UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                               ------------------
                                    FORM 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER
                        PURSUANT TO RULE 13a-16 OR 15d-16
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               ------------------
                         For the month of September 2004

                        Commission File Number: 001-31368

                                 SANOFI-AVENTIS
                 (Translation of registrant's name into English)

                   174, avenue de France, 75013 Paris, FRANCE
                    (Address of principal executive offices)

         Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

                           Form 20-F       [X]          Form 40-F      [ ]

         Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(1):_____

         Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(7):_____

         Indicate by check mark whether the registrant by furnishing the
information contained in this Form is also thereby furnishing the information to
the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934.

                           Yes            [ ]                    No      [X]

         If "Yes" marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b):  82-________


         This Report on Form 6-K shall be deemed to be incorporated by reference
into  Sanofi-Aventis'   (formerly  known  as   Sanofi-Synthelabo)   Registration
Statement on Form F-4 (Registration No. 333-112314), as post-effectively amended
and declared effective on May 13, 2004 by the United States Securities  Exchange
Commission, and the related prospectus,  dated April 9, 2004, and the prospectus
supplement,  dated May 27,  2004,  each filed  pursuant to Rule 424(b) under the
United States Securities Act of 1933, as amended, and shall be part thereof from
the date on which  this  Report  is  filed,  to the  extent  not  superseded  by
documents or reports subsequently filed or furnished.







         On   September   16,   2004,    Sanofi-Aventis   (formerly   known   as
Sanofi-Synthelabo) issued the two press releases attached hereto as Exhibit 99.1
and Exhibit 99.2, each of which is incorporated herein by reference.



                                  EXHIBIT LIST

Exhibit No.                     Description
----------                      -----------

Exhibit 99.1    Press Release, dated September 16, 2004, announcing definitive
                results of the French, U.S. and German Offers after the
                subsequent offering periods

Exhibit 99.2    Press Release, dated September 16, 2004, announcing the new logo
                of Sanofi-Aventis














                                   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.


Dated: September 16, 2004                 SANOFI-AVENTIS


                                          By:       /s/ JEAN-CLAUDE LEROY
                                               ---------------------------------
                                               Name:    Jean-Claude Leroy
                                               Title:   Senior Vice President &
                                                        Chief Financial Officer







                                 EXHIBIT INDEX

Exhibit No.                             Description
-----------                             -----------


Exhibit 99.1    Press Release, dated September 16, 2004, announcing definitive
                results of the French, U.S. and German Offers after the
                subsequent offering periods

Exhibit 99.2    Press Release, dated September 16, 2004, announcing the new logo
                of Sanofi-Aventis