Acura Pharmaceuticals, Inc., a specialty pharmaceutical company, engages in the research, development, and manufacture of pharmaceutical product candidates utilizing its proprietary Aversion and Impede 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, and decongestants. The company offers OXECTA Tablets CII, which are oral formulations of oxycodone HCl for the management of acute and chronic moderate to severe pain; and Impede PSE, a pseudoephedrine hydrochloride tablet product candidate. It is also developing opioid analgesic product candidates, which would be 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. In addition, the company investigates and develops mechanisms to incorporate abuse deterrent features into abused and misused pharmaceutical products using its Impede Technology. Acura Pharmaceuticals, Inc. has a license, development, and commercialization agreement with King Pharmaceuticals Research and Development, Inc. to develop and commercialize certain 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.