Acura Pharmaceuticals, Inc., a specialty pharmaceutical company, engages in the research, development, and manufacture of pharmaceutical product candidates utilizing its proprietary Aversion Technology, Impede Technology, and other technologies. Its Aversion Technology is a proprietary platform technology providing abuse deterrent features and benefits to orally administered pharmaceutical drug products containing abusable active ingredients, such as tranquillizers, stimulants, sedatives, decongestants, and various other opioid analgesics. The company?s lead product candidate, Acurox Tablet, is an orally administered immediate release tablet containing oxycodone HCl as its active analgesic ingredient. Its opioid analgesic product candidates are used to relieve pain while discouraging common methods of opioid product misuse and abuse, including intravenous injection of dissolved tablets or capsules; nasal snorting of crushed tablets or capsules; and intentional swallowing of excess quantities of tablets or capsules. The company is also investigating and developing mechanisms to incorporate abuse deterrent characteristics into abused and misused pharmaceutical products through laboratory testing of a product candidate developed with its Impede Technology, which is intended to inhibit the conversion of pseudoephedrine HCl into methamphetamine. Acura Pharmaceuticals, Inc. has a license, development, and commercialization agreement with King Pharmaceuticals Research and Development, Inc. to develop and commercialize various opioid analgesic products utilizing the company?s proprietary Aversion Technology in the United States, Canada, and Mexico. The company was founded in 1935 and is based in Palatine, Illinois.