Idenix Pharmaceuticals, Inc. to Hold Second Quarter and Six Month 2013 Financial Results Conference Call on Wednesday, August 7,

Idenix Pharmaceuticals, Inc. to Hold Second Quarter and Six Month 2013
Financial Results Conference Call on Wednesday, August 7, 2013

CAMBRIDGE, Mass., Aug. 6, 2013 (GLOBE NEWSWIRE) -- Idenix Pharmaceuticals,
Inc. (Nasdaq:IDIX) announced today that the Company's second quarter 2013
financial results will be released before market open on Wednesday, August 7,
2013.

Idenix management will host a conference call at 8:00 a.m. ET on Wednesday,
August 7, 2013, to discuss the company's financial results for the second
quarter of 2013 and provide an update on the company's development programs.

To access the call, please dial (877) 640-9809 (U.S./Canada) or (914) 495-8528
(International) and enter passcode 20505896. A live webcast will be available
through the Investor section of the Idenix website at www.idenix.com under
"Events & Presentations". The archived webcast will be available for two weeks
following the call on the Idenix website.

About Idenix

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 HCV infection. For further information about
Idenix, please refer towww.idenix.com.

CONTACT: Idenix Pharmaceuticals Contact:
         Teri Dahlman (617) 995-9807

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