Suboxone is a medication used to treat opioid dependence. It is a combination of two drugs: buprenorphine and naloxone. Buprenorphine is a partial opioid agonist that binds to the same receptors in the brain as opioids, but it produces a weaker effect. Naloxone is an opioid antagonist that blocks the effects of opioids. The combination of these two drugs in Suboxone helps to reduce withdrawal symptoms, cravings, and the risk of overdose in people who are dependent on opioids.