Suboxone is a prescription medication used to treat opioid dependence. It contains a combination of buprenorphine and naloxone. Buprenorphine is a partial opioid agonist, and Naloxone is an opioid antagonist, which blocks the effects of opioids and prevents misuse of the medication. It activates the same receptors in the brain as opioids but to a lesser extent, helping to reduce cravings and withdrawal symptoms.