EXHIBIT 32.1

 CERTIFICATION OF PRESIDENT AND CHIEF EXECUTIVE OFFICER




                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Par  Pharmaceutical  Companies,  Inc.
(the "Company") on Form 10-Q for the period ended July 3, 2005 as filed with the
Securities and Exchange  Commission on the date hereof (the "Report"),  I, Scott
Tarriff, President and Chief Executive Officer of the Company, certify, pursuant
to  18  U.S.C.  Section  1350,  as  adopted  pursuant  to  Section  906  of  the
Sarbanes-Oxley Act of 2002, that, to my knowledge:

     (1)  The Report fully  complies with the  requirements  of Section 13(a) of
          the Securities Exchange Act of 1934; and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
          material respects, the financial condition and result of operations of
          the Company.


/s/ Scott Tarriff
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Scott Tarriff
President and Chief Executive Officer
August 12, 2005