Achillion to Present at Three Upcoming Investor Conferences

Achillion to Present at Three Upcoming Investor Conferences

NEW HAVEN, Conn., May 9, 2013 (GLOBE NEWSWIRE) -- Achillion Pharmaceuticals,
Inc. (Nasdaq:ACHN) today announced that members of the senior management team
will be presenting a company overview at three upcoming investor conferences:

  *Bank of America Merrill Lynch 2013 Health Care Conference on Wednesday,
    May 15, 2013 at 3:00 p.m. PT at the Encore at the Wynn in Las Vegas, NV;
    
  *UBS Global Healthcare Conference on Tuesday, May 21, 2013 at 3:30 p.m. ET
    at the Sheraton New York Hotel in New York, NY; and
    
  *Deutsche Bank 38^th Annual dbAccess Health Care Conference on Thursday,
    May 30, 2013 at 2:10 p.m. ET at The Westin Boston Waterfront Hotel in
    Boston, MA.

The live audio broadcasts and the subsequent archived webcasts of the
Company's presentations will be available on the Company's website,
http://www.achillion.com, under the "News Center" section. The audio recording
will be archived for 30 days following the live presentation. Please connect
to Achillion's website several minutes prior to the start of the presentation
to ensure adequate time for any software downloads that may be necessary.

About Achillion Pharmaceuticals

Achillion is an innovative pharmaceutical company dedicated to bringing
important new treatments to patients with infectious disease. Achillion's
proven discovery and development teams have advanced multiple product
candidates with novel mechanisms of action. Achillion is focused on solutions
for the most challenging problems in infectious disease including HCV and
resistant bacterial infections. For more information on Achillion
Pharmaceuticals, please visit www.achillion.com or call 1-203-624-7000.

CONTACT: Company Contact:
         Glenn Schulman
         Achillion Pharmaceuticals, Inc.
         Tel. (203) 624-7000
         gschulman@achillion.com
        
         Investors:
         Mary Kay Fenton
         Achillion Pharmaceuticals, Inc.
         Tel. (203) 624-7000
         mfenton@achillion.com
        
         Media:
         Sally Barton
         Ogilvy PR
         Tel. (212)880-5240
         sally.barton@ogilvy.com
        
         Investors:
         Seth Lewis
         The Trout Group, LLC
         Tel. (646) 378-2952
         slewis@troutgroup.com
 
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