conference call & webcast at 15:00 cet on 24 february 2009

Geneva, Switzerland, 17 February 2009– Allosteric modulation company Addex Pharmaceuticals (SIX:ADXN) will discuss its 2008 full year financial results during a conference call and webcast for investors, analysts and the media on Tuesday, 24 February 2009 at 15:00 CET. Also on the 24th, the financial results press release will be issued prior to the start of trading on the SIX Swiss Exchange stock market.

Addex Full Year 2008 Financial Results Conference Call:

Date:                     24 February 2009
Time:                     15:00 CET 
Dial-in numbers:      +41 91 610 56 00       (Europe)
Dial-in numbers:      +44 207 107 0611      (UK)
Dial-in numbers:      +1 866 291 4166        (USA) 

A live webcast, slides, webcast replay and transcript will be made available at www.addexpharma.com

Addex Pharmaceuticals (www.addexpharma.com) discovers and develops allosteric modulators for human health. Allosteric modulators are a different kind of orally available small molecule therapeutic agent, which we believe will offer patients better results than classical drugs. Our lead allosteric modulator product, ADX10059, has achieved clinical proof of concept and is in Phase IIb testing for the treatment of GERD and, separately, migraine headache. Both are important diseases for which existing products have established multi-billion dollar markets despite sub-optimal efficacy. ADX10059 is a first-in-class mGluR5 inhibitor, a therapeutic strategy that also is being pursued to treat multiple indications by large pharma competitors.

Our product pipeline and technology already have proven their value through our relationships with four of the top 10 pharmaceutical companies in the world. Specifically, in two separate license agreements with Merck & Co., Inc., we are developing positive allosteric modulators of mGluR4 and mGluR5 as drugs to treat Parkinson's disease and schizophrenia, respectively. A third agreement, with Ortho McNeil Pharmaceuticals inc., a Johnson & Johnson company, is focused on development of positive allosteric modulators of mGluR2 to treat anxiety and schizophrenia. Separately, investment funds from Roche and GlaxoSmithKline have extended their validation of our technology, products and management by making significant investments in Addex.

Chris Maggos
Head of Investor Relations & Communications
Addex Pharmaceuticals   
     +41 22 884 15 11      Direct
chris.maggos(at)addexpharma.com

Disclaimer: The foregoing release contains forward-looking statements that can be identified by terminology such as "not approvable", "continue", "believes", "believe", "will", "remained open to exploring", "would", "could", or similar expressions, or by express or implied discussions regarding Addex Pharmaceuticals Ltd, its business, the potential approval of its products by regulatory authorities, or regarding potential future revenues from such products. Such forward-looking statements reflect the current views of Addex Pharmaceuticals Ltd regarding future events, and involve known and unknown risks, uncertainties and other factors that may cause actual results with allosteric modulators of mGluR4, mGluR2 or mGluR5 to be materially different from any future results, performance or achievements expressed or implied by such statements. There can be no guarantee that allosteric modulators of mGluR4, mGluR2 or mGluR5 will be approved for sale in any market or by any regulatory authority. Nor can there be any guarantee that allosteric modulators of mGluR4, mGluR2 or mGluR5 will achieve any particular levels of revenue (if any) in the future. In particular, management's expectations regarding  allosteric modulators of mGluR4, mGluR2 or mGluR5 could be affected by, among other things, unexpected actions by our partners, unexpected regulatory actions or delays or government regulation generally; unexpected clinical trial results, including unexpected new clinical data and unexpected additional analysis of existing clinical data; competition in general; government, industry and general public pricing pressures; the company's ability to obtain or maintain patent or other proprietary intellectual property protection. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated, believed, estimated or expected. Addex Pharmaceuticals is providing the information in this press release as of this date and does not undertake any obligation to update any forward-looking statements contained in this press release as a result of new information, future events or otherwise.