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Samaritan Pharmaceuticals (AMEX:LIV): -- Completed Phase II Stage 1 (10 Day Monotherapy) -- Expect to Report Stage I Preliminary Results at Shareholders Meeting May 31st -- Expect Final PII Stage I Report July -- Currently Enrolling Phase II Stage 2 Samaritan Pharmaceuticals Inc. (AMEX:LIV) a developer of innovative drugs, announced today, it completed a Phase II Stage 1 (10 day monotherapy study) with 34 patients in which SP01A was being evaluated as an adjunct therapy for treatment-experienced HIV patients who are failing on their current anti-viral therapy. Samaritan also notes it has started enrolling for its Stage 2 (28 day monotherapy trial) and numerous Stage 1 evaluates are rolling over to Stage 2 which will count toward the 60 evaluates Samaritan intends to enroll for the Phase II Stage 2. Dr. Janet Greeson, CEO of Samaritan stated, "Completing this 10 day HIV monotherapy study of SP01A is a significant milestone in its clinical development. We anticipate locking the data from this study at the end of this month and with a bit of luck will report preliminary results at the shareholders meeting, May 31, 2006. We expect to submit the (10 day monotherapy) final report to the FDA in July 2006. We remain resilient in advancing SP01A through FDA clinical trials hoping it might serve as a life-saving drug for HIV drug resistant patients." Previously Completed Trial Phase I/II Proof of Concept Study: An 8-week, Phase I/II study, conducted at AIDS Research Alliance in Hollywood, CA, was concluded and reported in July of 2003. SP01A was associated with reductions in HIV-1 viral load in patients with measurable HIV-1 in a dose dependent manner. In the high dose group, mean HIV-1 viral load reduction of 1.34 log10 copies/ml was observed; 100% of the patients achieved HIV-1 viral loads below the limit of detection and a greater than 1.0 log reduction was observed in 80% of the patients by Week 8. This level of reduction in viral load is clinically relevant, particularly since patients continued on background antiretroviral therapy throughout the clinical trial. Consistent with a treatment effect of SP01A, HIV-1 viral load measurements showed a rebound increase when high dose SP01A treatment was discontinued. For more information on this clinical trial, please go to the FDA Clinical Trials Website at www.clinicaltrials.gov. Samaritan Pharmaceuticals: "We LIV....to Save Lives." Samaritan is a small-cap Biotech, driven to discover, develop, and commercialize, innovative therapeutics' for AIDS, Alzheimer's, Cancer and Heart disease. Look at www.samaritanpharma.com. Please register on Website so we can notify you of upcoming conference calls, news and events. Disclaimer The company disclaims any information that is created by an outside party and endorses only information that is communicated by its press releases, filings and Website. This news release contains forward-looking statements that reflect management's current beliefs about the potential for its drug candidates, science and technology. However, as with any biopharmaceutical under development, there are significant risks and uncertainties in the process of development and regulatory review. There are no guarantees that products will prove to be commercially successful. For additional information about the factors that affect the company's business, please read the company's latest Form 10-K filed April 15, 2005. The company undertakes no duty to update forward-looking statements. NOTE TO EDITORS: in the term "log10" the 10 is subscript. It was changed for transmission purposes only.