in obtaining approval for new products, no assurance can be given that such products will be accepted in the medical community as being as effective as alternative forms of treatment for indicated conditions. The Company's principal customers include wholesale drug distributors and major drug store chains. A continuation of the consolidation that has been experienced in these pharmaceutical distribution networks in recent years is likely to result in an increase in pricing pressures on pharmaceutical manufacturers. The Company is involved in numerous lawsuits, including anti-trust and anti-competition litigation brought by the Federal Trade Commission and the attorneys general for 33 states, as well as more than 25 putative class action lawsuits alleging the same conduct. An unfavorable outcome in these suits could have a potentially adverse effect on the Company's financial position and results of operation or, in certain circumstances, the manner in which the Company is permitted to conduct its future operations. 21

Consolidated Balance Sheets Mylan Laboratories Inc. (dollars in thousands except per share data) March 31, 2000 1999 Assets Current assets Cash and cash equivalents ..................................... $ 203,493 $ 189,849 Marketable securities ......................................... 99,557 69,872 Accounts receivable ........................................... 197,760 148,896 Inventories ................................................... 145,869 136,493 Deferred income tax benefit ................................... 30,792 18,199 Other current assets .......................................... 9,275 8,450 Total current assets .......................................... 686,746 571,759 Property, plant and equipment - net of accumulated depreciation 168,000 154,636 Intangible assets - net of accumulated amortization ........... 332,142 339,603 Other assets .................................................. 124,881 106,549 Investment in and advances to Somerset ........................ 29,461 34,114 Total assets .................................................. $1,341,230 $1,206,661 See notes to consolidated financial statements. 22

(dollars in thousands except per share data) March 31, 2000 1999 Liabilities and shareholders' equity Current liabilities Trade accounts payable $ 17,981 $ 12,142 Current portion of long-term obligations 9,874 16,941 Income taxes payable 7,858 821 Other current liabilities 46,863 61,279 Cash dividend payable 5,194 5,178 Total current liabilities 87,770 96,361 Long-term obligations 30,630 26,827 Deferred income tax liability 19,108 23,568 Shareholders' equity Preferred stock, par value $.50 per share, authorized 5,000,000 shares, issued and outstanding - none- - - Common stock, par value $.50 per share, authorized 300,000,000 shares, issued 130,277,568 at March 31, 2000 and 129,968,514 at March 31, 1999 65,139 64,984 Additional paid-in capital 316,393 311,995 Retained earnings 823,570 690,003 Accumulated other comprehensive earnings 6,936 1,105 1,212,038 1,068,087 Less treasury stock at cost - 893,498 shares at March 31, 2000 and 888,578 shares at March 31, 1999 8,316 8,182 Total shareholders' equity 1,203,722 1,059,905 Total liabilities and shareholders' equity $1,341,230 $1,206,661 23

Consolidated Statements of Earnings Mylan Laboratories Inc. (amounts in thousands except per share data) Year ended March 31, 2000 1999 1998 Net sales $ 790,145 $721,123 $528,601 Other revenues -- -- 26,822 Total revenues 790,145 721,123 555,423 Cost and expenses Cost of sales 361,818 336,846 288,290 Research and development 49,121 61,843 46,278 Acquired in-process research and development -- 29,000 -- Selling and administrative 156,247 124,964 96,708 567,186 552,653 431,276 Equity in (loss) earnings of Somerset (4,193) 5,482 10,282 Other income 23,977 18,342 13,960 Earnings before income taxes 242,743 192,294 148,389 Income taxes 88,497 76,885 47,612 Net earnings $ 154,246 $115,409 100,777 Earnings per common share Basic $ 1.19 $ .92 $ .83 Diluted $ 1.18 $ .91 $ .82 Weighted average common shares outstanding Basic 129,220 125,584 122,094 Diluted 130,224 127,156 123,043 See notes to consolidated financial statements. 24

Consolidated Statements of Shareholders' Equity Mylan Laboratories Inc. Accumulated Common Stock Treasury Stock Additional Other Total Comprehensive (dollars in thousands except -------------------- ----------------- Paid-In Retained Comprehensive Shareholders' per share data) Shares Amount Shares Amount Capital Earnings (Loss)Earnings Equity Earnings April 1, 1997 122,814,956 $ 61,407 (752,950) $ (3,732) $ 89,262 $513,750 $ (947) $659,740 -- Net earnings -- -- -- -- -- 100,777 -- 100,777 $100,777 Net unrealized gain on marketable securities -- -- -- -- -- -- 2,517 2,517 2,517 Stock options exercised 235,216 118 (513) (12) 3,143 (141) -- 3,108 -- Purchase of treasury stock -- -- (144,900) (2,459) -- -- -- (2,459) -- Reissuance of treasury stock -- -- 48,505 321 -- -- -- 321 -- Cash dividend $.16 per share -- -- -- -- (19,539) -- (19,539) -- March 31, 1998 123,050,172 61,525 (849,858) (5,882) 92,405 594,847 1,570 744,465 103,294 Net earnings -- -- -- -- -- 115,409 -- 115,409 115,409 Net unrealized loss on marketable securities -- -- -- -- -- -- (465) (465) (465) Stock options exercised 1,013,313 507 (85,270) (2,642) 16,916 (141) -- 14,640 -- Reissuance of treasury stock -- -- 46,550 342 -- -- -- 342 -- Cash dividend $.16 per share -- -- -- -- -- (20,112) -- (20,112) -- Penederm acquisition 5,905,029 2,952 -- -- 202,674 -- -- 205,626 -- March 31, 1999 129,968,514 64,984 (888,578) (8,182) 311,995 690,003 1,105 1,059,905 114,944 Net earnings -- -- -- -- -- 154,246 -- 154,246 154,246 Net unrealized gain on marketable securities -- -- -- -- -- -- 5,831 5,831 5,831 Stock options exercised 309,054 155 (4,920) (134) 4,398 -- -- 4,419 -- Cash dividend $.16 per share -- -- -- -- -- (20,679) -- (20,679) -- March 31, 2000 130,277,568 $ 65,139 (893,498) $ (8,316) $316,393 $ 823,570 $ 6,936 $1,203,722 $160,077 See notes to consolidated financial statements. 25

Consolidated Statements of Cash Flows Mylan Laboratories Inc. (dollars in thousands except supplemental disclosure) Year ended March 31, 2000 1999 1998 Cash flows from operating activities Net earnings ............................................................ $ 154,246 $115,409 $ 100,777 Adjustments to reconcile net earnings to net cash provided from operating activities: Depreciation and amortization ....................................... 35,706 26,911 21,708 Deferred income tax benefit ......................................... (23,267) (10,314) (3,207) Equity in loss (earnings) of Somerset ............................... 4,193 (5,482) (10,282) Cash received from Somerset ......................................... 460 1,089 5,674 Allowances on accounts receivable ................................... 33,628 19,300 8,754 Acquired in-process research and development ........................ -- 29,000 -- Other noncash items ................................................. 6,226 (646) 1,574 Changes in operating assets and liabilities: Accounts receivable ............................................... (82,092) (30,411) (30,565) Inventories ....................................................... (9,534) 11,328 (45,007) Trade accounts payable ............................................ 5,839 (4,282) (2,082) Income taxes ...................................................... 11,389 8,549 (8,949) Other operating assets and liabilities ............................ (17,578) 2,998 14,255 Net cash provided from operating activities ............................. 119,216 163,449 52,650 Cash flows from investing activities Additions to property, plant and equipment .............................. (28,788) (16,736) (28,853) Increase in intangible and other assets ................................. (23,779) (7,915) (7,984) Purchase of investment securities ....................................... (200,939) (79,816) (16,785) Proceeds from investment securities ..................................... 180,706 50,151 17,309 Cash acquired net of acquisition costs .................................. -- 1,396 -- Net cash used in investing activities ................................... (72,800) (52,920) (36,313) See notes to consolidated financial statements. 26

Consolidated Statements of Cash Flows Mylan Laboratories Inc. (dollars in thousands except supplemental disclosure) Year ended March 31, 2000 1999 1998 Cash flows from financing activities Payments on long-term obligations $ (15,696) $(14,740) $ (19,198) Cash dividends paid (20,663) (19,833) (19,525) Repurchase of common stock -- -- (2,459) Proceeds from exercise of stock options 3,587 10,137 2,445 Net cash used in financing activities (32,772) (24,436) (38,737) Net increase (decrease) in cash and cash equivalents 13,644 86,093 (22,400) Cash and cash equivalents - beginning of year 189,849 103,756 126,156 Cash and cash equivalents - end of year $ 203,493 $189,849 $103,756 Supplemental Disclosure For purposes of presentation in the balance sheets and the statements of cash flows, cash, overnight deposits and money market funds, and marketable securities with original maturities of less than three months have been classified as cash and cash equivalents. Cash payments for interest were $1,418,000 in 2000, $1,800,000 in 1999, and $3,426,000 in 1998. Cash payments for income taxes were $100,374,000 in 2000, $78,650,000 in 1999, and $59,770,000 in 1998. Certain stock option transactions result in a reduction of income taxes payable and a corresponding increase in additional paid-in capital. The amounts for the years ended March 31, 2000, 1999, and 1998 were $719,000, $4,302,000, and $652,000, respectively. In consideration for the exercise of stock options, the Company received and recorded into treasury stock 4,920 shares valued at $134,000 in fiscal 2000, 85,270 shares valued at $2,642,000 in fiscal 1999, and 513 shares valued at $12,000 in fiscal 1998. During scal 1999, the Company acquired all of the outstanding stock of Penederm (See note B). The purchase price of approximately $207,938,000 was satised principally through the issuance of the Company's common stock. In connection with product license agreements, the Company recorded intangible assets and the related obligations, in excess of amounts paid, of $2,250,000 in fiscal 2000 and $22,300,000 in fiscal 1999. 27

Notes to Consolidated Financial Statements Mylan Laboratories Inc. note (A) Summary of Significant Accounting Policies 1) Nature of Operations and Principles of Consolidation The consolidated financial statements include the accounts of Mylan Laboratories Inc. ("the Company") and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The Company is engaged in the development, manufacture and distribution of pharmaceutical products for resale by others. The principal markets for these products are proprietary and ethical pharmaceutical wholesalers and distributors, drug store chains, drug manufacturers, and public and governmental agencies within the United States. 2) Marketable Securities The Company's investments are classified as "available for sale" and are recorded at market value with net unrealized gains and losses, net of income taxes, reflected in accumulated other comprehensive earnings in shareholders' equity. Net gains and losses on sales of securities available for sale are computed on a specific security basis and included in other income. 3) Accounts Receivable and Revenue Recognition The Company recognizes revenue from product sales upon shipment to customers. Provisions for estimated discounts, rebates, price adjustments, returns and other adjustments are provided for in the same period as the related sales are recorded. Accounts receivable are presented net of provisions which amounted to $77,212,000 and $43,584,000 at March 31, 2000, and 1999, respectively. 4) Inventories Inventories are stated at the lower of cost (principally, first-in, first-out) or market. 5) Property, Plant and Equipment Property, plant and equipment are stated at cost. Depreciation is provided in amounts sufficient to relate the cost of depreciable assets to operations over their estimated service lives, principally on a straight-line basis. 6) Intangible Assets Intangible assets are stated at cost. Amortization is provided for on a straight-line basis over estimated useful lives not to exceed forty years. Intangible assets are periodically reviewed to determine recoverability by comparing carrying value to expected future cash flows. 7) Research and Development Research and development expenses are charged to operations as incurred. 8) Advertising Costs Advertising costs are expensed as incurred and amounted to $6,063,000, $5,683,000 and $3,526,000 in fiscal 2000, 1999, and 1998. 9) Income Taxes Income taxes have been provided for using an asset and liability approach in which deferred income taxes reflect the tax consequences on future years of events that have already been recognized by the Company in the financial statements or tax returns. Changes in enacted tax rates or laws will result in adjustments to the recorded tax assets or liabilities in the period that the tax law is enacted. 10) Concentrations of Credit Risk Financial instruments that potentially subject the Company to credit risk consist principally of interest-bearing investments and accounts receivable. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. Four of the Company's customers accounted for 15%, 15%, 11% and 10% of net sales in fiscal 2000. Three of the Company's customers accounted for 15%, 14% and 11% of net sales in fiscal 1999 and 13%, 12% and 11% in fiscal 1998. Approximately 62% and 56% of the accounts receivable balances represent amounts due from four customers at March 31, 2000, and 1999, respectively. 29

The Company invests its excess cash in deposits primarily with major banks and other high quality short-term liquid money market instruments (commercial paper, government and government agency notes and bills, etc.). These investments generally mature within twelve months. The Company maintains deposit balances at banks in excess of federally insured amounts, including a deposit in a newly formed regional bank at March 31, 2000. 11) Earnings per Common Share Basic earnings per common share is computed by dividing net earnings by the weighted average common shares outstanding for the period. Diluted earnings per common share is computed by dividing net earnings by the weighted average common shares outstanding adjusted for the dilutive effect of stock options granted under the Company's stock option plans, unless they are antidilutive (See note P). A reconciliation of diluted earnings per common share is as follows: (in thousands except per share amounts) Year ended March 31, 2000 1999 1998 Net earnings $154,246 $115,409 $100,777 Weighted average common shares outstanding 129,220 125,584 122,094 Dilutive effect of stock options 1,004 1,572 949 Diluted weighted average common shares outstanding 130,224 127,156 123,043 Diluted earnings per common share $ 1.18 $.91 $.82 12) Accounting Standards In June 1998, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards ("SFAS") No.133, "Accounting for Derivative Instruments and Hedging Activities." SFAS No.133 establishes accounting and reporting standards for derivative instruments, including certain derivatives embedded in other contracts, and hedging activities. It requires that an entity recognize all derivatives as either assets or liabilities on the balance sheet at fair value. As amended, this statement is effective for fiscal years beginning after June 15, 2000. The Company is currently evaluating the impact that SFAS No. 13 3 will have on its financial position and its results of operations. 13) Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. 14) Reclassification Certain prior year amounts have been reclassified to conform to the 2000 presentation. note (B) Acquisitions On October 2, 1998, a wholly-owned subsidiary of the Company acquired 100% of the outstanding stock of Penederm Inc. ("Penederm"). Penederm primarily develops and markets patented topical prescription products. Penederm maintains administrative and research and development facilities in Foster City, California. The business combination has been accounted for under the purchase method of accounting. Payment of approximately $207,938,000 was made principally through the issuance of 5,905,029 shares of the Company's common stock and the assumption of 877,367 stock options granted prior to the transaction. Goodwill and various intangible assets acquired totaled approximately $193,000,000 and are being amortized on a straight-line basis over periods not to exceed 20 years. The Company allocated a portion of the purchase price to in-process research and development ("IPR&D"). IPR&D represents ongoing research and development projects acquired by the Company which have not yet been approved by the Food and Drug Administration ("FDA") and would have no alternative future use. The Company used independent professional valuation consultants to assess and allocate values to IPR&D. 29

The Company acquired five IPR&D projects of which two were significant to the IPR&Dvaluation. One project is for the treatment of inflammatory fungal conditions while the other project is for a nail antifungal product. In assessing the value to be allocated to only these two projects, it was estimated that they were 42% complete and would require approximately $9,100,000 of additional Company funding to complete. Estimated future cash flows for each project were discounted to their present value using a rate of 31%. These discounted cash flow projections were then adjusted by the estimated completion percentage for each project. The total value allocated to all IPR&D projects was $29,000,000. At the date of acquisition, the Company believes that the assumptions used in the valuaton process were reasonable. No assurance can be given, however, that the underlying assumptions used in the valuation of these projects will be realized. Pharmaceutical product development has inherent risks in the formulation, manufacture, approval process and marketplace environment which could affect or prevent each of these projects from achieving commercial success. The results of Penederm's operations have been included in the Company's Consolidated Statements of Earnings from the date of acquisition. Unaudited pro forma information assuming the acquisition had occurred on April 1, 1997, is as follows, excluding the one-time charge of $29,000,000 relating to acquired IPR&D: (in thousands except per share amounts) Year ended March 31, 1999 1998 Total revenues $731,641 $565,378 Net earnings $140,948 $ 85,532 Diluted earnings per common share $ 1.08 $ .66 Diluted weighted average common shares outstanding 130,241 129,075 The pro forma financial information is presented for comparative purposes only and does not purport to be indicative of the operating results or financial position that would have occurred had the acquisition been consummated at the beginning of the periods presented, nor is such information necessarily indicative of the future operating results of the combined company after the acquisition. The Company purchased various product and marketing rights with an aggregate purchase price of $12,250,000 and $30,300,000 in fiscal 2000 and 1999. The purchase agreements require fixed payments and royalties on product sales in future periods (See note J). note (C) Inventories Inventories consist of the following components: (in thousands) March 31, 2000 1999 Raw materials $ 64,020 $ 57,414 Work in process 28,459 20,813 Finished goods 53,390 58,266 $ 145,869 $136,493 note (D) Property, Plant and Equipment Property, plant and equipment consists of the following components: (in thousands) March 31, Useful Lives 2000 1999 Land and land improvements -- 7,560 $6,583 Buildings and improvements 20 - 40 88,001 86,898 Machinery and equipment 5 - 10 151,308 137,716 Construction in progress -- 26,712 13,596 273,581 244,793 Less accumulated depreciation 105,581 90,157 $ 168,000 $154,636 30

note (E) Investment in and Advances to Somerset The Company owns 50% of the outstanding common stock of Somerset Pharmaceuticals, Inc. ("Somerset") and uses the equity method of accounting for its investment. Equity in loss/earnings of Somerset includes the Company's 50% portion of Somerset's financial results and expense for amortization of intangible assets resulting from the acquisition of Somerset. Such intangible assets are amortized over a 15 year period. Amortization expense amounted to $924,000 in fiscal 2000, 1999, and 1998. Additionally, the Company's charges to Somerset for management services and product development activities are included in Somerset's financial results. Condensed audited balance sheet information of Somerset is as follows: (in thousands) December 31, 1999 1998 1997 Current assets $65,511 $70,929 $53,973 Non-current assets 1,509 2,040 3,466 Current liabilities 14,459 16,584 15,660 Payable to owners 527 595 1,433 Condensed audited income statement information of Somerset is as follows: (in thousands) Year ended December 31, 1999 1998 1997 Net sales $ 18,403 $ 43,557 $66,956 Cost and expenses 23,622 19,316 30,055 Income taxes (1,395) 9,635 12,924 Net (loss) earnings $ (3,824) $ 14,606 $23,977 The above information represents 100% of Somerset's operations of which the Company has a 50% interest. Somerset's marketing exclusivity for Eldepryl® under the Orphan Drug Act expired on June 6, 1996. Somerset has experienced increased competition since August 1996 due to the approval of several generic tablet forms of EldeprylRegistration Mark by the FDA. This has resulted in a decrease in sales and net earnings. In 1997, Somerset was notified by the Internal Revenue Service ("IRS") that it had initiated a challenge related to issues concerning Somerset's Code Section 936 credit for tax years 1993 through 1995. As of December 31, 1999, the proposed adjustments by the IRS amounted to approximately $34,000,000 of additional income tax and interest charges over amounts accrued. The $20,000,000 increase over the prior year is primarily due to losses incurred by Somerset in 1999 and the anticipation of losses in the near future which would not allow Somerset to utilize Puerto Rican tax credits. Management of Somerset believes it has appropriately claimed the Code Section 936 credit and intends to vigorously defend its position on this matter. note (F) Marketable Securities The amortized cost and estimated market values of marketable securities at March 31, 2000 and 1999 are as follows: (in thousands) Gross Gross Amortized Unrealized UnrealizedMarket March 31, 2000 Cost Gains Losses Value Debt securities $81,133 $ 168 $ 405 $80,896 Equity securities 7,753 11,508 600 18,661 88,886 11,676 1,005 99,557 March 31, 1999 Debt securities 60,071 303 187 60,187 Equity securities 8,101 2,144 560 9,685 $68,172 $ 2,447 $ 747 $69,872 31

Maturities of debt securities at market value as of March 31, 2000, are as follows: (in thousands) Mature in one year or less $59,253 Mature after one year through five years 7,207 Mature after five years 14,436 $ 80,896 Proceeds from sales of marketable securities were $183,633,000, $50,151,000, and $17,233,000 during fiscal 2000, 1999 and 1998. Gross gains of $4,504,000, $942,000, and $767,000 and gross losses of $1,414,000, $205,000 and $82,000 were realized during fiscal 2000, 1999 and 1998. The cost of investments sold is determined by the specific identification method. note (G) Intangible Assets Intangible assets consist of the following components: (in thousands) March 31, Useful Lives 2000 1999 Patents and technologies 10 - 20 $ 123,052 $ 122,985 License fees and agreements 2 - 12 49,911 36,686 MaxzideRegistration Mark intangibles 256 9,666 69,666 Goodwill 20 - 40 128,008 128,480 Other 5 - 20 28,462 28,462 399,099 386,279 Less accumulated amortization 66,957 46,676 $ 332,142 $ 339,603 The Maxzide® intangibles relate to trademark, tradedress and marketing rights. The balance in Other consists principally of an assembled workforce, non- compete agreements, customer lists and contracts. Goodwill, patents and technologies and various other intangible assets of approximately $193,000,000 were acquired in the Penederm transaction in fiscal 1999 (See note B). note (H) Other Assets Other assets consist of the following components: (in thousands) March 31, 2000 1999 Pooled asset funds $ 60,839 $ 46,611 Cash surrender value 33,773 29,742 Other investments 30,269 30,196 $ 124,881 $106,549 Pooled asset funds primarily include the Company's interest in one limited partnership fund which consists of common and preferred stocks, bonds, and money market funds. Earnings on these investments included in Other income amounted to $15,378,000 in 2000, $19,530,000 in 1999, and $6,572,000 in 1998. At March 31, 2000, and 1999, the carrying amounts of these investments approximated fair value. Cash surrender value is related to insurance policies on certain officers and key employees and the value of split dollar life insurance agreements with certain current and former executive officers of the Company. Other investments are comprised principally of investments in non-publicly traded equity securities and are accounted for under the cost method. Management periodically reviews the carrying value of these investments for impairment. Adjustments of $9,450,000 and $12,525,000 were made in fiscal 2000 and 1999 to reduce the carrying value of these investments to their estimated fair value and are recorded as reductions to Other income. 32

note I Other Current Liabilities Other current liabilities consist of the following components: (in thousands) March 31, 2000 1999 Payroll and employee benefit plan accruals $14,286 $ 20,672 VivoRx funding 1,545 10,302 Medicaid 8,151 8,305 Legal and professional 4,786 3,811 Royalties 8,763 4,958 Product license fees 4,165 8,802 Other 5,167 4,429 $46,863 $ 61,279 In fiscal 1999, the Company recorded an arbitration award for research and development funding which is identified here as VivoRx funding. note (J) Long-Term Obligations Long-term obligations include accruals for postretirement compensation pursuant to agreements with certain key employees and directors of approximately $15,400,000, and $13,463,000 at March 31, 2000, and 1999. Under these agreements, benefits are to be paid over periods of 10 to 15 years commencing at retirement. The Company's obligation on 10.5% senior promissory notes is $3,000,000 and $4,000,000 at March 31, 2000, and 1999. Future principal payments on these notes are $1,000,000 in fiscal 2001 and $2,000,000 in fiscal 2002. At March 31, 2000, and 1999, the Company was in compliance with all of its debt covenants. The present value of the Company's obligations for product acquisitions was $11,121,000 at March 31, 2000, and $24,605,000 at March 31, 1999. Future payments, including minimum royalty payments for these agreements, will be approximately $2,000,000 in fiscal 2001, $3,750,000 in fiscal 2002 and $2,000,000 in fiscal 2003. During fiscal 2000, the Company recorded $9,238,000 in deferred revenue relating to a license and supply agreement. Revenue will be recognized ratably over the next five years. note (K) Income Taxes Income taxes consist of the following components: (in thousands) Year ended March 31, 2000 1999 1998 Federal: Current $ 97,957 $77,546 $45,601 Deferred (21,596) (9,617) (2,993) 76,361 67,929 42,608 State: Current 13,807 9,653 5,218 Deferred (1,671) (697) (214) 12,136 8,956 5,004 Income taxes 88,497 76,885 47,612 Pre-tax earnings $ 242,743 $192,294 $148,389 Effective tax rate 36.5% 40.0% 32.1% 33

Temporary differences and carryforwards which give rise to the deferred tax assets and liabilities are as follows: (in thousands) March 31, 2000 1999 Deferred tax assets: Employee benefits $ 6,651 $5,090 Contractual agreements 7,964 - Intangible assets 2,043 3,627 Asset allowances 31,241 17,841 Inventory 1,084 1,069 Investments 10,481 5,411 Tax loss carryforwards 12,708 18,198 Tax credit carryforwards 5,596 3,683 Other - 266 Total deferred tax assets 77,768 55,185 Deferred tax liabilities: Plant and equipment 11,017 10,373 Intangible assets 41,205 43,675 Investments 13,862 6,506 Total deferred tax liabilities 66,084 60,554 Deferred tax asset (liability) - net $ 11,684 $ (5,369) Classification in the consolidated balance sheets: Deferred income tax benefit - current $ 30,792 $ 18,199 Deferred income tax liability - non-current 19,108 23,568 Deferred tax asset (liability) - net $ 11,684 $ (5,369) Deferred tax assets relating to net operating loss carryforwards and research and development tax credit carryforwards were acquired during fiscal 1999 upon the acquisition of Penederm. Future utilization of these assets is subject to certain limitations set forth in the Internal Revenue Code. In fiscal 2000, the Company utilized acquired net operating loss carryforwards and credit carryforwards to reduce its current tax liability by approximately $4,800,000. The Company has approximately $36,300,000 of acquired federal tax loss carryforwards and $2,146,000 of acquired federal and state tax credits remaining to offset future taxable income. The loss carryforwards and tax credits expire in fiscal years 2007 through 2013. The Company also has $1,650,000 of federal research and development tax credits that are deferred until fiscal 2001 based upon recent tax law changes. A$1,800,000 tax credit against Puerto Rican local income tax is also available for future years. A reconciliation of the statutory tax rate to the effective tax rate is as follows: Year ended March 31, 2000 1999 1998 Statutory tax rate 35.0% 35.0% 35.0% IPR&D -- 5.3% -- State income taxes-net 3.1% 3.1% 2.3% Nondeductible amortization 1.0% 0.8% 0.6% Tax exempt earnings-primarily dividends -- (1.1%) (2.4%) Tax credits (2.7%) (2.6%) (3.0%) Other items 0.1% (0.5%) (0.4%) Effective tax rate 36.5% 40.0% 32.1% Tax credits result principally from the Company's operations in Puerto Rico and from qualified research and development expenditures. State income taxes include provisions for tollgate tax resulting from the future repatriation of funds from the Company's operation in Puerto Rico to the United States. Such provisions have been made to the minimum extent provided under Puerto Rican tax law based on the Company's intent to reinvest Puerto Rican source earnings in qualifying investments within Puerto Rico. The Company's federal tax returns have been audited by the IRS through March 31, 1996. 34

note (L) Common Stock On August 23, 1996, the Company's Board of Directors adopted a Shareholder Rights Plan ("the Rights Plan"). The Rights Plan was adopted to provide the Company's Directors with sufficient time to assess and evaluate any takeover bid and explore and develop a reasonable response. Effective November 8, 1999, the Rights Plan was amended to eliminate the special rights held by continuing directors. The Rights Plan will expire on September 5, 2006, unless a triggering event has occurred. note (M) Commitments The Company has entered into various product licensing agreements. In some of these arrangements, the Company provides funding for the development of the product, through milestone payments, in exchange for marketing and distribution rights to the product. In the event all projects are successful, milestone payments totaling $18,800,000 would be paid over the next five years. note (N) Other Revenues Under the terms of the Company's supply and distribution agreement with Genpharm Inc. ("Genpharm") relating to sales of ranitidine HCl tablets, the Company also benefitted from an agreement between Genpharm and Novopharm Limited ("Novopharm"). The Company recognized revenue of $26,822,000 in fiscal 1998 in connection with the Genpharm Novopharm agreement (See note S). note O Fair Value of Financial Instruments The carrying values of cash and cash equivalents approximate fair value due to the short-term maturity of these instruments. Marketable securities are recorded at fair value based on quoted market prices. The carrying value of other financial instruments approximates their fair value based on other appropriate valuation techniques. note (P) Stock Option Plans On January 23, 1997, the Board of Directors adopted the "Mylan Laboratories Inc. 1997 Incentive Stock Option Plan" ("the Plan") which was approved by the shareholders on July 24, 1997. Under the Plan, the Company may grant up to 10,000,000 shares of its common stock to officers, employees, and nonemployee consultants and agents as either incentive stock options or nonqualified stock options. Options, which may be granted at not less than fair market value on the date of the grant, may be exercised within ten years from the date of grant. Nonqualified stock options generally vest on date of grant. Incentive stock options granted have the following vesting schedule: 25% two years from the date of grant, 25% at the end of year three and the remaining 50% at the end of year four. As of March 31, 2000, 7,279,150 shares are available for future grants. On June 23, 1992, the Board of Directors adopted the "1992 Nonemployee Director Stock Option Plan" ("the Directors' Plan") which was approved by the shareholders on April 7, 1993. A total of 600,000 shares of the Company's common stock are reserved for issuance upon exercise of stock options which may be granted at not less than fair market value on the date of grant. Options may be exercised within ten years from the date of grant. As of March 31, 2000, 382,500 shares have been granted pursuant to the Directors' Plan. 35

Additional stock options are outstanding from the expired 1986 Incentive Stock Option Plan and other plans acquired through acquisitions. A summary of the activity resulting from all plans is as follows: Weighted average Number of shares exercise price under option per share Outstanding as of April 1, 1997 2,570,877 $12.10 Options granted 1,322,000 17.08 Options exercised (235,216) 11.09 Options cancelled (41,175) 14.17 Outstanding as of March 31, 1998 3,616,486 $13.96 Options acquired - Penederm 877,367 15.30 Options granted 186,500 19.74 Options exercised (1,013,313) 12.16 Options cancelled (117,886) 16.96 Outstanding as of March 31, 1999 3,549,154 $15.11 Options granted 1,410,100 25.50 Options exercised (309,054) 12.04 Options cancelled (53,419) 18.34 Outstanding as of March 31, 2000 4,596,781 $18.44 Options outstanding Options exercisable ----------------------------- -------------------------------- Weighted average Weighted Weighted Range of Number remaining average Number average exercise price outstanding as contractual life exercise price exercisable as exercise price per share of 3/31/2000 (years) per share of 3/31/2000 per share $ 0.81- $11.58 266,341 3.15 $ 7.77 266,341 $ 7.77 12.00- $12.00 976,653 2.23 12.00 976,653 12.00 12.32- $16.69 949,971 7.05 16.19 577,972 16.11 16.73- $21.14 728,091 7.03 17.95 672,591 17.96 22.88- $25.00 474,671 8.59 23.18 65,571 24.88 26.06- $30.15 1,201,054 9.91 26.25 64,054 29.64 $ 0.81- $30.15 4,596,781 6.70 $18.44 2,623,182 $14.76 At March 31, 2000, options were exercisable for 2,623,182 shares at a weighted average exercise price of $14.76 per share. The corresponding amounts were 2,665,904 shares at $14.12 per share at March 31, 1999, and 2,557,856 shares at $13.20 per share at March 31, 1998. In accordance with the provisions of SFAS No. 123 "Accounting for Stock-Based Compensation," the Company will continue to apply the provisions of Accounting Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees" and, accordingly, does not recognize compensation costs for its existing stock option plans. If the Company had elected to recognize compensation costs based on the alternative fair value method prescribed by SFAS No. 123, net earnings and earnings per share (on both a basic and diluted basis) would have been reduced by $1,430,000, or $.01 per share, $1,613,000, or $.01 per share and $6,489,000, or $.04 per share for the years ended March 31, 2000, 1999 and 1998. These calculations only take into account options issued since April 1, 1995. 36

The weighted average fair value of options granted during the years ended March 31, 2000, 1999 and 1998 was $9.93, $9.37 and $6.47. The fair value was estimated using the Black-Scholes option pricing model based on the following assumptions: March 31, 2000 1999 1998 Volatility 34% 42% 35% Risk-free interest rate 6.2% 5.0% 6.1% Dividend yield 0.6% 1.0% 1.0% Expected term of options (in years) 5.2 5.2 5.4 note (Q) Employee Benefits The Company maintains profit sharing and 401(k) retirement plans covering essentially all of its employees. Contributions to the profit sharing plans are made at the discretion of the Board of Directors. Contributions to the 401(k) plans are based upon employee contributions or service hours. Total contributions to all plans for the years ended March 31, 2000, 1999 and 1998 were $6,342,000, $4,776,000 and $3,889,000 respectively. In fiscal 1999, the Company adopted a plan covering substantially all of its employees to provide for limited reimbursement of supplemental postretirement medical coverage. The plan provides benefits to employees retiring after April 5, 1998, who meet minimum age and service requirements. The Company has provided for the costs of these benefits, which are not material. The future obligation related to these benefits is insignificant. The Company provides supplemental life insurance benefits to certain management level employees. Such benefits require annual funding and may require accelerated funding in the event of a change in control of the Company. note (R) Segment Reporting The Company has two reportable operating segments, Generic and Branded Pharmaceuticals, based on differences in products, marketing and regulatory approval. Generic pharmaceutical products are off-patented products, therapeutically equivalent to a branded name product, marketed to pharmaceutical wholesalers and distributors, drug store chains and public and governmental agencies by multiple suppliers. These products have been approved by the FDA through an Abbreviated New Drug Application process. Branded pharmaceutical products are generally, when new, patent protected products marketed directly to health care professionals by a single provider. These products have been approved by the FDA primarily through a New Drug Application process. The accounting policies of the operating segments are the same as those described in note A. In the following table, segment revenues represent sales to unrelated third parties with corresponding corporate wide cost of sales used to determine segment profits. Segment profits represent earnings from continuing operations before a provision for income taxes. 37

Corporate/ March 31, (dollars in thousands) Generic Branded Other Consolidated Total revenues 2000 $ 667,808 $ 122,337 -- $ 790,145 1999 638,122 83,001 -- 721,123 1998 501,320 54,103 -- 555,423 Segment profit (1) 2000 261,238 15,630 $ (34,125) 242,743 1999 226,153 14,941 (48,800) 192,294 1998 143,309 6,728 (1,648) 148,389 Segment assets (2) 2000 464,277 259,196 617,757 1,341,230 1999 396,293 257,860 552,508 1,206,661 1998 398,189 126,878 322,686 847,753 Property, plant and equipment additions 2000 23,376 5,157 255 28,788 1999 11,646 3,991 1,099 16,736 1998 24,843 3,925 85 28,853 Deprecation and amortization (1)&(2) 2000 12,919 15,540 7,247 35,706 1999 11,452 10,246 5,213 26,911 1998 10,950 8,084 2,674 21,708 (1)Segment profit represents segment gross profit less direct research and development, sales and marketing, and administrative expenses. Corporate and Other Segment profit represents consolidated non-operating income less corporate expenses, including legal expenditures, IPR&D and goodwill amortization. (2)Generic and Branded Segment assets include property, plant and equipment, trade accounts receivable, inventory and intangible assets other than goodwill. Corporate and Other Segment assets includes consolidated cash and cash equivalents, marketable securities,the Company's investment in Somerset and other assets, goodwill and all income tax related assets. note (S) Contingencies The Company is involved in various legal proceedings that are considered normal to its business. While it is not feasible to predict the ultimate outcome of such proceedings, it is the opinion of management that the ultimate outcome will not have a material adverse effect on the Company's operations or its financial position. The Company had an agreement with Genpharm where it benefitted from the sale of ranitidine HCl tablets by Novopharm under a separate agreement between Genpharm and Novopharm (See note N). Based on an independent audit, Genpharm initiated a lawsuit against Novopharm to resolve contract interpretation issues and collect additional funds due. In response to Genpharm's suit, Novopharm filed counterclaims against both Genpharm and the Company claiming damages of up to $60,000,000. The Company believes the counte rclaims against Genpharm and the Company are without merit and will vigorously defend its position. In June 1998, the Company filed suit in the Los Angeles Superior Court against American Bioscience, Inc. ("ABI"), American Pharmaceutical Partners, Inc. ("APP") and certain of their directors and officers. The Company's suit seeks various legal and equitable remedies. The Los Angeles Superior Court issued a preliminary injunction order which, among other things, prohibits the defendants from transferring or disposing of funds, assets, technology or property without the Company's consent or commingling as sets, property, technology or personnel with those of another company. In June 1999, the defendants filed an answer to and cross-complaint against the Company. The cross-complaint alleges violations of California state laws, interference with contractual relations and prospective economic advantage, fraud, slander, libel and other allegations. The cross-complainants seek unspecified compensatory and punitive damages. The Company believes the cross-complaints are without merit and intends to vigorously defend its position. 38

A subsidiary of the Company was involved in a dispute with KaiGai Pharmaceuticals, Co., Ltd. ("KaiGai") relating to a license and supply contract for nitroglycerin transdermal patches which both parties claim was breached by the other. KaiGai sought damages in excess of $20,000,000. The dispute was subject to binding arbitration, and, in November 1999, the arbitration panel denied KaiGai's request for damages. KaiGai filed an appeal and the Company has filed a moton to dismiss the appeal due to the appeal not being filed within the permitted time period. In November 1999, the Company and a state agency entered into a settlement concerning certain contract pricing matters. The settlement was satisfied without a significant effect on the Company's financial position or results of operations. On December 22, 1998, the Federal Trade Commission ("FTC") filed suit in U.S. District Court for the District of Columbia (the "Court") against the Company. The FTC's complaint alleges the Company engaged in restraint of trade, monopolization, attempted monopolization and conspiracy to monopolize, arising out of certain agreements involving the supply of raw materials used to manufacture two drugs. The FTC also sued in the same case the foreign supplier of the raw materials, the supplier's parent company and its United States distributor. Under the terms of the agreements related to these raw materials, the Company has agreed to indemnify these parties. The Company is a party to other suits involving the Attorneys General from 33 states and more than 25 putative class actions that allege the same conduct alleged in the FTC suit as well as alleged violations of state consumer protection laws. A qui tam action was commenced by a private party in the U.S. District Court for the District of South Carolina, purportedly on behalf of the United States, alleging violations of the False Claims Act and other statutes. The relief sought by the FTC includes an injunction barring the Company from engaging in the challenged conduct, recision of certain agreements and disgorgement in excess of $120,000,000. The states and private parties seek similar relief, treble damages and attorneys' fees. The Company's motions to dismiss several of the private actions have been granted. A class action suit was filed alleging violations of federal securities laws by the Company and certain directors and officers of the Company. Without specifying a dollar amount, the suit sought compensatory damages. The Company's motion to dismiss the federal securities case was granted on December 22, 1999. The case is on appeal. The Company had filed motions to dismiss the FTC complaint and significant portions of the State Attorneys General complaints. In July 1999, the Court denied the Company's motion to dismiss the FTC complaint. The Company filed a motion requesting the Court to certify its ruling with respect to the jurisdictional issue for expedited appeal to the U.S. Court of Appeals for the District of Columbia. This motion was denied. The Court granted in part and denied in part the Company's motion to dismiss portions of the State Attorneys General complaints. In so doing, the Court limited certain theories of recovery asserted by the states. Some states filed a motion with the Court requesting that it reconsider certain claims that were dismissed, and, in December 1999, the Court reinstated certain claims. In February 2000, the Company received notice of threatened litigation by another generic manufacturer. The potential complaint is based on similar factors alleged in the FTC litigation relating to the generic product clorazepate. The Company believes that it has meritorious defenses to the claims in these FTC matters and intends to vigorously defend them. Although the Company believes it has meritorious defenses to the claims, an adverse result in these suits could have a material adverse effect on the Company's financial position and results of its operations. 39

Board of Directors and Shareholders Mylan Laboratories Inc. Pittsburgh, Pennsylvania Independent Auditors' Report Mylan Laboratories Inc. We have audited the accompanying consolidated balance sheets of Mylan Laboratories Inc. and subsidiaries as of March 31, 2000 and 1999, and the related consolidated statements of earnings, shareholders' equity and cash flows for each of the three years in the period ended March 31, 2000, appearing on pages 22 through 39. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with generally accepted auditing standards in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of Mylan Laboratories Inc. and subsidiaries as of March 31, 2000 and 1999, and the results of their operations and their cash flows for each of the three years in the period ended March 31, 2000, in conformity with generally accepted accounting principles in the United States of America. Deloitte & Touche LLP Pittsburgh, Pennsylvania May 10, 2000 40

Market Information Mylan Laboratories Inc. Quarterly Financial Data (Amounts in thousands 1st 2nd 3rd 4th except per share amounts) Quarter Quarter Quarter Quarter Year Fiscal 2000 Total revenues $ 177,095 $ 194,489 $203,877 $ 214,684 $790,145 Gross profit 96,247 110,812 111,152 110,116 428,327 Net earnings 31,953 37,066 40,434 44,793 154,246 Earnings per share-basic .25 .29 .31 .35 1.19 Earnings per share-diluted .25 .28 .31 .34 1.18 Fiscal 1999 Total revenues $ 166,718 $ 177,592 $186,195 $ 190,618 $ 721,123 Gross profit 85,154 92,044 99,716 107,363 384,277 Net earnings 34,182 37,215 8,154 35,858 115,409 Earnings per share-basic .28 .30 .06 .28 .92 Earnings per share-diluted .28 .30 .06 .27 .91 Market Prices 1st 2nd 3rd 4th Quarter Quarter Quarter Quarter Fiscal 2000 High 28 3\8 30 5\16 25 5\8 30 Low 21 5\8 17 1\16 17 3\16 22 1\2 Fiscal 1999 High 32 3\4 35 1\8 35 15\16 32 Low 22 1\16 22 1\8 24 5\16 26 1\4 New York Stock Exchange Symbol: MYL On May 1, 2000, the Company had approximately 99,112 shareholders. Split Date Amount Split Price Presplit Price July 20, 1979 5/4 10 3\4 13 1\2 November 13, 1981 2/1 13 1\2 27 1\8 June 30, 1983 2/1 16 1\4 32 1\2 March 1, 1984 3/2 14 21 July 31, 1984 3/2 19 7\8 29 3\4 February 15, 1985 2/1 17 7\8 35 3\4 August 1, 1986 3/2 14 21 August 1, 1992 2/1 21 3\4 43 1\2 August 15, 1995 3/2 21 31 1\2 41

Shareholder Information Mylan Laboratories Inc. Notice of Annual Meeting The annual meeting of the Company's shareholders will be held on Thursday, July 27, 2000 at 10:00 a.m. at the David L. Lawrence Convention Center, South Hall, 1001 Penn Avenue, Pittsburgh, Pennsylvania. A formal notice, together with a proxy statement and form of proxy, will be mailed to shareholders entitled to vote in advance of the meeting. Stockholder Information Questions concerning stock ownership may be directed to Investor Relations at Corporate headquarters. Press Release Information Press releases and other information are available on the internet at Mylan's homepage at www.mylan.com. Form 10-K Annual Report A copy of the Mylan Laboratories Inc. Annual Report to the Securities and Exchange Commission on Form 10-K is available by contacting Investor Relations at the Company's headquarters. Dividend Payments Quarterly dividends on Mylan common stock are paid in January, April, July, and October. The record date is established by the Company prior to each dividend payment. The Company also offers an Automatic Dividend Reinvestment and Stock Purchase Plan. For further information, contact Investor Relations at the Company's headquarters. Corporate Headquarters Mylan Laboratories Inc. 1030 Century Building 130 Seventh Street Pittsburgh, Pennsylvania 15222 (412) 232-0100 http://www.mylan.com Registrar and Transfer Agent American Stock Transfer & Trust Company 40 Wall Street New York, New York 10005 Certied Public Accountants Deloitte &Touche LLP Pittsburgh, Pennsylvania Financial Consultants PDA Associates, Inc. Ironia, New Jersey Securities Traded New York Stock Exchange Mylan Laboratories Inc. Common Stock Symbol: MYL 42

Board of Directors and Corporate Officers - ----------------------------------------- Board of Directors - ---------------------- Milan Puskar Chairman of the Board and C.E.O. Dana G. Barnett Executive Vice President of the Company Laurence S. DeLynn Retail Consultant Morgantown, West Virginia John C. Gaisford, M.D. Director of Burn Research West Penn Hospital Pittsburgh, Pennsylvania Douglas J. Leech Chairman, President and C.E.O. Centra Bank, Inc. and Centra Financial Holdings, Inc. Morgantown, West Virginia Patricia A. Sunseri Vice President-Investor and Public Relations of the Company C.B. Todd Retired Pharmaceutical Executive Executive Officers - ---------------------- Milan Puskar Chairman and C.E.O. Richard F. Moldin President and C.O.O. Dana G. Barnett Executive Vice President Louis J. DeBone Senior Vice President Roger L. Foster, Esq. Vice President and General Counsel Roderick P. Jackson Senior Vice President Donald C. Schilling Vice President-Finance and C.F.O. Robert W. Smiley, Esq. Secretary Patricia A. Sunseri Vice President-Investor and Public Relations Design:John Brady Design Consultants Inc., Pittsburgh, Pennsylvania For more information I would like more information on: Dividend Reinvestment Stock Purchase Program Pharmaceutical Product Identification Guide Generic Development and Approval Brochure ® Name Address City/State/Zip Phone Mylan Laboratories Inc. 1030 Century Building 130 Seventh Street Pittsburgh, Pennsylvania 15222 www.mylan.com




                                                   EXHIBIT 21



                                                   Subsidiaries


Name                                                 State of Incorporation
- ----                                                 ----------------------
Milan Holding, Inc.                                     Delaware
Mylan Inc.                                              Delaware
Mylan Pharmaceuticals Inc.                              West Virginia
Mylan Caribe Inc.                                       Vermont
Bertek Pharmaceuticals, Inc.                            Texas
Mylan Technologies, Inc.                                West Virginia
American Triumvirate Insurance Company                  Vermont
Roderick Corporation                                    Delaware
UDL Laboratories, Inc.                                  Illinois
Bertek Pharmaceuticals Inc. Research                    Delaware
     and Development Division




INDEPENDENT AUDITORS' CONSENT

We consent to the  incorporation  by reference in  Registration  Statement  Nos.
333-65329,   333-65327,   333-35887,  333-43081,  33-65916,  33-65918  of  Mylan
Laboratories Inc. on Form S-8 of our report dated May 10, 2000,  incorporated by
reference in this Annual Report on Form 10-K of Mylan  Laboratories Inc. for the
year ended March 31, 2000.

/s/  Deloitte & Touche LLP

Deloitte & Touche LLP
Pittsburgh, Pennsylvania
June 22, 2000

INDEPENDENT AUDITOR' CONSENT We consent to the incorporation by reference in Registration Statement Nos. 333-65329, 333-65327, 333-35887, 333-43081, 33-65916, 33-65918 of Mylan Laboratories Inc. on Form S-8 of our report dated February 4, 2000, relating to the consolidated financial statements of Somerset Pharmaceuticals, Inc. and subsidiaries for each of the three years in the period ended December 31, 1999, appearing in this Annual Report on Form 10-K of Mylan Laboratories Inc. for the year ended March 31, 2000. /s/ Deloitte & Touche LLP Deloitte & Touche LLP Pittsburgh, Pennsylvania June 22, 2000

  


5 Exhibit 27 Financial Data Schedule Mylan Laboratories Inc. and Subsidiaries Article 5 of Regulation S-X The schedule contains summary financial information extracted from the Consolidated Balance Sheets at March 31, 2000 and the Consolidated Statement of Earnings for the twelve months ended March 31, 2000 and is qualified in its entirety by reference to such financial statements. 0000069499 Exhibit 27 1,000 12-MOS MAR-31-2000 MAR-31-2000 203,493 99,557 274,973 77,212 145,869 686,746 273,581 105,581 1,341,230 87,770 25,104 0 0 65,139 1,138,583 1,341,230 790,145 790,145 361,818 361,818 205,368 2,035 390 242,743 88,497 154,246 0 0 0 154,246 1.19 1.18
SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES

Consolidated Financial Statements for the
Years Ended December 31, 1999, 1998 and 1997, and
Independent Auditors' Report

INDEPENDENT AUDITORS' REPORT To the Board of Directors of Somerset Pharmaceuticals, Inc.: We have audited the accompanying consolidated balance sheets of Somerset Pharmaceuticals, Inc. and subsidiaries as of December 31, 1999 and 1998, and the related consolidated statements of operations, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 1999. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of Somerset Pharmaceuticals, Inc. and subsidiaries as of December 31, 1999 and 1998, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 1999 in conformity with generally accepted accounting principles. February 4, 2000 - -2-

SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS DECEMBER 31, 1999 AND 1998 - ------------------------------------------------------------------------------ ASSETS 1999 1998 CURRENT ASSETS: Cash and cash equivalents $ 18,914,000 $ 18,672,000 Investment securities 40,230,000 41,412,000 Accounts receivable (net of allowance for doubtful accounts of $206,000 and $250,000, respectively) 2,846,000 6,085,000 Inventories 1,972,000 2,350,000 Prepaid expenses and other current assets 1,549,000 2,410,000 Total current assets 65,511,000 70,929,000 PROPERTY AND EQUIPMENT - Net 436,000 514,000 INTANGIBLE ASSETS - Net 675,000 868,000 OTHER ASSETS 398,000 658,000 ------------ ------------ $ 67,020,000 $ 72,969,000 ============ ============ LIABILITIES AND STOCKHOLDERS' EQUITY 1999 1998 CURRENT LIABILITIES: Accounts payable $ 49,000 $ 1,281,000 Royalty payable 385,000 799,000 Medicaid payable 225,000 578,000 Other accrued expenses 464,000 587,000 Accrued research and development 5,369,000 2,924,000 Income taxes payable 6,602,000 8,280,000 Accrued sales returns 733,000 800,000 Accrued compensation 105,000 740,000 Amounts due to related parties 527,000 595,000 Total current liabilities 14,459,000 16,584,000 STOCKHOLDERS' EQUITY: Common stock, $.01 par value; 13,719 shares authorized, 11,297 shares issued - - Retained earnings 53,013,000 56,837,000 Less treasury stock, 644 shares at cost (452,000) (452,000) Total stockholders' equity 52,561,000 56,385,000 ---------- ---------- $ 67,020,000 $ 72,969,000 ========== ========== See notes to consolidated financial statements.

SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF OPERATIONS YEARS ENDED DECEMBER 31, 1999, 1998 AND 1997 1999 1998 1997 NET SALES $ 18,403,000 $ 43,557,000 $ 66,956,000 ------------- ------------- ------------ COSTS AND EXPENSES: Cost of sales 2,177,000 4,623,000 6,622,000 Marketing 2,180,000 4,587,000 5,757,000 Research and development 17,588,000 7,269,000 13,073,000 Administrative 5,203,000 6,449,000 7,338,000 ---------- ---------- --------- 27,148,000 22,928,000 32,790,000 ----------- ----------- ---------- (8,745,000) 20,629,000 34,166,000 OTHER INCOME - Net 3,526,000 3,612,000 2,735,000 ---------- ---------- --------- (LOSS) INCOME BEFORE INCOME TAXES (5,219,000) 24,241,000 36,901,000 PROVISION FOR INCOME TAXES (1,395,000) 9,635,000 12,924,000 ------------ ---------- ---------- NET (LOSS) INCOME $ (3,824,000) $ 14,606,000 $ 23,977,000 ============== ============= ============ See notes to consolidated financial statements.

SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY YEARS ENDED DECEMBER 31, 1999, 1998 AND 1997 Common Stock Treasury Stock Retained Stockholders' -------------------------- --------------------------- Shares Amount Shares Amount Earnings Equity BALANCE, DECEMBER 31, 1996 11,297 $ -- 644 $ (452,000) $ 34,254,000 $ 33,802,000 Net income ............. -- -- -- -- 23,977,000 23,977,000 Dividends .............. -- -- -- -- (16,000,000) (16,000,000) ------------ ------------ ------------ ------------ ------------ ------------ BALANCE, DECEMBER 31, 1997 11,297 -- 644 (452,000) 42,231,000 41,779,000 Net income ............. -- -- -- -- 14,606,000 14,606,000 ------------ ------------ ------------ ------------ ------------ ------------ BALANCE, DECEMBER 31, 1998 11,297 -- 644 (452,000) 56,837,000 56,385,000 Net loss ............... -- -- -- -- (3,824,000) (3,824,000) ------------ ------------ ------------ ------------ ------------ ------------ BALANCE, DECEMBER 31, 1999 11,297 $ -- 644 $ (452,000) $ 53,013,000 $ 52,561,000 ============ ============ ============ ============ ============ ============ See notes to consolidated financial statements.

SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS YEARS ENDED DECEMBER 31, 1999, 1998 AND 1997 1999 1998 1997 CASH FLOWS FROM OPERATING ACTIVITIES: Net (loss) income $ (3,824,000) $ 14,606,000 $ 23,977,000 Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: Depreciation and amortization 335,000 429,000 952,000 Deferred tax expense (benefit) 260,000 232,000 (8,000) (Gain) loss on sale of property and equipment (1,000) 5,000 422,000 Changes in operating assets and liabilities: Accounts receivable 3,239,000 (2,559,000) 2,646,000 Inventories 378,000 (1,273,000) 627,000 Prepaid expenses and other current assets 861,000 (1,144,000) 2,415,000 Accounts payable (1,232,000) 765,000 (135,000) Royalty payable (414,000) (373,000) (454,000) Medicaid payable (353,000) (109,000) - Accrued research and development 2,445,000 (1,470,000) (184,000) Other accrued expenses and related parties (893,000) (1,070,000) (1,709,000) Income taxes payable (1,678,000) 3,181,000 (933,000) ------------ ---------- --------- Net cash (used in) provided by operating activities (877,000) 11,220,000 27,616,000 ---------- ----------- ---------- CASH FLOWS FROM INVESTING ACTIVITIES: Net decrease (increase) in investment securities 1,182,000 (25,449,000) (14,955,000) Purchases of property and equipment (67,000) (12,000) (42,000) Proceeds from sale of property and equipment 4,000 14,000 2,000,000 Decrease in other assets - 758,000 45,000 -- -------- ------ Net cash provided by (used in) investing activities 1,119,000 (24,689,000) (12,952,000) ---------- ------------- ------------ (Continued) SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS YEARS ENDED DECEMBER 31, 1999, 1998 AND 1997 1999 1998 1997 CASH FLOWS FROM FINANCING ACTIVITIES - Dividends paid on common stock $ -- $ -- $ (16,000,000) ------------- ----------- ------------ Cash used in financing activities -- -- (16,000,000) ------------- ----------- ------------ NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 242,000 (13,469,000) (1,336,000) CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR 18,672,000 32,141,000 33,477,000 ----------- ----------- ---------- CASH AND CASH EQUIVALENTS, END OF YEAR $ 18,914,000 $ 18,672,000 $ 32,141,000 ============= ============= ============ SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION - Cash paid during the year for income taxes $ 2,152,500 $ 7,762,000 $ 12,092,000 ============ ============ ============ See notes to consolidated financial statements.

SOMERSET PHARMACEUTICALS, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS YEARS ENDED DECEMBER 31, 1999, 1998 AND 1997 1. PRINCIPLES OF CONSOLIDATION AND OPERATIONS The consolidated financial statements include the accounts of Somerset Pharmaceuticals, Inc. (the "Company") and its wholly owned subsidiaries, Somerset Pharmaceuticals Holding Company and Somerset Caribe, Inc. The Company is jointly owned by Mylan Laboratories, Inc. and Watson Pharmaceuticals, Inc. ("Watson"), with each owning 50% of the outstanding common stock of the Company. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company, incorporated in February 1986, is engaged in the development, testing and marketing of drugs to be used in the treatment of various human disorders. Currently, the Company manufactures (at its facility in Puerto Rico), markets and sells Eldepryl, which is used as a treatment for Parkinson's Disease. The Company had exclusivity relating to the chemical compound Eldepryl for use as a treatment for late stage Parkinson's Disease through June of 1996. In May 1996, the Company received approval from the Food and Drug Administration for Eldepryl capsules and withdrew the tablet form from the marketplace. Competitors entered the marketplace with a generic version of the tablet in August 1996. The loss of exclusivity and the introduction of competitive products has had and could continue to have a material impact on the Company's future operating results. The Company is party to an exclusive 14-year agreement (through November 22, 2003) with Chinoin Pharmaceutical Company ("Chinoin") of Budapest, Hungary under which Eldepryl and other new potential drugs resulting from Chinoin research are made available for licensing by the Company. The license agreement requires the Company to pay royalties equal to 3.5% of net sales of Eldepryl including sub-license revenues. The Company incurred royalty expense of approximately $794,000, $1,730,000, and $2,716,000 for the years ended December 31, 1999, 1998 and 1997, respectively. The license agreement also required the Company to purchase the main raw material used in the manufacture of Eldepryl from Chinoin through June of 1999. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES a. Cash and Cash Equivalents - The Company generally considers debt instruments purchased with a maturity of three months or less and investments in money market accounts to be cash equivalents. b. Investment Securities - The Company accounts for investment securities in accordance with Statement of Financial Accounting Standards ("SFAS") No. 115, "Accounting for Certain Investments in Debt and Equity Securities." At December 31, 1999 and 1998, the investment securities were available-for-sale, and there were no material unrealized gains or losses. Proceeds from sales and maturities of investments were $151,619,000 and $116,712,000, in 1999 and 1998, respectively. In 1999 there were $1,686,000 of realized gains and $-0- of realized losses. There were $1,356,000 of realized gains and $23,400 of realized losses in 1998. The gain or loss on sale of investments is based on the specific identification method. c. Inventories - Inventories are stated at the lower-of-cost or market, with cost determined on a first-in, first-out basis.

d. Property and Equipment - Property and equipment are stated at cost. Depreciation is provided over the estimated useful lives of the assets by the straight-line method. Estimated useful lives are five to seven years. e. Intangible Assets - Intangible assets are amortized on a straight-line basis over 14 years. f. Research and Development - Research and development costs are expensed as incurred. g. Concentration of Credit Risk - The Company's product is sold throughout the United States principally to distributors and wholesalers in the pharmaceutical industry. The Company performs ongoing credit evaluation of its customers' financial condition and generally requires no collateral from its customers. h. Use of Estimates in the Preparation of Financial Statements - The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates. i. New Accounting Pronouncements - In June 1998, the Financial Accounting Standards Board issued SFAS No. 133, "Accounting for Derivative Instruments and Hedging Activities." This statement establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. The provisions of this statement are effective for all fiscal quarters of all fiscal years beginning after June 15, 2000. Management is in the process of evaluating the impact of this statement on the consolidated financial statements. 3. INVENTORIES Inventories consist of the following at December 31, 1999 and 1998: 1999 1998 Raw materials $ 1,175,000 $ 1,853,000 Work in process 35,000 - Finished goods 762,000 497,000 -------- ------- Total $ 1,972,000 $ 2,350,000 ============ =========== 4. PROPERTY AND EQUIPMENT Property and equipment consists of the following at December 31, 1999 and 1998: 1999 1998 Machinery and equipment $ 1,124,000 $ 1,216,000 Furniture and fixtures 62,000 90,000 ------- ------ 1,186,000 1,306,000 Less accumulated depreciation 750,000 792,000 -------- ------- Property and equipment - net $ 436,000 $ 514,000 ========== =========

5. SUB-LICENSE OF RIGHTS On February 9, 1988, the Company granted a sub-license to its exclusive right and license to use its technology to Draxis Health Inc. (formerly Deprenyl Research Limited) to commercialize certain drugs in Canada for 15 years. The Company receives a royalty of 11% of Draxis Health Inc.'s net sales over the license period. Royalty income, net of related royalty expense payable to Chinoin, included in other income for the years ended December 31, 1999, 1998 and 1997 was approximately $51,000, $97,000 and $261,000, respectively. 6. INTANGIBLE ASSETS Intangible assets primarily represent the cost of a modification to the terms of the Chinoin Agreement, less accumulated amortization of $2,025,000, and $1,832,000 at December 31, 1999 and 1998, respectively. 7. CO-PROMOTIONAL AGREEMENT The Company entered into an agreement with CoCensys, Inc. ("CoCensys") for the promotion of Elderpryl in 1996. The agreement had an initial term of two years. Under the terms of the original agreement, the Company would have compensated CoCensys, based on a predetermined formula that considered both the number of new prescriptions written and the net sales dollars achieved in each quarter. During 1996 and 1997, the agreement was modified with respect to term, new prescriptions and detail calls. During 1997, CoCensys was acquired by Watson. The Company paid Watson $2,050,000 and $4,700,000 for the promotion and marketing of Elderpryl during 1999 and 1998, respectively. During 1997 the Company paid $3,800,000 pursuant to these agreements with CoCensys. The marketing agreement with Watson was terminated June 30, 1999. 8. OTHER INCOME In November 1994, the Company prevailed in litigation it brought against foreign defendants who were selling and marketing chemical compounds similar to Eldepryl without FDA approval. In late 1997, a final judgment was rendered by the United States Federal District Court. In November 1997, the Company received and recorded as other income approximately $1,225,000 for settlement of the litigation and reimbursement of related costs. During November 1997, the Company sold its research and development facility and related equipment with a net book value of approximately $3,422,000 for $3,000,000. The resulting loss of $422,000 was recorded as a reduction in other income in 1997.

9. INCOME TAXES The income tax provision consists of the following for the years ended December 31, 1999, 1998 and 1997: 1999 1998 1997 Current (benefit) tax expense: Federal $ (1,651,000) $ 7,800,000 $ 10,283,000 State (4,000) 1,603,000 2,549,000 Foreign -- -- 100,000 (1,655,000) 9,403,000 12,932,000 Deferred tax expense (benefit): Federal 247,000 211,000 (7,000) State 13,000 21,000 (1,000) 260,000 232,000 (8,000) Total provision for income taxes $ (1,395,000) $ 9,635,000 $ 12,924,000 Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The tax effects of significant items comprising the Company's deferred taxes (which are included in "Other Assets" in the consolidated balance sheet) at December 31, 1999 and 1998 are as follows: 1999 1998 Deferred tax assets: Chargeback and rebate allowances $ 391,000 $ 510,000 Deferred compensation 105,000 229,000 Other 124,000 100,000 -------- ------- 620,000 839,000 Deferred tax liabilities - different methods of accounting between financial and income tax reporting for depreciation and amortization 284,000 243,000 -------- ------- Net deferred tax assets $ 336,000 $ 596,000 =========== =========

The statutory federal income tax rate is reconciled to the effective tax rate as follows for the years ended December 31, 1999, 1998 and 1997: 1999 1998 1997 Tax at statutory rate (35.0)% 35.0 % 35.0 % State income tax (net of federal benefit) -- 3.6 3.8 Tax credit reductions (credits) 10.6 (6.2) (7.9) Tollgate tax -- 3.1 3.4 Other (2.3) 4.2 0.7 Effective tax rate (26.7)% 39.7 % 35.0 % Tax credits result principally from operations in Puerto Rico. See Note 13. 10. RELATED PARTY TRANSACTIONS The Company had certain transactions with one or both of its owners as detailed below for the years ended December 31, 1999, 1998 and 1997: 1999 1998 1997 Management fees $ 929,000 $2,167,000 $3,348,000 Marketing and advertising 2,050,000 4,714,000 775,000 Research and development 821,000 232,000 90,000 Inventory handling and distribution fees 283,000 524,000 465,000 Rent - equipment and facilities 54,000 14,000 640,000 11. SIGNIFICANT CUSTOMERS The Company had sales to certain customers which individually exceeded 10% of sales. In 1999 sales to four major customers were $4,256,000, $2,351,000, $2,308,500 and $2,242,000, respectively. In 1998 sales to three major customers were $8,983,000, $8,013,000 and $6,953,000, respectively. In 1997 sales to five major customers were $15,878,000, $13,498,000, $11,427,000, $8,658,000 and $7,746,000, respectively. 12. EMPLOYEE BENEFIT PLANS Effective January 1, 1998, the Company created a defined contribution profit sharing plan covering substantially all employees. Contributions are made at the discretion of the Board of Directors. The defined contribution profit sharing plan in effect prior to 1998 was terminated as of December 31, 1997. Additionally, during 1994, the Company initiated a deferred compensation plan for certain key employees which was terminated during 1997. During 1999, 1998 and 1997, the Company recorded expense of $120,000, $120,000 and $-0-, respectively, under these plans.

13. CONTINGENCIES IRS In connection with an examination of the Company's Federal tax returns for the three years ended December 31, 1995, representatives of the Internal Revenue Service, in June 1997, issued to the Company a report that contains proposed adjustments to the Company's use of tax credits under the Internal Revenue Code section 936. Under the proposed adjustments, the Company could be subject to approximately $34 million of additional income tax and interest charges that have not been accrued at December 31, 1999. The increase of $20 million of potential additional income tax over the prior year is primarily attributable to losses incurred in the current year and the anticipation of losses in the near future which would not allow the Company to utilize Puerto Rican tax credits. In September of 1999, the Company's case was transferred from the appellate level back to the agent level for further development of the facts. Management believes that the Company has met all the requirements to qualify for the tax credits available under Internal Revenue Code section 936, and intends to vigorously defend its position on this matter. FoxMeyer In 1998, the Company was named as a defendant in a compliant filed by the trustee to the bankruptcy estates of FoxMeyer Corporation and its related entities in the U.S. Bankruptcy Court for the District of Delaware. The compliant alleged that the Company received preferential payments of approximately $3.4 million from the bankruptcy estates and seeks reimbursement from the Company of such amounts. The Company filed an answer to the complaint denying the allegations. In 1999, a settlement agreement was reached with the Trustee. There was no material effect to the Company as a result of this settlement. * * * * * *