Suboxone 2 mg is a medicine to treat dependence on opioid drugs such as heroin or morphine in drug addicts who have agreed to be treated for their addiction. The medicine contain 2 medicines : buprenhorphine and naloxone. Buprenhorphine helps prevent withdrawal symptoms caused by stopping other opioids. Naloxone is opioid antagonist that blocks the effect of opioids and can cause severe opioid withdrawal symptoms. This combination medications is used as a part of complete treatment program for opioid use disorder.