Idenix Pharmaceuticals to Present at Three Upcoming Conferences

CAMBRIDGE, Mass., Sept. 1  /PRNewswire-FirstCall/ -- Idenix Pharmaceuticals, Inc. (NASDAQ:IDIX) announced today that Jean-Pierre Sommadossi, Ph.D., Idenix's chairman and chief executive officer, will present a corporate overview at the upcoming Newsmakers in the Biotech Industry Conference on Friday, September 9, 2005 at 10:30 a.m. at the Sheraton New York Hotel & Towers and at the Bear Stearns 18th Annual Healthcare Conference on Monday, September 12, 2005 at 3:30 p.m. at the Grand Hyatt New York.  David A. Arkowitz, Idenix's chief financial officer, will present a corporate overview at the ThinkEquity Partners Growth Conference on Thursday, September 15, 2005 at 10:00 a.m. at The Ritz-Carlton, San Francisco.

The live and archived webcasts of the presentations can be accessed under "Events" in the Idenix Investor Center at http://www.idenix.com/.  The archived replays will be available on the Idenix website for two weeks following the presentations.

About Idenix:

Idenix Pharmaceuticals, Inc. is a biopharmaceutical company engaged in the discovery and development of drugs for the treatment of human viral and other infectious diseases.  Idenix's current focus is on the treatment of infections caused by hepatitis B virus, hepatitis C virus and human immunodeficiency virus (HIV).  Idenix's headquarters are located in Cambridge, Massachusetts and it has drug discovery operations in Montpellier, France and Cagliari, Italy.

  Contact:
   Idenix Pharmaceuticals, Inc.
   Media: Teri Dahlman [phone]
   Investors: Amy Sullivan [phone]


DATASOURCE: Idenix Pharmaceuticals, Inc.



CONTACT:  Teri Dahlman, [phone], or Amy Sullivan, [phone]

both of Idenix Pharmaceuticals, Inc.



Web site:  http://www.idenix.com/

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