Suboxone is buprenorphine and naloxone. The buprenorphine part is an opioid medication and is similar to other opioids such as morphine, codeine, and heroin, however, it produces less euphoric ("high") effects. The naloxone part blocks the effects of opioids such as morphine, codeine, and heroin. This is why it is used to help break an addition to opioids. Perhaps your doctor chose this medication because he feels you'd be less likely to develop an addiction to it than with other opioids.