In this ATTC workshop, participants will get an overview of the recent epidemiology of opioid (pharmaceutical and heroin) abuse and addiction as well as a quick review of the signs and symptoms of the acute and chronic use of opioids and withdrawal symptomatology. The bulk of the presentation will focus on the details of use of and patient response to the various FDA approved medications for the treatment of opioid addiction – buprenorphine, methadone and naltrexone.