Pozen Announces Positive Outcome for PA 325

Chapel Hill, N.C., March 6, 2007-Pozen Inc. (NASDAQ: POZN), today announced top-line results of its "Safer Aspirin" PA 325 proof-of-concept study conducted during the fourth quarter of 2006. PA 325 is a patented formulation of 325mg of aspirin surrounded by a 20mg coating of an immediate release formulation of a proton pump inhibitor.

The PA 325, 28 day study, involved two groups of 40 subjects over the age of 50. Each subject was treated with either once a day commercially available enteric coated aspirin 325mg or PA 325. The primary endpoint was gastrointestinal damage as measured by the Lanza scoring system used in our previous PN studies. The results were highly significant with 10 percent of the PA group having Lanza 3 or 4 gastrointestinal damage, whereas 57.5percent of the enteric coated aspirin group had this level of gastrointestinal damage. Furthermore, no ulcers were seen in the PA group, while 20 percent of subjects in the enteric coated aspirin 325mg group developed a gastric ulcer during the study. This difference was also statistically significant.

Dr. John R. Plachetka, chairman, president and chief executive officer stated, "The data from this first clinical study with PA 325 is very encouraging."

About POZEN

POZEN is a pharmaceutical company committed to developing therapeutic advancements for diseases with unmet medical needs where it can improve efficacy, safety, and/or patient convenience. POZEN's efforts are focused primarily on the development of pharmaceutical products for the treatment of acute and chronic pain and other pain-related conditions. POZEN has development and commercialization alliances with GlaxoSmithKline for the proposed product candidate *Trexima*_ combining sumatriptan, formulated with RT Technology_, and naproxen sodium in a single tablet for the acute treatment of migraine, which is currently under review by the United States Food and Drug Administration, and with AstraZeneca for proprietary fixed dose combinations of naproxen with the proton pump inhibitor esomeprazole magnesium in a single tablet for conditions such as osteoarthritis and rheumatoid arthritis in patients who are at risk for developing NSAID-associated gastric ulcers. The company's common stock is traded on The

Nasdaq Stock Market under the symbol "POZN". For detailed company information, including copies of this and other press releases, see POZEN's website: *www.pozen.com*.

Statements included in this press release that are not historical in nature are "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. You should be aware that our actual results could differ materially from those contained in the forward-looking statements, which are based on management's current expectations and are subject to a number of risks and uncertainties, including, but not limited to, our failure to successfully commercialize our product candidates; costs and delays in the development and/or FDA approval of our product candidates, including as a result of the need to conduct additional studies, or the failure to obtain such approval of our product candidates, including as a result of changes in regulatory standards or the regulatory environment during the development period of any of our product candidates; uncertainties in clinical trial results or the timing of such trials, resulting in, among other things, an extension in the period over which we recognize deferred revenue or our failure to achieve milestones that would have provided us with revenue; our inability to maintain or enter into, and the risks resulting from our dependence upon, collaboration or contractual arrangements necessary for the development, manufacture, commercialization, marketing, sales and distribution of any products; competitive factors; our inability to protect our patents or proprietary rights and obtain necessary rights to third party patents and intellectual property to operate our business; our inability to operate our business without infringing the patents and proprietary rights of others; general economic conditions; the failure of any products to gain market acceptance; our inability to obtain any additional required financing; technological changes; government regulation; changes in industry practice; and one-time events, including those discussed herein and in our Quarterly Report on Form 10-Q for the period ended September 30, 2006. We do not intend to update any of these factors or to publicly announce the results of any revisions to these forward-looking statements.

Adriana Jenkins 617.744.1713 office 617.710.8350 cell adrianajenkins@gmail.com

Posted: March 2007

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