This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Drugs used in alcohol withdrawal are all, except: \nSelect and explain. \nA. Naltrexone, B. Naloxone, C. Acamprosate, D. Disulfiram', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Naloxone is used to block the action of endogenous opioid peptides. All the others are used for alcohol withdrawal. Ref KD Tripathi 8th ed.', 'role': 'assistant'}]