The drug which is used for long-term maintenance in opioid addiction -: (A) Naloxone, (B) Nalorphine, (C) Butarphanol, (D) Methadone
Answer is D. Drugs for long-term maintenance for opioid dependence (addiction) :- Methadone is the DOC. Alternatives are buprenorphine, LAAM, opioid antagonists (naltrexone).