Buprenorphine is one of just three federally approved medications to treat opioid addiction. It’s possible to misuse it because it’s an opioid itself — people snort or inject the medication to get high. And patients with prescriptions can sell or give it away, which is known as diversion. But addiction treatment professionals argue the problem of buprenorphine diversion is often misunderstood. The black market exists, in part, because addiction treatment can be hard to find, and the availability of the drug on the street can be helpful, they say.