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                               AMENDMENT AGREEMENT

     AMENDMENT AGREEMENT, dated as of May 1, 1999 by and between PDK Labs Inc.,
a New York corporation, with offices at 145 Ricefield Lane, Hauppauge, New York
11788 ("PDK") and Compare Generiks, Inc., a Delaware corporation, with offices
at 60 Davids Drive, Hauppauge, New York 11788 ("CGI").

     WHEREAS, PDK and CGI have heretofore entered into an Exclusive Supply and
Licensing Agreement, dated as of March 24, 1997 (the "Agreement"); as amended
April 1, 1998, November 1, 1998, and January 4, 1999.

     WHEREAS, Section 2(d) of the Agreement requires CGI to pay invoices within
sixty (60) days of the date of shipment of the related Products (as defined in
the Agreement);

     WHEREAS, the Agreement contains a provision permitting PDK to suspend its
obligations to perform under the Agreement in the event of an Event of Force
Majeure (as defined in the Agreement);

     WHEREAS, CGI is in default of the provisions of Section 2(d) of the
Agreement requiring CGI to pay invoices within sixty (60) days from the date of
shipment of the related Products and, in addition, an Event of Force Majeure (as
defined in the Agreement) has occurred and, in consideration for PDK agreeing to
waive (a) the breach by CGI of provisions contained in Section 2(d) of the
Agreement, and (b) its right to suspend performance of its obligations under the
Agreement, the parties hereto desire to (i) amend the Payment Provision to
provide for the payment by CGI to PDK of a higher amount.

     The terms which are not defined herein shall have the respective meanings
ascribed to them in the Agreement.

     NOW, THEREFORE, for valid and good consideration, the parties hereto agree
as follows:


          1) The sentence of Section 2(a) of the Agreement shall be deleted in
     its entirety and shall be replaced with the following:



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     "(a) In consideration for the waiver by PDK of (i) its rights with
     respect to the continuing breach by CGI of the payment provisions of
     Section 2(d) of this Agreement, and (ii) the right to suspend performance
     of its obligations under this Agreement as a result of the occurrence of an
     Event of Force Majeure (as defined in Section 5 below), CGI agrees to pay
     PDK $1.85 per bottle of Products shipped to CGI (the "Basic Payment"),
     provided that said waiver shall not constitute a waiver of PDK's right to
     terminate this Agreement and the License hereunder or to exercise any
     rights available to PDK upon reoccurrence or continuance of such acts or
     events. In addition to the Basic Payment, CGI shall also pay PDK the
     difference between 93% of the sales price as invoiced to the customer of
     each bottle and $1.85 per bottle (the "Excess Payment"). The Excess Payment
     is payable monthly, in arrears, within 15 days of the end of the month in
     which CGI received payment for the related Products."

          2) Except as herein above amended, all of the terms and provisions of
     the Agreement shall remain in full force and effect.

          3) This Amendment shall be governed by and construed in accordance
     with the laws of the State of New York, without regard to principles of
     conflicts of law.

     IN WITNESS WHEREOF, the parties have executed this Amendment Agreement as
of the day and year first above written.



                                        PDK LABS INC.

                                        By:
                                           -------------------------------------
                                           Reginald Spinello, President


                                        COMPARE GENERIKS, INC.

                                        By:
                                           -------------------------------------
                                           Thomas A. Keith, President