Uses: This medication contains 2 medicines: buprenorphine and naloxone. It is used to treat narcotic (opioid) dependence/addiction. Buprenorphine belongs to a class of drugs called mixed narcotic agonist-antagonists. Buprenorphine helps prevent withdrawal symptoms caused by stopping other opiate-type narcotics. Naloxone is a narcotic antagonist that blocks the effect of narcotics and can cause severe narcotic withdrawal when injected. Withdrawal is less likely when naloxone is taken by mouth or dissolved under the tongue. It is combined with buprenorphine to prevent abuse and misuse (injection) of this medication. This combination medication is used as part of a complete treatment program for drug abuse (such as compliance monitoring, counseling, behavioral contract, lifestyle changes). This medication should not be used for pain relief. Serious, possibly fatal, breathing problems may occur.