- ------------------------------------------------------------------------------
                 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, D.C. 20549
                                    FORM 10-Q

          --------------------------------------------------------------


               [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                      OF THE SECURITIES EXCHANGE ACT OF 1934

                   For the quarterly period ended June 30, 1998
                                        OR

              [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                      OR THE SECURITIES EXCHANGE ACT OF 1934
                        For the transition period from to

                          Commission file number 1-9114

                             MYLAN LABORATORIES INC.
              (Exact Name of registrant as specified in its charter)

                  Pennsylvania                           25-1211621
         (State or other jurisdiction of               (I.R.S. Employer
          incorporation or organization)                Identification No.)

                  130 Seventh Street
             1030 Century Building
            Pittsburgh, Pennsylvania                   15222
   (Address of principal executive offices)          (Zip Code)

                               412-232-0100
           (Registrant's telephone number, including area code)

                              Not Applicable
     (Former name, former address and former fiscal year, if changed
          since last report)

Indicate by check mark 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  twelve 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 the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date

                                                       Outstanding at
       Class of Common Stock                            July 28, 1998
          $.50 par value                                 122,389,664
- -------------------------------------------------------------------------------








                  MYLAN LABORATORIES INC. AND SUBSIDIARIES


                                    INDEX




                                                                     Page
                                                                     Number
                                                                    --------

PART I. FINANCIAL INFORMATION

        ITEM 1:  Financial Statements

        Consolidated Balance Sheets - June 30, 1998
           and March 31, 1998                                      2A and 2B

        Consolidated Statements of Earnings - Three
      Months Ended June 30, 1998 and 1997                              3

        Consolidated Statements of Cash Flows - Three
           Months Ended June 30, 1998 and 1997                         4

        Notes to Consolidated Financial Statements -
           Three Months Ended June 30, 1998                       5, 6 and 7

        ITEM 2:       Management's Discussion and Analysis of
           Financial Condition and Results of
           Operations                                             8, 9 and 10


PART II. OTHER INFORMATION                                            11


                                                                  






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS

                                     ASSETS



                                                         June 30,      March 31,
                                                             1998           1998
                                                        Unaudited        Audited
Current Assets:
    Cash and cash equivalents                        $139,111,000   $103,756,000
    Marketable securities                              17,979,000     20,967,000
    Accounts receivable - net                         137,229,000    136,864,000
    Inventories:
        Raw materials                                  66,358,000     63,308,000
        Work in process                                27,525,000     27,858,000
        Finished goods                                 56,149,000     54,875,000
                                                     ------------   ------------
                                                      150,032,000    146,041,000
    Deferred income tax benefit                         9,559,000      7,845,000
  Prepaid and refundable income tax                     7,890,000      7,946,000
    Other current assets                                6,198,000      6,679,000
                                                     ------------   ------------
           Total Current Assets                       467,998,000    430,098,000


Property, Plant and Equipment - at cost               231,749,000    226,319,000
    Less accumulated depreciation                      78,542,000     74,907,000
                                                     ------------   ------------
                                                      153,207,000    151,412,000
Marketable Securities - non-current                    21,131,000     20,974,000
Investment in and Advances to Somerset                 31,801,000     29,721,000
Intangible Assets-net of accumulated amortization     126,855,000    128,745,000
Other Assets                                           89,907,000     86,803,000
                                                     ------------   ------------
Total Assets                                         $890,899,000   $847,753,000
                                                     ============   ============


                 See Notes to Consolidated Financial Statements
                                      -2A-

     





                      LIABILITIES AND SHAREH0LDERS' EQUITY


                                                      June 30,        March 31,
                                                          1998             1998
                                                     Unaudited          Audited
Current Liabilities:
    Trade accounts payable                        $ 18,817,000     $ 15,957,000
    Current portion of long-term obligations         9,118,000        8,477,000
    Income taxes payable                            18,376,000        5,377,000
    Other current liabilities                       35,069,000       36,635,000
    Cash dividend payable                            4,907,000        4,900,000
                                                  ------------     ------------
           Total Current Liabilities                86,287,000       71,346,000
Long-Term Obligations                               26,417,000       26,218,000
Deferred Income Tax Liability                        3,490,000        5,724,000
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  123,216,807  shares at June 30, 1998 and  123,050,172  shares at
        March 31,
        1998                                        61,609,000       61,525,000
    Additional paid-in capital                      94,778,000       92,405,000
    Retained earnings                              624,134,000      594,847,000
    Accumulated other comprehensive income              78,000        1,570,000
                                                  ------------
                                                   780,599,000      750,347,000
    Less Treasury stock - at cost, 850,328
        shares at June 30, 1998 and 849,858
        shares at March 31, 1998                     5,894,000        5,882,000
                                                  ------------     ------------
Net Worth                                          774,705,000      744,465,000
                                                  ------------     ------------
Total Liabilities and Shareholders' Equity        $890,899,000     $847,753,000
                                                  ============     ============




                 See Notes to Consolidated Financial Statements

                                                                  -2B-

                                                                        





                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                       CONSOLIDATED STATEMENTS OF EARNINGS
                FOR THE THREE MONTHS ENDED JUNE 30, 1998 AND 1997
                                    UNAUDITED


                                                 1998          1997
                                                 ----          ----
NET SALES                                $166,718,000  $109,188,000
COST AND EXPENSES:
    Cost of Sales                          81,564,000    61,379,000
    Research and Development               14,084,000    11,691,000
    Selling and Administrative             25,009,000    19,739,000
                                         ------------  ------------
                                          120,657,000    92,809,000
EQUITY IN EARNINGS OF SOMERSET              2,350,000     4,136,000
OTHER INCOME                                4,034,000     1,826,000
                                         ------------  ------------
EARNINGS BEFORE INCOME TAXES               52,445,000    22,341,000
INCOME TAX RATE                                   35%           26%
INCOME TAXES                               18,263,000     5,743,000
                                         ------------  ------------
NET EARNINGS                             $ 34,182,000  $ 16,598,000
                                         ============  ============

EARNINGS PER SHARE:
  Basic                                  $        .28  $        .14
                                         ============  ============
  Diluted                                $        .28  $        .13
                                         ============  ============
Weighted Average Common Shares:
  Basic                                   122,295,000   122,065,000
                                         ============  ============
  Diluted                                 124,078,000   123,039,000
                                         ============  ============

The Company has paid regular  quarterly  cash  dividends of $.04 per share since
October 1995.












                 See Notes to Consolidated Financial Statements
                                       -3-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                FOR THE THREE MONTHS ENDED JUNE 30, 1998 AND 1997

                                    UNAUDITED

                                                         1998          1997
                                                         ----          ----
CASH FLOWS FROM OPERATING ACTIVITIES
    Net Earnings                                    $ 34,182,000  $ 16,598,000
    Adjustments to reconcile net earnings to net
        cash provided from operating activities:
           Depreciation and amortization               5,528,000     5,146,000
           Deferred income taxes                      (3,145,000)      871,000
           Equity in the earnings of Somerset         (2,350,000)   (4,136,000)
           Cash received from Somerset                   270,000     4,556,000
           Allowances on accounts receivable           1,042,000    (4,199,000)
           Other non-cash items                         (250,000)    1,538,000
        Changes in operating assets and liabilities:
           Accounts receivable                        (1,407,000)   12,223,000
           Inventories                                (4,018,000)  (20,396,000)
           Trade accounts payable                      2,860,000    (1,183,000)
           Income taxes payable                       13,055,000    (6,911,000)
           Other operating assets and liabilities     (1,084,000)   (6,526,000)
                                                    ------------- -------------
Net cash provided from(used in)operating activities    44,683,000   (2,419,000)
CASH FLOWS FROM INVESTING ACTIVITIES
    Additions to property, plant and equipment        (5,430,000)   (6,327,000)
    Increase in intangible and other assets           (1,516,000)   (4,307,000)
    Proceeds from investment securities                6,318,000     3,005,000
    Purchase of investment securities                 (5,782,000)   (2,303,000)
                                                    ------------- -------------
Net cash used in investing activities                 (6,410,000)   (9,932,000)
CASH FLOWS FROM FINANCING ACTIVITIES
    Cash dividend paid                                (4,888,000)   (4,882,000)
    Payments on long-term obligations                    (15,000)       (8,000)
    Proceeds from exercise of stock options            1,985,000        80,000
                                                    ------------- ------------
Net cash used in financing activities                 (2,918,000)   (4,810,000)
                                                    ------------- -------------

Net Increase(Decrease) in Cash and Cash Equivalents    35,355,000  (17,161,000)
Cash and Cash Equivalents - Beginning of Period      103,756,000   126,156,000
                                                    ------------- ------------

Cash and Cash Equivalents - End of Period           $139,111,000  $108,995,000
                                                    ============- ============

CASH PAID DURING THE PERIOD FOR:
    Interest                                        $      4,000  $      5,000
    Income Taxes                                    $  8,354,000  $ 15,698,000

                 See Notes to Consolidated Financial Statements
                                       -4-





                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                            THREE MONTH PERIOD ENDED
                                  JUNE 30, 1998

                                    Unaudited

A.    In the opinion of management, the accompanying unaudited financial
      statements contain all adjustments (consisting of only normal recurring
      accruals) necessary to present fairly the financial position of the
      Company as of June 30, 1998 and March 31, 1998 together with the results
      of operations and cash flows for the interim periods ended June 30, 1998
      and 1997.  The consolidated results of operations for the three months
      ended June 30, 1998 and 1997 are not necessarily indicative of the results
      to be expected for the full year.

B.    These interim financial  statements should be read in conjunction with the
      consolidated  financial statements and notes thereto in the Company's 1998
      Annual Report and Report on Form 10-K.

C.    Equity in Earnings of Somerset  includes the  Company's 50% portion of the
      net  earnings  of  Somerset  Pharmaceuticals  Inc.  ("Somerset"),  certain
      management fees and  amortization of intangible  assets resulting from the
      acquisition of Somerset. Such intangible assets are being amortized over a
      15 year period using the straight line method.

      Condensed unaudited financial information of Somerset for the three month
      periods ended June 30, 1998 and 1997 are as follows: (in thousands)


                                               June 30,            June 30,
                                                 1998                1997

        Net Sales                               $12,630            $17,273
        Costs and Expenses                      (4,902)             (5,247)
        Income Taxes                            (3,175)             (4,155)
                                               -------              ------
        Net Earnings                            $ 4,553            $ 7,871
                                                =======            =======

      The above  information  represents 100% of Somerset's  operations of which
      the Company has a 50% interest.

D.    Under the terms of the Company's  supply and  distribution  agreement with
      Genpharm Inc.  ("Genpharm")  relating to sales of  ranitidine  HCL tablets
      ("ranitidine")  the  Company  is to share  in any  benefit  that  Genpharm
      receives from its agreement  with  Novopharm  Limited  ("Novopharm").  The
      Company  recognized  revenue of $26,822,000 in the quarter ended September
      30, 1997 in connection with the Genpharm Novopharm  arrangement.  However,
      as a result of a dispute between Genpharm and Novopharm relating to

                                     -5-

                                              




                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                            THREE MONTH PERIOD ENDED
                                  JUNE 30, 1998

                                    Unaudited



      contract  interpretation,  the Company has not  recognized  any additional
      revenue.  Based upon an independent audit, Genpharm has recently initiated
      suit against Novopharm to resolve and collect any additional funds due.

E.    As a result of price increases initiated by the Company during the past
      six months, the Company has received notification from the Federal Trade
      Commission that it is investigating whether the Company and others have
      engaged in activities restricting competition in the manufacture or sale
      of pharmaceutical ingredients or products.  The Company is cooperating
      fully with the review and is providing all the information requested by
      the Commission.  As with all governmental inquiries the process is
      inherently uncertain.  However, management believes that the Company has
      acted properly and in full compliance with the Federal Trade Commission
      Act and all other laws and regulations governing trade and competition in
      the marketplace, and that the ultimate resolution of this matter will not
      have a material adverse effect on the Company's financial position or
      results of operations.

F.    For the quarter ended June 30, 1998, the Company adopted Statement of
      Financial Accounting Standards No. 130, "Reporting Comprehensive Income"
      ("SFAS 130").  SFAS 130 establishes new rules for recording and disclosing
      comprehensive income and its components in the financial statements.
      Comprehensive income includes all changes in equity except those resulting
      from investments by owners and distributions to owners.  The Company's
      comprehensive income is compromised of net earnings and the unrealized
      gain or loss on marketable securities net of tax.  The adoption of SFAS
      130 had no effect on the Company's consolidated results of operations,
      financial position or cash flows.  The components of comprehensive income
      during the three months ended June 30, 1998 and 1997 were: (in thousands)


                                         Three Months Ended
                                                une 30,

                                         1998               1997
                                         ----               ----
Net earnings                            $34,182            $16,598
Unrealized (loss)gain on
  marketable securities, net of tax      (1,492)             1,091
Comprehensive Income                    $32,690            $17,689
                                        =======            =======
                                                                   
                                        -6-

                                                             





                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                            THREE MONTH PERIOD ENDED
                                  JUNE 30, 1998

                                    Unaudited



G.    On June 24, 1998 the Company entered into a definitive agreement to
      acquire Penederm Inc. of Foster City, California.  Penederm develops and
      markets patented topical prescription products.

      The transaction,  which is expected to be completed by November 1998, will
      be  accounted  for under the  purchase  method of  accounting.  Payment of
      approximately  $205,000,000  (based on the closing  price of the Company's
      common  stock on June 23, 1998) will be made through the issuance of newly
      registered  common stock of the  Company.  The  transaction  is subject to
      various  conditions and regulatory  requirements  and no assurances can be
      given that it will be consummated upon the terms proposed, if at all.

H.    In August 1997, Key Pharmaceuticals filed suit in the United States
      District Court for the Western District of Pennsylvania against the
      Company and certain subsidiaries alleging patent infringement relating to
      the marketing of its nitroglycerin transdermal system.  The Company
      received FDA approval for its nitroglycerin transdermal system in
      September 1996 and immediately began marketing the product.  The relief
      sought includes a preliminary and permanent injunction, treble damages
      along with interest and attorney's fees and expenses. Key Pharmaceuticals'
      request for a preliminary injunction has been denied.  The Company
      believes the suit is without merit and intends to vigorously defend its
      position.


                                             -7-




                         PART 1 - FINANCIAL INFORMATION

                  ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS




Results of Operations

     Net earnings for the quarter ended June 30, 1998 were $34,182,000,
representing a 106% increase over the prior year's first quarter.  Diluted
earnings  per share were $.28 for the quarter  ended June 30,  1998  compared to
$.13 for the prior year's first quarter. Net sales increased 53% to $166,718,000
and gross  profit  dollars  increased by 78% to  $85,154,000.  Gross profit as a
percent of net sales was 51% for the  current  quarter  compared  to 44% for the
quarter ended June 30, 1997.

     While the  improvement  from the prior year's  first  quarter net sales and
gross profit was primarily  attributable  to the Company's core generic  product
line, the branded and unit dose product lines also realized  marked growth.  Net
sales for Bertek Pharmaceuticals Inc., the Company's branded division, increased
by almost 30% from a year ago and unit dose sales increased by almost 40%.

     The most  significant  improvements  came from the  Company's  core generic
product line as a result of 1) higher  overall  shipment  volumes  (1.91 billion
units  versus  1.57  billion  units for the same period in the prior  year),  2)
thirteen product line additions since June 30, 1997, including four new products
additions and the  reintroduction  of glyburide since March 31, 1998, and 3) the
favorable  impact of selective  price increases on fourteen  products,  seven of
which were implemented in the last half of fiscal 1998 and seven more which were
implemented during the June 1998 quarter.

     The  decision  to  increase  prices  was made in light of  continued  price
deterioration  and increased  costs involved in bringing new products to market,
primarily  resulting  from legal  challenges  under the  Hatch-Waxman  Act.  The
products  selected for increase  and the amount of the  increases  were based on
numerous factors including, product line contribution, market size, competition,
raw material  suppliers and  manufacturing  capacity.  The Company has chosen to
increase  prices  in  order to  ensure  the  Company's  full  line of  low-cost,
effective,  quality  generic  alternatives  continues  to be  available  to  the
American public.

     While these price increases have favorably impacted earnings in the current
quarter, the extent if any in future quarters depends upon several factors, some
of which are beyond the  Company's  control.  During the quarter  ended June 30,
1998, the Company received notice that the Federal Trade Commission (the "FTC"),
in light of the price  increases,  was  investigating  whether  the  Company and
others had engaged in activities  restricting  competition in the manufacture or
sale of pharmaceutical ingredients or products. The Company is cooperating fully
with this  investigation  and is supplying the documents  requested.  Management
believes  that the Company has acted  properly and in full  compliance  with the
Federal Trade Commission Act and all other laws and regulations  governing trade
and competition in the

                                       -8-   




marktetplace.  The Company fully intends to (1) assert its positions  vigorously
with the FTC, (2) fulfill its  contractual  obligations  under  existing  supply
agreements  for  pharmaceutical  ingredients,  (3) maintain its current  pricing
levels for products  for which  prices have  recently  been  increased,  and (4)
continue  to  examine  other  products  to  determine  if  price  increases  are
appropriate.  The Company  believes the ultimate  resolution of this matter will
not have a  material  adverse  effect on the  Company's  financial  position  or
results of operations.

      Research and development  expenses were  $14,084,000 for the quarter ended
June 30, 1998,  which  represents a 20% increase  over the first  quarter of the
prior year. Increased spending was realized in all areas of research:
transdermal, innovative compounds and generic.

     The Company is currently in litigation  with respect to its previous equity
and funding investments in VivoRx, Inc. ("VI") and VivoRx Diabetes, Inc. ("VDI")
based upon certain  improprieties of which the Company was made aware during the
quarter  ended June 30, 1998.  The Company is continuing to evaluate its options
regarding the future funding of certain diabetes research by VDI pursuant to its
Exclusive License Agreement with VDI.

      Selling and administrative expenses were $25,009,000 for the quarter ended
June 30, 1998,  which  represents a 27% increase  over the first  quarter of the
prior year.  Reflected as a percentage of net sales,  these expenses amounted to
15% this quarter and 18% for the quarter  ended June 30, 1997.  The  significant
dollar change from the June 1997 quarter is related  primarily to 1) advertising
and promotions including shelf-stocking programs on generic products which began
in the September 1997 quarter, 2) higher legal fees due to patent challenges and
3) payroll and  related  expenses,  principally  incentive  programs,  which are
higher than last year given the improvements in operating results.

      Investment  and other income was $4,034,000 for the quarter ended June 30,
1998,  an  increase of  $2,208,000  over the prior  year's  first  quarter.  The
increase  is  primarily  attributable  to the  increase  in cash and short  term
investments and the earnings related to pooled asset funds.

      The increase in the  effective  tax rate to 35% for the quarter ended June
30, 1998 from 26% at June 30, 1997 is primarily  attributable to the increase in
domestic earnings versus Puerto Rico earnings.  The Company expects the tax rate
to remain relatively unchanged through fiscal 1999.

Liquidity and Capital Resources and Financial Condition

      Working  capital   increased  from  $358,752,000  at  March  31,  1998  to
$381,711,000  at  June  30,  1998.  The  ratio  of  current  assets  to  current
liabilities  was 5.4 to 1 at June 30,  1998  compared  to 6.0 to 1 at March  31,
1998.





                                        -9-





     Net cash provided from operating activities was $44,683,000 for the three
months ended June 30, 1998 compared to net cash used in operating  activities of
$2,419,000  for the three months ended June 30, 1997.  This  significant  change
primarily  resulted from improved  operating  results in the current year period
and the  settlement  of the Internal  Revenue  Service audit and the increase in
inventory levels to meet the increase in demand for the Company's products
in the prior year period.

Proposed Penederm Merger

      On June 24, 1998, the Company entered into an Agreement and Plan of Merger
(the  "Merger  Agreement")  with  Penederm  Incorporated  ("Penederm")  and  the
Company's  wholly-owned  subsidiary,  MLI ("MLI"). The Merger Agreement provides
for the merger of MLI into  Penederm,  with Penederm to survive the merger ("the
Merger")  as a  wholly-owned  subsidiary  of  the  Company.  If  the  Merger  is
consummated in accordance with the terms set forth in the Merger Agreement, each
share of common stock of Penederm  will be  exchanged  for 0.68 shares of common
stock of the  Company.  Based upon the  closing  market  price of the  Company's
common  stock on June 23,  1998,  this  transaction  is valued at  approximately
$205,000,000.  It is  anticipated  that a portion of the purchase  price will be
allocated (upon receipt of a final independent valuation) to in-process research
and  development  and  accordingly  will  result  in a charge to  earnings  upon
consummation of the transaction.  The Merger,  which is expected to close in the
third quarter, is subject to the satisfaction of various conditions,  including,
without limitation,  that Penederm's stockholders approve the transaction,  that
any  required   regulatory   consents  or  approvals  are  received,   that  the
registration statement for the registration of the Company's shares to be issued
to the  Penederm  stockholders  is  declared  effective  by the  Securities  and
Exchange  Commission  and that  there are no  material  adverse  changes  in the
business or affairs of either party through the closing date.

Forward Looking Statements

      The  statements  set forth in this Item 2 under  "Results  of  Operations"
concerning  the  manner in which  the  Company  intends  to  respond  to the FTC
investigation  and to conduct its  operations in the face of this  investigation
are forward-looking  statements.  The Company may be unable to realize the plans
and objectives  described therein due to various important  factors,  including,
but not limited to, the factors described under "Forward Looking  Statements" in
Item 7 of the Company's  Annual Report on Form 10-K for the year ended March 31,
1998,  or if the FTC  concludes,  on the  basis of its  investigation,  that the
Company has acted improperly.

                                      -10-

PART II. OTHER INFORMATION







      Item 6. Exhibits and Reports on Form 8-K

      (a)      2.1 Agreement and Plan of Merger dated June 24, 1998 by and among
               the Company,  Penederm  Incorporated  and MLI Acquisition  Corp.,
               included as Exhibit 2.1 to the Company's  Current  Report on Form
               8-K filed on June 30, 1998 and incorporated herein by reference.

               10.1 Stock  Option  Agreement  dated June 24,  1998  between  the
               Company and  Penederm  Incorporated,  included as Exhibit 99.1 to
               the Company's  Current  Report on Form 8-K filed on June 30, 1998
               and incorporated herein by reference.

               10.2  Voting  Agreement  dated June 24,  1998 among the  Company,
               Gerald and Marcia  Weinstein,  David  Collins,  Harvey S.  Sadow,
               Lloyd Malchow,  Robert R. Allnut,  William  Bergman and Joseph E.
               Smith,  included as Exhibit 99.2 to the Company's  Current Report
               on Form 8-K  filed on June 30,  1998 and  incorporated  herein by
               reference.

               10.3 Alternate  Voting  Agreement dated June 24, 1998 between the
               Company and Prince Venture Partners III L.P., included as Exhibit
               99.3 to the  Company's  Current  Report on Form 8-K filed on June
               30, 1998 and incorporated herein by reference.

               27.1 Financial Data Schedule.

      (b)      Reports on Form 8-K - On June 30, 1998 the Company filed a report
               on Form 8-K dated June 24, 1998 covering Item 5 thereof regarding
               the announcement of the acquisition of Penederm Inc.

                                   SIGNATURES

      Pursuant to the  requirements 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.

                                          Mylan Laboratories Inc.
                                               (Registrant)



DATE 7/4/98               /s/ Milan Puskar
     -----------------    -------------------------------------------
                          Milan Puskar
                          Chairman of the Board, Chief
                          Executive Officer and President
                          (Principal executive officer)




DATE 8/4/98              /s/ Donald Schilling
     -----------------   --------------------------------------------
                         Donald C. Schilling
                         Vice President of Corporate Finance
                          (Principal financial officer)

                               -11-

 


5 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 June 30, 1998 and the Consolidated Statement of Earnings for the three months ended June 30, 1998 and is qualified in its entirety by reference to such financial statements. 0000069499 none 3-MOS MAR-31-1999 JUN-30-1998 139,111,000 17,979,000 112,802,000 24,427,000 150,032,000 467,998,000 231,749,000 78,542,000 890,899,000 86,287,000 22,327,000 0 0 61,609,000 78,000 890,899,000 166,718,000 166,718,000 81,564,000 81,564,000 39,093,000 151,000 416,000 52,445,000 18,263,000 34,182,000 0 0 0 34,182,000 .28 .28