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Oxecta

Generic name: oxycodone
Treatment for: Pain

Update: Oxecta (oxycodone) Now FDA Approved - June 17, 2011

NDA Submitted for Acurox

New Drug Application Submitted For Acurox Tablets

Opioid Analgesic Product Designed to Deter Prescription Drug Abuse

PALATINE, Ill. and BRISTOL, Tenn., Jan. 2, 2009 (GLOBE NEWSWIRE) -- Acura Pharmaceuticals, Inc. and King Pharmaceuticals, Inc. today announced that Acura has submitted a New Drug Application (NDA) for Acurox (oxycodone HCl/niacin) Tablets to the U.S. Food and Drug Administration (FDA) including a request for priority review. The FDA is expected to determine whether to accept the NDA for filing and consider the priority review request within 60 days. If approved, Acura and King believe Acurox will be the first FDA approved immediate release opioid analgesic designed to deter swallowing excess quantities of tablets and other common methods of misuse and abuse. According to the National Survey on Drug Use and Health published by the Substance Abuse and Mental Health Services Administration in 2006, immediate-release opioids are abused 10 times more frequently than extended-release opioids.1

About Acurox Tablets and the NDA Submission

Acurox, a patented, orally administered, immediate release tablet containing oxycodone HCl as its sole active analgesic ingredient, has a proposed indication for the relief of moderate to severe pain. Acurox utilizes Acura's patented Aversion Technology, which is designed to deter misuse and abuse by intentional swallowing of excess quantities of tablets, intravenous injection of dissolved tablets and nasal snorting of crushed tablets. The NDA submission for Acurox Tablets includes positive results from the following studies and a proposed product label describing these studies:

* a pivotal Phase III clinical efficacy and safety study conducted pursuant to an FDA agreed Special Protocol Assessment with statistically significant (p?0.0001) primary efficacy endpoints;

* three clinical studies assessing the abuse-liability potential of Acurox, demonstrating with statistical significance that subjects with a history of opioid abuse disliked Acurox compared to immediate release oxycodone HCl alone when snorting crushed tablets or swallowing excess numbers of tablets; and

* two laboratory studies assessing the difficulty of intravenously injecting the oxycodone active opioid ingredient contained in Acurox Tablets.

About Aversion Technology

Aversion Technology is a patented composition of active and inactive ingredients intended to relieve moderate to severe pain and deter common methods of prescription drug abuse, including intravenous injection of dissolved tablets, nasal snorting of crushed tablets, and intentional swallowing of excess numbers of tablets.

About Prescription Drug Abuse

The misuse, abuse and diversion of opioid containing pain medications has become widespread in the U.S. and poses a costly and significant public health issue. In addition to the often harmful impact on abusers and their families the estimated cost associated with prescription opioid abuse, including health care, justice, and work-related costs, totaled $9.5 billion in 2005.2 The pain relief medicines that Acura is developing with King are designed to address this rapidly growing problem.

About King Pharmaceuticals, Inc.

King, headquartered in Bristol, Tennessee, is a vertically integrated branded pharmaceutical company. King, an S&P 500 Index company, seeks to capitalize on opportunities in the pharmaceutical industry through the development, including through in-licensing arrangements and acquisitions, of novel branded prescription pharmaceutical products and technologies that complement the Company's focus in specialty-driven markets, particularly neuroscience, hospital and acute care. King is also a leader in the development, registration, manufacturing and marketing of pharmaceutical products for food producing animals.

About Acura Pharmaceuticals, Inc.

Acura Pharmaceuticals, Inc. is a specialty pharmaceutical company engaged in research, development and manufacture of innovative Aversion (abuse deterrent) Technology and related product candidates. Acura entered into a License, Development and Commercialization Agreement (the "Agreement") with King Pharmaceuticals, Inc. in October 2007 pursuant to which the Companies are now jointly developing Acurox and three additional Aversion Technology immediate release opioid product candidates. The Agreement provides King with an option to license all opioid analgesic products utilizing Aversion Technology for development and commercialization in the United States, Canada and Mexico.

The Acura Pharmaceuticals, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4847

Forward Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (the "Act"). When used in this press release, the words "estimate," "project," "anticipate," "expect," "intend," "believe," and similar expressions are intended to identify forward-looking statements. Acura Pharmaceuticals, Inc. and King Pharmaceuticals, Inc. disclaim any intent or obligation to update these forward-looking statements, and claim the protection of the Safe Harbor for forward-looking statements contained in the Act. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements to be materially different from any future results, performance, or achievements expressed or implied by such forward-looking statements. These risk factors include, but are not limited to, the timing and ability to gain FDA filing acceptance for the Acurox Tablets NDA, the timing and results of FDA's review for the request for priority review of the Acurox Tablets NDA, the expectation that Acurox Tablets will be the first FDA approved immediate release opioid analgesic indicated for relief of moderate to severe pain designed to deter common methods of abuse, the plans and ability to develop, obtain regulatory approvals, manufacture and commercialize Acurox Tablets and the other Aversion Technology opioid product candidates, the ability to avoid infringement of patents, trademarks and other proprietary rights of third parties, the market size, market potential, and competition for Acurox and the other Aversion Technology opioid product candidates, and the ability to gain FDA approval of product labeling for the proposed indication or the abuse deterrent features and benefits of Acurox. You are encouraged to review these and other risks and uncertainties detailed in each company's respective 2007 SEC Form 10-K and September 30, 2008 SEC Form 10-Q.

(1) National Survey on Drug Use and Health Report, Issue 22, 2006 (2) Birnbaum HG, White AG, Reynolds JL, et al. Estimated Costs of Prescription Opioid Analgesic Abuse in the United States in 2001. Clin J Pain 2006; 22(8).

-0- CONTACT: King Pharmaceuticals James E. Green Executive Vice President, Corporate Affairs 423-989-8125 David E. Robinson, Senior Director, Corporate Affairs 423-989-7045

Acura Pharmaceuticals Contact: Peter A. Clemens, SVP Investor Relations & CFO 847-705-7709

Posted: January 2009

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