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the date on which  this  Report  is  filed,  to the  extent  not  superseded  by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 17, 2004, Sanofi-Aventis (formerly known as
Sanofi-Synthelabo) issued the following press release.





                              [SANOFI-AVENTIS LOGO]

                                                        Paris September 17, 2004


                   ELOXATIN(R) TO RECEIVE EXPANDED INDICATION
                            IN EUROPE FOR EARLY STAGE
                           COLORECTAL CANCER TREATMENT


The  sanofi-aventis  Group (PARIS : SAN,  NYSE : SNY)  announced  today that its
anti-cancer agent Eloxatin(R) (oxaliplatin), which is currently marketed for the
"treatment of Metastatic  Colorectal  Cancer in combination with  5-fluorouracil
and folinic acid" has successfully  completed a Mutual Recognition  Procedure in
Europe,  which will  result in an  extended  indication  for the  product in the
adjuvant setting:

            "ADJUVANT TREATMENT OF STAGE III (DUKE'S C) COLON CANCER
                  AFTER COMPLETE RESECTION OF PRIMARY TUMOR'".

The European approval was based on the results of the landmark adjuvant clinical
trial,  MOSAIC,  which was  recently  published  in June 2004 in the New England
Journal of Medicine.

MOSAIC is a large,  international  randomized  Phase III trial  involving  2,246
patients in 148 centres and 20 countries. The primary objective of the study was
to  evaluate  the  Disease  Free  Survival  (time to  relapse or death) in these
patients,  all of whom had a completely  resected  stage II/III colon cancer and
received  the  current  standard  of  adjuvant  chemotherapy  for  colon  cancer
(5-fluorouracil/leucovorin  known as 5-FU/LV)  with or without  the  addition of
Eloxatin(R).

The Mosaic  trial  demonstrated  that the  addition  of  Eloxatin(R)  to 5-FU/LV
increased  Disease  Free  Survival at 3 years to 78.2%  versus 72.9% for 5-FU/LV
alone  (p=0.002),  with a 23% reduction in the risk of recurrence in the overall
study population.
For patients with stage III colorectal cancer,  3-year Disease Free Survival was
72.2% with the addition of Eloxatin(R)  and 65.3% for 5-FU/LV alone,  with a 24%
reduction in the risk of recurrence.(1)

These were the very first  results to  demonstrate  a  significant  benefit over
5-FU/LV alone in this setting,  and provide  early-stage  colon cancer  patients
with new hope for potential cure of their disease.





"The MOSAIC trial  demonstrates  that surgical removal of the primary tumour and
treatment  with  Eloxatin(R)-based  chemotherapy  can  increase  the chances for
patients with  early-stage  colon cancer to be cured," said Aimery de Gramont MD
PhD,   Professor  of  Medicine   and   Director  of  the  Oncology   Department,
Saint-Antoine  Hospital,  Paris and principal  investigator of the MOSAIC trial.
"We are pleased to see that Eloxatin(R)-based  adjuvant therapy will now be made
available to these patients in the European Union."

The addition of Eloxatin(R) to 5-FU/LV is well  tolerated.  The most  frequently
reported  side  effect was  neutropenia  (decrease  in the number of white blood
cells) but this was  complicated  by fever or  infection in only 1.8 % of cases.
Among patients experiencing peripheral sensory neuropathy ("pins and needles" in
the fingers),  partial or total recovery was observed in almost all cases within
a period of six months following treatment.
On the basis of the MOSAIC trial findings,  a supplemental  New Drug Application
(sNDA) was also submitted to the Food and Drug Administration (FDA) in the US in
early 2004 to include the adjuvant  treatment  of patients  with colon cancer in
the  labelling  of  Eloxatin(R).  An  extension  of the  approval to include the
adjuvant  treatment  of patients  with colon cancer has also been applied for in
several other countries including Switzerland and Australia.

ABOUT ELOXATIN(R)
Eloxatin(R) received approval in France for the 2nd line treatment of metastatic
colorectal  cancer in April 1996,  and as a 1st line treatment in April 1998. In
July 1999,  Eloxatin(R)  was approved for the 1st line  treatment  indication in
major European countries, through the Mutual Recognition Procedure, France being
the Reference Member State.

Eloxatin(R) has successfully  completed a Mutual Recognition Procedure in Europe
in  December  2003,  which  allowed  the  product to be  indicated  for the full
indication:  "Treatment  of Metastatic  Colorectal  Cancer in  combination  with
5-fluorouracil and folinic acid" (i.e., 1st line and 2nd line treatment).

In the U.S., Eloxatin(R) received marketing approval on January 9, 2004, for the
first line  treatment  of  metastatic  carcinoma  of the colon or  rectum.  This
approval  recommends  the use of  Eloxatin(R),  in combination  with  infusional
5-FU/LV,  for the  treatment  of  advanced  carcinoma  of the  colon or  rectum.
Eloxatin(R)  had  previously  (August  2002)  received  approval for second line
treatment of these patients.

Eloxatin(R) is currently  marketed by  sanofi-aventis  in more than 60 countries
for the treatment of metastatic colorectal.

COLORECTAL CANCER LEADING CAUSE OF DEATH
Colorectal  cancer is the third  leading  cause of cancer and the forth  leading
cause of  mortality  due to cancer in the world.  About one million new cases of
colorectal cancer are diagnosed worldwide every year.

FURTHER DEVELOPMENT IN OTHER TYPES OF CANCER
An extensive  worldwide clinical  development  program is ongoing to explore the
benefit of Eloxatin(R) in other types of cancer.





ABOUT SANOFI-AVENTIS
The  sanofi-aventis  Group is the world's 3rd  largest  pharmaceutical  company,
ranking  number  1  in  Europe.   Backed  by  a  world-class  R&D  organization,
sanofi-aventis is developing leading positions in seven major therapeutic areas:
cardiovascular disease, thrombosis,  oncology, diabetes, central nervous system,
internal medicine, vaccines.



(1)T. ANDRE, C. BONI, L. MOUNEDJI-BOUDIAF, M. NAVARRO, J. TABERNERO, T. HICKISH,
C. TOPHAM, M. ZANINELLI, P. CLINGAN, J. BRIDGEWATER, I. TABAH-FISCH, A. DE
GRAMONT. Oxaliplatin, Fluorouracil, and Leucovorin as Adjuvant Treatment for
Colon Cancer. (MOSAIC). New Engl. J. Med., 2004; 350: 2343-2351".

-----------------------------------------------------


INVESTOR RELATIONS DEPARTMENT
Philippe Goupit           Director of Investor Relations
Arnaud Delepine           Investor Relations Europe
Sanjay Gupta              Investor Relations US
Anne d'Halluin-Sulzer     Investor Relations
Loic Gonnet               Investor Relations

CONTACTS :
E-mail : investor-relations@sanofi-aventis.com
         -------------------------------------
Europe                                  US
Tel : + 33 1 53 77 45 45                Tel. :       +1 212 551 40 18
Fax : + 33 1 53 77 42 96                Fax :        +1 646 487 40 18












                                   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 17, 2004                  SANOFI-AVENTIS


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