New Formulation of OxyContin (image) Washington University School of Medicine Share Print E-Mail Caption The prescription painkiller OxyContin comes in several different dosages, including this 80 mg version. An abuse-deterrent formulation of the OxyContin (left), introduced in 2010, has curtailed its illicit use, but about 25 percent of drug abusers entering rehab still abuse the drug, according to new research at Washington University School of Medicine in St. Louis. Credit US Drug Enforcement Administration Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.