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


                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 December 31, 1997
                                                 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                                 February 9, 1998
    ---------------------                                 ----------------
       $.50 par value                                       122,149,289









                    MYLAN LABORATORIES INC. AND SUBSIDIARIES


                                      INDEX                   




                                                                     Page
                                                                    Number
                                                                  -----------


PART I. FINANCIAL INFORMATION

        ITEM 1: Financial Statements

        Consolidated Balance Sheets - December 31, 1997
           and March 31, 1997                                      2A and 2B

        Consolidated Statements of Earnings - Three and
           Nine Months Ended December 31, 1997 and 1996                3

        Consolidated Statements of Cash Flows - Nine
           Months Ended December 31, 1997 and 1996                     4

        Notes to Consolidated Financial Statements -
           Nine Months Ended December 31, 1997                    5 through 7

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


PART II. OTHER INFORMATION                                            10








                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS

                                     ASSETS



                                                   December 31,      March 31,
                                                           1997           1997
                                                      Unaudited        Audited
Current Assets:
    Cash and cash equivalents                      $115,130,000   $126,156,000
    Marketable securities                            18,492,000     13,876,000
    Accounts receivable - net                       108,044,000    115,303,000
    Inventories:
        Raw materials                                67,783,000     51,796,000
        Work in process                              23,531,000     20,843,000
        Finished goods                               44,287,000     28,251,000
                                                   ------------   ------------
                                                    135,601,000    100,890,000
  Prepaid refundable income taxes                     4,887,000              -
    Deferred income tax benefit                       6,778,000     13,532,000
    Other current assets                             10,029,000      9,263,000
                                                   ------------   ------------
           Total Current Assets                     398,961,000    379,020,000


Property, Plant and Equipment - at cost             217,169,000    197,466,000
    Less accumulated depreciation                    71,329,000     61,637,000
                                                   ------------   ------------
                                                    145,840,000    135,829,000
Deferred Income Tax Benefit                           2,625,000              -
Marketable Securities, non-current                   21,907,000     23,668,000
Investment in and Advances to Somerset               28,178,000     25,113,000
Intangible Assets-net of accumulated amortization   131,267,000    137,062,000
Other Assets                                         86,205,000     76,888,000
                                                   ------------   ------------
Total Assets                                       $814,983,000   $777,580,000
                                                   ============   ============


                 See Notes to Consolidated Financial Statements
                                      -2A-






                      LIABILITIES AND SHAREH0LDERS' EQUITY


                                                 December 31,       March 31,
                                                         1997            1997
                                                    Unaudited         Audited
Current Liabilities:
    Trade accounts payable                       $ 14,996,000    $ 18,039,000
    Current portion of long-term obligations       16,336,000      17,453,000
    Income taxes payable                            7,701,000      13,795,000
    Other current liabilities                      22,880,000      24,566,000
    Cash dividend payable                           4,896,000       4,893,000
                                                 ------------    ------------
           Total Current Liabilities               66,809,000      78,746,000
Long-Term Obligations                              31,996,000      32,593,000
Deferred Income Tax Liability                               -       6,501,000
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 123,022,547 shares at 
        December 31, 1997 and 122,814,956 
        shares at March 31, 1997                   61,511,000      61,407,000
    Additional paid-in capital                     92,093,000      89,262,000
    Retained earnings                             568,069,000     513,750,000
    Net unrealized gain (loss) on investments         646,000       (947,000)
                                                 ------------
                                                  722,319,000     663,472,000
    Less Treasury stock - at cost, 887,358
        shares at December 31, 1997 and
        752,950 shares at March 31, 1997            6,141,000       3,732,000
                                                 ------------    ------------

Net Worth                                         716,178,000     659,740,000
                                                 ------------    ------------
Total Liabilities and Shareholders' Equity       $814,983,000    $777,580,000
                                                 ============    ============






                 See Notes to Consolidated Financial Statements
                                      -2B-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                       CONSOLIDATED STATEMENTS OF EARNINGS
                                    UNAUDITED




                                    Three Months Ended December 31,          Nine Months Ended December 31,
                                    -------------------------------          ------------------------------
                                                                                           
                                                                                                          
                                           1997           1996                    1997          1996      
                                                                                                          
                                           ----           ----                    ----          ----      
REVENUES:                                                                                                 
  Net Sales                            $129,517,000   $113,981,000            $365,838,000  $321,505,000  
  Other Revenues                            -              -                    26,822,000       -        
                                       ------------   ------------            ------------  ------        
Total Revenues                          129,517,000    113,981,000             392,660,000   321,505,000  
COST AND EXPENSES:                                                                                        
                                                                                                          
  Cost of Sales                          75,077,000     66,729,000             207,657,000   186,344,000  
    Research and Development              7,891,000     10,775,000              31,707,000    31,561,000  
    Selling and Administrative           21,239,000     19,566,000              72,460,000    60,282,000  
                                       ------------   ------------            ------------  ------------  
                                        104,207,000     97,070,000             311,824,000   278,187,000  
EQUITY IN EARNINGS OF SOMERSET            1,839,000      4,462,000               8,431,000    14,507,000  
OTHER INCOME                              3,923,000      2,505,000              10,186,000    10,266,000  
                                       ------------   ------------            ------------  ------------  
EARNINGS BEFORE INCOME TAXES             31,072,000     23,878,000              99,453,000    68,091,000  
INCOME TAX RATE                                 29%            24%                     31%           27%  
INCOME TAXES                              9,089,000      5,797,000              30,482,000    18,651,000  
                                       ------------   ------------            ------------  ------------  
NET EARNINGS                           $ 21,983,000   $ 18,081,000            $ 68,971,000  $ 49,440,000  
                                       ============   ============            ============  ============  
EARNINGS PER SHARE-basic and diluted   $        .18   $        .15            $        .57  $        .41  
                                       ============   ============            ============  ============  
WEIGHTED AVERAGE COMMON SHARES-basic    122,127,000    121,916,000             122,074,000   121,892,000  
                                       ============   ============            ============  ============  
                                                                                                          
                                                                             
  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 NINE MONTHS ENDED DECEMBER 31, 1997 AND 1996

                                                                UNAUDITED

                                                          1997         1996
                                                          ----         ----
CASH FLOWS FROM OPERATING ACTIVITIES
    Net Earnings                                     $ 68,971,000 $ 49,440,000
    Adjustments to reconcile net earnings to net
        cash provided from operating activities:
           Depreciation and amortization               15,983,000   13,896,000
           Deferred income tax benefit                 (2,243,000)    (312,000)
           Equity in the earnings of Somerset          (8,431,000) (14,507,000)
           Cash received from Somerset                  5,366,000   15,546,000
      Allowances on accounts receivable                 2,967,000     (805,000)
          Other non-cash items                           (401,000)     949,000
        Changes in operating assets and liabilities:
           Accounts receivable                          4,042,000  (23,934,000)
           Inventories                                (34,567,000)   3,223,000
           Trade accounts payable                      (3,043,000)  (2,758,000)
           Income taxes payable                       (11,316,000)  (1,767,000)
           Other operating assets and liabilities      (2,450,000)   7,125,000
                                                     -----------   -----------
Net cash provided from operating activities            34,878,000   46,096,000
CASH FLOWS FROM INVESTING ACTIVITIES
    Additions to property, plant and equipment        (19,703,000) (20,094,000)
    Increase in intangible and other assets            (6,760,000) (29,257,000)
    Proceeds from investment securities                12,086,000   17,078,000
    Purchase of investment securities                 (12,489,000) (20,952,000)
                                                      -----------  -----------
Net cash used in investing activities                 (26,866,000) (53,225,000)
CASH FLOWS FROM FINANCING ACTIVITIES
    Cash dividends paid                               (14,651,000) (14,617,000)
    Payments on long-term obligations                  (4,187,000)  (1,423,000)
  Repurchase of Common Stock                           (2,459,000)      -
    Proceeds from exercise of stock options             2,259,000      912,000
                                                      -----------  -----------
Net cash used in financing activities                 (19,038,000) (15,128,000)
                                                     -----------  -----------
Net Decrease in Cash and Cash Equivalents             (11,026,000) (22,257,000)
Cash and Cash Equivalents - Beginning of Period       126,156,000  176,980,000
                                                      -----------  -----------
Cash and Cash Equivalents - End of Period            $115,130,000 $154,723,000
                                                     ============ ============

CASH PAID DURING THE PERIOD FOR:
    Interest                                         $  1,187,000 $    433,000
    Income Taxes                                     $ 44,015,000 $ 20,728,000




                 See Notes to Consolidated Financial Statements
                                       -4-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                             NINE MONTH PERIOD ENDED
                                DECEMBER 31, 1997

                                    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 December 31, 1997 and March 31, 1997 together with the
      results of operations and cash flows for the interim periods ended
      December 31, 1997 and 1996.  The consolidated results of operations for
      the three and nine months ended December 31, 1997 and 1996 are not
      necessarily indicative of the results to be expected for the full year.
      Certain prior year amounts have been reclassified to conform to the
      current year presentation.

B.    These interim financial  statements should be read in conjunction with the
      consolidated  financial statements and notes thereto in the Company's 1997
      Annual  Report and Report on Form 10-K and  subsequent  filings  under the
      Securities Exchange Act of 1934.

C.    In  June  1997,  the  Company's  subsidiary  Mylan   Pharmaceuticals  Inc.
      ("Mylan") entered into an exclusive supply and distribution agreement with
      Genpharm Inc. ("Genpharm"),  a Canadian corporation,  relating to the sale
      of ranitidine HCL tablets ("ranitidine") in the United States.  Ranitidine
      is the generic version of Glaxo's Zantac(R).

      Under the terms of the  agreement  Mylan and  Genpharm  will  share in the
      combined profits resulting from the sale, by Mylan, of ranitidine  tablets
      manufactured  by either Mylan or  Genpharm.  In  addition,  the  agreement
      provides that Mylan shall be entitled to share in any benefit  received by
      Genpharm  as a result of Genpharm  entering  into any  agreement  with any
      third party,  which would affect  either the  marketing of  ranitidine  or
      Genpharm's ability to supply product to Mylan.

      Due to  unresolved  legal matters with Glaxo,  on July 31, 1997,  Genpharm
      entered into an agreement with Novopharm Limited, a Canadian  Corporation,
      and its United States subsidiary  Granutec Inc.  ("Novopharm").  Under the
      terms  of the  agreement  between  Genpharm  and  Novopharm,  Genpharm  is
      entitled  to  receive   compensation   from  Novopharm   predicated   upon
      Novopharm's  sales of the product  through  December 31, 1997 and a profit
      allocation  factor which is  significantly  reduced after the  exclusivity
      period. Under the terms of the agreement between Mylan and Genpharm, Mylan
      is  entitled  to share  in the  compensation  received  by  Genpharm  from
      Novopharm.



                                       -5-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                             NINE MONTH PERIOD ENDED
                                DECEMBER 31, 1997

                                    Unaudited



C.    (con't)  During  the  quarter  ended   September  30,  1997,  the  Company
      recognized  income  of  $26,822,000  related  to  the  Genpharm  Novopharm
      agreement.  Such income was recorded under the caption "Other Revenue" and
      increased  net  earnings  for the  quarter  ended  September  30,  1997 by
      approximately  $16,388,000  or $.13 per share.  The Company  collected the
      entire  receivable  recorded as of  September  30, 1997 during the quarter
      ended December 31, 1997.

      As a result  of a dispute  between  Genpharm  and  Novopharm  relating  to
      contract  interpretation,  the Company did not  recognize  any  additional
      revenue  during the quarter ended December 31, 1997. The amount of revenue
      to be  recognized  by the  Company in the future will be  determined  by a
      final  accounting  of the net sales and  expenses  incurred  by  Novopharm
      during the contract period and resolution of the dispute between  Genpharm
      and Novopharm.

D.    For  the  quarter  ended  December  31,  1997,  the  Company  adopted  the
      provisions  of Statement of Accounting  Standards  No. 128,  "Earnings per
      Share." The diluted  per-share  computations for the three and nine months
      ended  December 31, 1997 and 1996,  include  1,287,000  and  885,000,  and
      909,000  and  1,030,000,  of  potential  shares of common  stock  from the
      exercise of stock options, respectively.

E.    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.












                                       -6-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                             NINE MONTH PERIOD ENDED
                                DECEMBER 31, 1997

                                    Unaudited




E.    (con't) Condensed unaudited financial information of Somerset for the
      three and nine month periods ended December 31, 1997 and 1996 are as
      follows: (in thousands):


                              Three Months Ended     Nine Months Ended
                                 December 31,           December 31,
                              1997         1996      1997          1996
                              ----         ----      ----          ----

        Net Sales            $12,301      $19,685   $44,684       $76,052
        Costs and Expenses   (6,865)      (7,378)  (20,119)      (35,406)
        Income Taxes         (1,910)      (3,904)   (8,550)      (14,048)
                            -------      -------   -------       -------
        Net Earnings         $ 3,526      $ 8,403   $16,015       $26,598
                             =======      =======   =======       =======

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

      Somerset's marketing exclusivity for Eldepryl(R) 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
      Eldepryl(R) by the FDA. This has resulted in the decrease in sales and net
      earnings from 1996 to 1997.























                                       -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 three months ended December 31, 1997 were $21,983,000
($.18 per share)representing a 22% increase over the same quarter a year ago and
for the nine months then ended were  $68,971,000($.57  per share) representing a
40%  increase  over the same period a year ago.  Net earnings for the nine month
period ending December 31, 1997 includes  approximately  $.13 per share relating
to  revenue  recognized  by the  Company  as a  result  of the  sale of  generic
ranitidine by an unrelated party during the period(see note C)and was reduced by
approximately  $.07  per  share  as a  result  of  unusual  promotional  expense
associated with the launch of new generic products by the Company, primarily the
launch of generic ranitidine.

      In addition to the unusual items  identified  above, net earnings for both
the three and nine month periods ended December 31, 1997 were favorably impacted
by the addition of 14 products to the Company's generic product line since
December 31, 1996  including 11 during the current  fiscal year. The addition of
the new generic  products,  continued  volume  increases  throughout the generic
product line and selective price  increases have offset the price  deterioration
that  exists in the  generic  industry.  Generic  volume of almost  2.0  billion
tablets,  capsules  and patches  for the  quarter and 5.4 billion  year to date,
represents 15% growth over the same periods a year ago.

      As a result of the items identified in the previous  paragraph,  net sales
for the three and nine month periods ended  December 31, 1997 were a record high
$129,517,000 and $365,838,000, respectively. This represents a 14% increase over
the prior year comparable periods.  Gross profit(net sales less cost of sales)as
a percentage  of net sales  remained  relatively  unchanged  from the prior year
comparable periods.

      Due to the competitive nature of the generic pharmaceutical  industry, the
Company  has long  been  subject  to  price  deterioration  particularly  on new
products.  Historically the Company has offset price deterioration by increasing
volume and introducing new generic products.

      Recently,  branded pharmaceutical  companies have significantly  increased
legal procedures aimed at delaying the introduction of generic versions of their
compounds. While the vast majority of these legal challenges prove to be without
merit they have caused the Company to incur additional  research and development
costs and  significant  legal  costs.  More  importantly  they have  delayed the
introduction of several products.

     As a direct result of the increased  cost involved in bringing new products
to  market,  the  Company  has  selectively  increased  prices on certain of its
generic products.  Mylan had to choose between  discontinuing  some money-losing
items or  increasing  prices.  We have  chosen to increase  prices and  continue
providing low-cost, effective, quality generic alternatives.


                                       -8-







      Research and development expenditures for the three and nine month periods
ended December 31, 1997 were $7,891,000 and $31,707,000  compared to $10,775,000
and  $31,561,000  for the three and nine month periods ended  December 31, 1996.
The  decrease  in the  three  months  ended  December  31,  1997  was  primarily
attributable to the  Company's  funding to VivoRx Inc. being substantially
reduced due to various  federal grants  obtained by VivoRx Inc.  relating to its
diabetes  research.  The Company expects  research and  development  expenses to
return to levels experienced in prior quarters.

      Selling and  administrative  expenses were $21,239,000 and $72,460,000 for
the three and nine month periods ended December 31, 1997 compared to $19,566,000
and  $60,282,000  for the three and nine month periods ended  December 31, 1996.
Approximately  60% of the  increase  for the three  month  period and 86% of the
increase for the nine month period relate to promotional  expenses for customers
associated with the launch of new generic products including ranitidine.

      Somerset's  contribution to the  Company's  earnings per share
was $.01 and $.06 for the three and nine month periods  ended  December 31, 1997
compared to $.03 and $.11 for the three and nine month  periods  ended  December
31, 1996.  Generic  competition  continues to adversely affect  Somerset's
contribution to the Company's net earnings per share.

      For the three month  period  ended  December  31, 1997 the increase in the
effective tax rate over the same period a year ago is primarily  attributable to
the increase in domestic earnings versus Puerto Rico earnings. In addition,  the
effective tax rate for the nine month period ended December 31, 1997 was further
impacted by the Other Revenue recognized during the period which is subjected to
the full Federal and State tax rates.

Liquidity, Capital Resources and Financial Condition

      Working  capital   increased  from  $300,274,000  at  March  31,  1997  to
$332,152,000  at  December  31,  1997.  The ratio of  current  assets to current
liabilities  improved  from 4.8 to 1 at March 31,  1997 and 6.0 to 1 at December
31, 1997.

      Net cash provided from operating  activities was  $34,878,000 for the nine
months ended December 31, 1997 compared to $46,096,000  for the same period last
year.  Significant  changes in balance sheet accounts between March 31, 1997 and
December 31, 1997 relate  principally to the settlement of the Internal  Revenue
Service audit and increased  inventory  levels  attributable to continued higher
demand for the Company's products. These timing items, partially offset by
the increase in earnings, are primarily responsible for the change in cash flows
from operating  activities between the current period and the same period a year
ago.

      Additions to property, plant and equipment amounted to $19,703,000 for the
nine months ended  December  31,  1997.  Capital  expenditures  are  principally
related to the completion of a new  distribution  facility in Greensboro,  North
Carolina  and  expansion  of the  manufacturing  facility  in  Morgantown,  West
Virginia.  The  acquisition  of  Maxzide(R)  in the prior  period  is  primarily
responsible for the decrease in cash used in investing activities.




                                       -9-






PART II. OTHER INFORMATION


      Item 6. Exhibits and Reports on Form 8-K

      (a)   Exhibit 27 required by Item 601(c) of Regulation S-X filed herewith.

      (b)   Reports  on Form 8-K - There  were no  reports  on Form 8-K filed
               during the three months ended December 31, 1997.











                                   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  2/13/98                     /s/ Milan Puskar
    ------------------------    ---------------------------------
                                Milan Puskar
                                Chairman of the Board, Chief
                                Executive Officer and President



DATE  2/13/98                     /s/ Milan Puskar
    ------------------------    --------------------------
                                Donald C. Schilling
                                Vice President of Finance



                                      -10-