Bepreve

Treatment for Allergic Conjunctivitis

Update: Bepreve Now FDA Approved - September 8, 2009

Bepreve NDA Accepted for Review

ISTA Pharmaceuticals' New Drug Application for Bepreve Accepted for Review by U.S. Food and Drug Administration

IRVINE, Calif., Jan. 15 /PRNewswire-FirstCall/ -- ISTA Pharmaceuticals, Inc. today announced that ISTA's New Drug Application (NDA) for Bepreve (bepotastine ophthalmic solution) has been accepted for review by the U.S. Food and Drug Administration (FDA). The Company is seeking approval for Bepreve as an eye drop treatment for ocular itching associated with allergic conjunctivitis. The Company expects a standard review of ten months and has been given a user fee action date of September 12, 2009.

ISTA's Phase III clinical studies with Bepreve demonstrated highly statistically significant reductions in the primary endpoints of ocular itching. In addition, the results showed Bepreve had a statistically significant effect on the rapidity of response and on additional signs or symptoms of ocular allergy, including improvement in nasal symptoms. There were no serious ocular adverse events reported in patients dosed with Bepreve.

About Bepreve (bepotastine ophthalmic solution)

Assuming approval from the FDA, Bepreve would participate in ISTA's largest market to date. IMS Health estimates the U.S. ocular allergy market generated approximately $560 million in sales in 2007. Bepreve is a non-sedating, highly selective antagonist of the histamine (H1) receptor. It has a stabilizing effect on mast cells and it suppresses the migration of eosinophils into inflamed tissues. The compound's primary mechanisms of action are believed to make it an effective treatment against the signs and symptoms of allergic conjunctivitis.

Bepotastine was approved in Japan for use as a systemic drug in the treatment of allergic rhinitis and urticaria/pruritus in July 2000 and January 2002, respectively, and is marketed by Mitsubishi Tanabe Pharma Corporation (formerly Tanabe Seiyaku Co., Ltd.) under the brand name TALION(R). TALION was co-developed by Tanabe Seiyaku and Ube Industries, Ltd., who discovered bepotastine. In 2001, Tanabe Seiyaku granted Senju Pharmaceutical Co., Ltd., exclusive worldwide rights, with the exception of certain Asian countries, to develop, manufacture and market bepotastine for ophthalmic use. In 2006, ISTA licensed the exclusive North American rights from Senju to an eye drop formulation of bepotastine for the treatment of allergic conjunctivitis.

About ISTA Pharmaceuticals

ISTA Pharmaceuticals is an ophthalmic pharmaceutical company. ISTA's products and product candidates addressing the $4.7 billion U.S. prescription ophthalmic industry include therapies for inflammation, ocular pain, glaucoma, allergy, and dry eye. The Company currently markets three products and is developing a strong product pipeline to fuel future growth and market share, thereby continuing its growth to become the leading niche ophthalmic pharmaceutical company in the U.S. For additional information regarding ISTA, please visit ISTA Pharmaceuticals' website at http://www.istavision.com/.

Any statements contained in this press release that refer to future events or other non-historical matters are forward-looking statements. Without limiting the foregoing, but by way of example, statements contained in this press release related to the FDA's timely review and approval of Bepreve, ISTA's belief the FDA will review and take action on Bepreve within ten months of filing and ISTA's expectation of becoming the leading niche ophthalmic pharmaceutical company are forward-looking statements. Except as required by law, ISTA disclaims any intent or obligation to update any forward-looking statements. These forward-looking statements are based on ISTA's expectations as of the date of this press release and are subject to risks and uncertainties that could cause actual results to differ materially. Important factors that could cause actual results to differ from current expectations include, among others, delays and uncertainties related to the FDA or other regulatory agency approval or actions; uncertainties and risks regarding market acceptance of and demand for ISTA's approved products; and such other risks and uncertainties as detailed from time to time in ISTA's public filings with the U.S. Securities and Exchange Commission, including but not limited to ISTA's Annual Report on Form 10-K for the year ended December 31, 2007, and its most recent Quarterly Report on Form 10-Q for the quarter ended September 30, 2008.

Source: ISTA Pharmaceuticals, Inc.

CONTACT: Vince Anido, Ph.D., +1-949-788-5311, vanido@istavision.com; or Lauren Silvernail, +1-949-788-5302, lsilvernail@istavision.com, both of ISTA Pharmaceuticals; Investors: Juliane Snowden, jsnowden@burnsmc.com or Media: Justin Jackson, jjackson@burnsmc.com, both of Burns McClellan, +1-212-213-0006, for ISTA Pharmaceuticals

Web Site: http://www.istavision.com/

Posted: January 2009

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