PR Newswire/Les Echos/

Information concerning the total number of voting rights and shares, provided
pursuant to article L. 233-8 II of the Code de commerce (the French Commercial
Code) and article 223-16 of the Règlement général de l'Autorité des Marchés
Financiers (Regulation of the French stock market authority)

sanofi-aventis
a French société anonyme with a registered share capital of 2,631,050,926 EUR
Registered office : 174, avenue de France - 75013 Paris - France
Registered at the Paris Commercial and Companies Registry
under number 395 030 844

Date Total number of Total number of
outstanding shares voting rights *
November 30, 2009 1,316,452,799 1,556,331,074

* : Pursuant to article 223-11 of the Règlement général de l'Autorité des
Marchés Financiers.

This information is also available on the internet website of sanofi-aventis
under " Regulated Information in France ":

http:
//en.sanofi-aventis.com/investors/regulatedinfofrance/regulatedinfofrance.asp

Investor Relations Department
Europe Tel: + 33 1 53 77 45 45 US Tel: + 1 908 981 5560
e-mail: IR@sanofi-aventis.com

Media Relations Department
Tel: + 33 1 53 77 44 50
e-mail: MR@sanofi-aventis.com

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