EXHIBIT 32.2


CERTIFICATION OF CHIEF FINANCIAL 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 Annual  Report of  Pharmaceutical  Resources,  Inc. (the
"Company") on Form 10-K for the period ended December 31, 2003 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"),  I, Dennis
J. O'Connor,  Chief Financial  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/ Dennis J. O'Connor
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Dennis J. O'Connor
Chief Financial Officer
March 15, 2004