This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Which of the following drugs is not used in opioid dependence? 
Select and explain. 
A. Disulfiram, B. Clonidine, C. Lorazepam, D. Naltrexone
A: Disulfiram
Answer: A: Disulfiram 
Explanation: Treatment of opioid dependence 
1)   Detoxification (treatment of withdrawal syndrome)

Methadone is the DOC
Alternatives:- Buprenorphine, LAAM, clonidine, clonidine with naltrexone with or without benzodiazepines (Lorazepam, oxazepam), Lofexidine, Dextropropoxyphene, diphenoxylate.

2)   Maintenance (to prevent relapse)

Methadone is the DOC
Alternatives:- Buprenorphine, LAAM, opioid antagonists (Naltrexone).