Filed by Sanofi-Aventis
                                  Pursuant to Rule 165 and Rule 425(a) under the
                                           United States Securities Act of 1933,
                                                                      as amended

                                                        Subject Company: Aventis
                                                   Commission File No. 001-10378
                                                          Date: October 14, 2004


     On September 14, 2004, Sanofi-Aventis issued the following press release.

     In  connection   with  the  proposed   merger  of  Aventis  with  and  into
sanofi-aventis, sanofi-aventis intends to file a post-effective amendment to its
registration  statement on Form F-4 (File no. 333-112314),  which will include a
prospectus  relating to the merger, and will file additional  documents with the
SEC.  INVESTORS  ARE URGED TO READ THE  REGISTRATION  STATEMENT,  INCLUDING  ANY
PRELIMINARY PROSPECTUS OR DEFINITIVE PROSPECTUS (WHEN AVAILABLE) RELATING TO THE
MERGER,  AND ANY OTHER  RELEVANT  DOCUMENTS  FILED WITH THE SEC,  INCLUDING  ALL
AMENDMENTS AND  SUPPLEMENTS,  BECAUSE THEY WILL CONTAIN  IMPORTANT  INFORMATION.
Free copies of the registration  statement,  as well as other relevant documents
filed with the SEC, may be obtained at the SEC's web site at www.sec.gov. At the
appropriate time,  sanofi-aventis will provide investors with information on how
to obtain any merger-related  documents for free from sanofi-aventis or from its
duly appointed agents.



                                     * * * *




                             [SANOFI-AVENTIS LOGO]


                                                         Paris, October 14, 2004

                 PROPOSED MERGER OF AVENTIS INTO SANOFI-AVENTIS

The  Management  Board of Aventis at its  meeting on October 13,  2004,  and the
Supervisory  Board of Aventis and the Board of  Directors of  sanofi-aventis  at
their respective meetings on October 14, 2004, have each approved the terms of a
plan of merger of Aventis with and into sanofi-aventis.  The decision to study a
plan of merger was previously announced on August 31, 2004.

The proposed merger follows  sanofi-aventis'  offer in the first half of 2004 to
acquire Aventis and thereby create the largest  pharmaceuticals  group in Europe
and  the  third  largest  pharmaceuticals  group  in  the  world,  today  giving
sanofi-aventis 97.98% of Aventis' share capital and 98.02% of its voting rights.
A merger is a logical step in the integration  process,  simplifying the group's
legal structures.  It will allow Aventis shareholders to benefit from the market
liquidity of sanofi-aventis.

The merger exchange ratio has been set at 27 sanofi-aventis  ordinary shares for
23 Aventis  ordinary  shares,  substantially  equivalent  to the exchange  ratio
offered  in the all  stock  election  in the  public  tender  offer  before  the
adjustment in respect of the Aventis 2003  dividend (or 1.1739).  This ratio has
been  determined  on the  basis  of the  same  set of  analyses  used to set the
exchange  ratio in the all-stock  election and is currently  under review by the
merger auditors appointed in connection with the proposed merger.

The  resolutions  required  for the  approval  of the  proposed  merger  will be
submitted to the respective  extraordinary general meetings planned for December
13, 2004 on the first call for Aventis and sanofi-aventis,  and for December 23,
2004 on the second call for sanofi-aventis.

The  proposed  merger  will  be the  subject  of an  information  document  (the
"Document  E"),  which will be registered  with the French  Autorite des marches
financiers  and a  registration  statement  filed with the U.S.  Securities  and
Exchange Commission.


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. The sanofi-aventis Group is
listed in Paris (EURONEXT : SAN) and in New York (NYSE : SNY).








                Senior Vice President, Corporate Communications:
       Nicole Cranois - Vice President, Media Relations: Jean-Marc Podvin
                Tel.:+33 1.53.77.42.23 - Fax: +33 1.53.77.42.65 -
                 174, avenue de FRANCE - 75013 Paris - France -
                             www.sanofi-aventis.com


[PRESS RELEASE GRAPHIC APPEARS AT RIGHT-HAND SIDE OF PAGE]





Important Information
---------------------


In connection with the proposed merger of Aventis with and into sanofi-aventis,
sanofi-aventis intends to file a post-effective amendment to its registration
statement on Form F-4 (File no. 333-112314), which will include a prospectus
relating to the merger, and will file additional documents with the SEC.
INVESTORS ARE URGED TO READ THE REGISTRATION STATEMENT, INCLUDING ANY
PRELIMINARY PROSPECTUS OR DEFINITIVE PROSPECTUS (WHEN AVAILABLE) RELATING TO THE
MERGER, AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, INCLUDING ALL
AMENDMENTS AND SUPPLEMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION.
Free copies of the registration statement, as well as other relevant documents
filed with the SEC, may be obtained at the SEC's web site at www.sec.gov. At the
appropriate time, sanofi-aventis will provide investors with information on how
to obtain any merger-related documents for free from sanofi-aventis or from its
duly appointed agents.

As agreed with the Autorite des marches financiers (AMF), a draft of the French
prospectus relating to the merger (Document E), which has not yet been approved
by the AMF, will be made available, free of charge, at the sanofi-aventis
website, www.sanofi-aventis.com, from the time that the documentation filed with
the SEC is available on the website of the SEC. INVESTORS SHOULD BE AWARE THAT
THE FRENCH DOCUMENT WHICH WILL BE AVAILABLE ON THE SANOFI-AVENTIS WEBSITE IS
ONLY A DRAFT OF THE FRENCH PROSPECTUS (DOCUMENT E) AND THAT IT REMAINS SUBJECT
TO CHANGE, IN PARTICULAR IN RESPONSE TO COMMENTS FROM THE AMF. THEREFORE, IT IS
STRONGLY RECOMMENDED THAT INVESTORS READ THE DEFINITIVE VERSION OF THE FRENCH
PROSPECTUS (DOCUMENT E) WHICH WILL BE AVAILABLE ON-LINE ON THE WEBSITES OF THE
AMF AND OF SANOFI-AVENTIS AFTER IT HAS BEEN APPROVED BY THE AMF.





                Senior Vice President, Corporate Communications:
       Nicole Cranois - Vice President, Media Relations: Jean-Marc Podvin
                Tel.:+33 1.53.77.42.23 - Fax: +33 1.53.77.42.65 -
                 174, avenue de FRANCE - 75013 Paris - France -
                             www.sanofi-aventis.com


[PRESS RELEASE GRAPHIC APPEARS AT RIGHT-HAND SIDE OF PAGE]