UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 3)*

                             Mylan Laboratories Inc.
                                (Name of Issuer)

                     Common Stock, par value $.50 per share
                         (Title of Class of Securities)

                                    628530107
                                 (CUSIP Number)

                              Keith Schaitkin, Esq.
                            Associate General Counsel
                  Icahn Associates Corp. & affiliated companies
                          767 Fifth Avenue, 47th Floor
                            New York, New York 10153
                                 (212) 702-4380

           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                November 19, 2004
             (Date of Event which Requires Filing of this Statement)

If the filing  person has  previously  filed a statement on Schedule 13G to
report the  acquisition  that is the subject of this Schedule 13D, and is filing
this schedule  because of Section  240.13d-1(e),  240.13d-1(f) or  240.13d-1(g),
check the following box / /.

NOTE:  Schedules  filed in paper format shall include a signed original and
five copies of the schedule,  including  all  exhibits.  See Rule 13d- for other
parties to whom copies are to be sent.

*The  remainder  of this cover  page  shall be filled  out for a  reporting
person's  initial  filing on this  form with  respect  to the  subject  class of
securities,  and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

The  information  required on the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 ("Act") or otherwise  subject to the  liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  see
the Notes).





                                  SCHEDULE 13D

Item 1.  Security and Issuer

     This Schedule 13D filed by the  Registrants  with the U.S.  Securities  and
Exchange  Commission  on September 7, 2004 as amended on September  17, 2004 and
November 1, 2004,  relates to the common shares,  $.50 par value (the "Shares"),
of Mylan Laboratories Inc., a Pennsylvania corporation (the "Issuer") is amended
to furnish  information as set forth herein. All capitalized terms not otherwise
defined shall have the meaning  ascribed to such terms in the  previously  filed
statement on Schedule 13D.


Item 4.  Purpose of Transaction


     Item 4 is hereby amended to add the following:

     On November 19, 2004,  High River  delivered a letter to the Issuer,  which
letter  is  attached  hereto as  Exhibit  1, and is  incorporated  herein in its
entirety.

     SECURITY  HOLDERS  ARE  ADVISED  TO READ  THE  PROXY  STATEMENT  AND  OTHER
DOCUMENTS  RELATED TO  SOLICITATION  OF PROXIES BY MR. ICAHN AND HIS  AFFILIATES
FROM THE STOCKHOLDERS OF MYLAN  LABORATORIES INC. FOR USE AT ITS SPECIAL MEETING
WHEN  AND  IF  THEY  BECOME  AVAILABLE   BECAUSE  THEY  WILL  CONTAIN  IMPORTANT
INFORMATION.  WHEN COMPLETED,  A DEFINITIVE  PROXY STATEMENT AND A FORM OF PROXY
WILL BE MAILED TO STOCKHOLDERS OF MYLAN  LABORATORIES INC. AND WILL BE AVAILABLE
AT  NO  CHARGE  AT  THE   SECURITIES  AND  EXCHANGE   COMMISSION'S   WEBSITE  AT
HTTP://WWW.SEC.GOV.   INFORMATION  RELATING  TO  THE  PARTICIPANTS  IN  A  PROXY
SOLICITATION  IS  CONTAINED  IN THE  SCHEDULE  14A  FILED BY MR.  ICAHN  AND HIS
AFFILIATES WITH THE SECURITIES AND EXCHANGE  COMMISSION ON OCTOBER 14, 2004 WITH
RESPECT TO MYLAN  LABORATORIES INC. THAT SCHEDULE 14A IS CURRENTLY  AVAILABLE AT
NO CHARGE ON THE SECURITIES AND EXCHANGE COMMISSION'S WEBSITE.


Item 7.  Material to be Filed as Exhibits


1.       Letter dated November 19, 2004 from High River to the Issuer.


SIGNATURE

     After  reasonable  inquiry  and to the  best  of  each  of the  undersigned
knowledge and belief, each of the undersigned certifies that the information set
forth in this statement is true, complete and correct.

Dated:  November 19, 2004

BARBERRY CORP.


By:      /s/ Edward E. Mattner
         Name: Edward E. Mattner
         Title: Authorized Signatory


HOPPER INVESTMENTS LLC
By:      BARBERRY CORP., Sole Member



         By:      /s/ Edward E. Mattner
                  Name: Edward E. Mattner
                  Title: Authorized Signatory


HIGH RIVER LIMITED PARTNERSHIP
By:      HOPPER INVESTMENTS LLC, General Partner
         By:      BARBERRY CORP., Sole Member



                  By:      /s/ Edward E. Mattner
                  Name: Edward E. Mattner
                  Title: Authorized Signatory



/s/ Carl C. Icahn
CARL C. ICAHN


/s/ Gail Golden
GAIL GOLDEN





      [Signature Page of Amendment No. 3 to Schedule 13D with respect to Mylan]
     




                         
                         High River Limited Partnership
                          767 Fifth Avenue - 47th Floor
                            New York, New York 10153


                                                     November 19, 2004


Board of Directors
Mylan Laboratories, Inc.
1500 Corporate Drive - Suite 400
Canonsburg, Pennsylvania  15317-8574


Ladies and Gentlemen:

     Over the course of a lengthy  conversation  held in our office on September
10, 2004, Mr. Coury led us to understand,  in substance, that he wanted Mylan to
engage in the King  Pharmaceuticals,  Inc. ("King")  acquisition  because of his
skepticism  regarding the future  growth  potential of the generic drug industry
and his belief that the  acquisition of King was the best and basically the only
alternative for Mylan.  However,  as the largest Mylan  shareholder,  we are not
persuaded that there is no growth  potential in the generic drug industry and we
believe that there are much better  alternatives  for Mylan than the acquisition
of King.  In fact, in light of the many risks  associated  with King, we believe
that an  acquisition  of King would be an egregious  mistake.  We are  therefore
making the proposal set forth below.

     We are willing to purchase Mylan at $20 per share. (1) We would be prepared
to enter into an  acquisition  contract with Mylan without  requiring a break-up
fee.  This would allow  Mylan to seek  alternative  buyers  while we are doing a
customary due diligence.  In this regard, we have had informal  discussions that
lead us to believe  that at least three  synergistic  buyers  would also have an
interest in acquiring Mylan on, but only on, a friendly basis. To our knowledge,
Mylan has not previously  shown any  indication to competitors  that it would be
willing to entertain "friendly" bids and offer due diligence. However, it should
be noted that there can be no assurance that such transactions would emerge.

     If you  determine  that you  cannot  at this  time put Mylan up for sale or
grant due  diligence  because of the current  King  contract,  we are willing to
stand  by our  $20  per  share  proposal  until  such  time  that  either  Mylan
shareholders  vote the King deal down or you determine that you are legally free
to put Mylan up for sale and grant due diligence.

     In order to underscore  the  sincerity of our proposal,  we are prepared to
negotiate  an  agreement  not to wage a proxy fight to unseat Mr.  Coury and the
existing Mylan Board during the next 2 years (thereby,  in our opinion,  putting
our existing  investment  in Mylan of over $450  million at risk),  if we do not
proceed with the  acquisition  following  the  completion of due  diligence.  We
anticipate that diligence would not take more than 6 weeks. We are ready to meet
with you as soon as possible.

--------
1 As you are aware the contract with King contemplates other offers and provides
for a break-up fee in that regard.





     By entering into the King agreement, the Board has determined to change the
direction of Mylan from a generics  company to a much riskier hybrid focusing on
branded products. The Board appears willing to pay $4 billion to accomplish this
transition  and what is even more  preposterous,  the Board  appears  willing to
allow an untested Robert Coury to run this new and highly  complicated  venture.
Additionally,  the recent  developments at King have  highlighted the tremendous
risks inherent in this acquisition,  about which we have been  complaining,  and
have turned the entire situation into a three-ring circus.

     The  corporate  scandals  of the past few  years  have  brought a major sea
change concerning directors and their personal responsibility. Board members can
no longer blithely hide behind the business judgment rule and opinion letters of
advisors when exercising  their corporate  authority.  We believe that now, more
than ever, shareholders of companies, our courts and the citizens of our country
at large,  demand that boards act responsibly and be held  responsible for their
actions.  If the  Board  determines  to  proceed  with any new King  acquisition
without first  submitting to shareholders the alternative  outlined above,  such
action  would,  in our view,  constitute  a  quintessential  example  of a board
abrogating  its  responsibility.  Do not doubt that we will hold  Mylan's  Board
members personally  responsible for any breach of fiduciary duty associated with
these matters.

                                             Very truly yours,

                                             High River Limited Partnership

                                             By: Hopper Investments LLC,
                                                     its general partner

                                             By: Barberry Corp., sole member


                                             By: /s/ Carl C. Icahn
                                             Name: Carl C. Icahn
                                             Title:   Chairman of the Board