Purchase Suboxone 8 mg online for opioid withdrawal and enjoy the convenience of receiving your same-day prescription without any delays. Suboxone is a medication used to treat opioid dependence and addiction. It contains a combination of two active ingredients: buprenorphine and naloxone. Buprenorphine is a partial opioid agonist, which means it binds to the same receptors in the brain as opioids but produces less euphoria and physical dependence.