IDIX (MM)

Idenix Pharmaceuticals, Inc. (Nasdaq:IDIX) announced today that Idenix management will present a corporate overview at the Wells Fargo Securities 2013 Healthcare Conference on Tuesday, June 18, 2013, at 1:10 p.m. ET at the InterContinental Hotel in Boston, MA. Management will also participate in a panel discussion on Hepatitis C earlier in the day at 10:00 a.m. ET.  

The live and archived webcast of the Company presentation can be accessed under "Events and Presentations" in the Idenix Investor Center at www.idenix.com. The archived replay will be available on the Idenix website for two weeks following the conference.

ABOUT IDENIX PHARMACEUTICALS

Idenix Pharmaceuticals, Inc., headquartered in Cambridge, Massachusetts, is a biopharmaceutical Company engaged in the discovery and development of drugs for the treatment of human viral diseases.  Idenix's current focus is on the treatment of patients with hepatitis C virus (HCV) infection. For further information about Idenix, please refer to www.idenix.com.

CONTACT: Teri Dahlman
         (617) 995-9807