Buprenorphine is an opioid used to treat opioid use disorder, acute pain, and chronic pain. It can be used under the tongue, in the cheek, by injection, as a skin patch, or as an implant.
Buprenorphine patches in the pouch with packaging: A removed patch is shown on the left. In Britain, buprenorphine patches are named Butec 5, Butec 10, and so on.