This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Psychiatry
[{'content': 'Which of the following drug is not used in the treatment of akathisia? \nSelect and explain. \nA. Benzodiazepam, B. Propranolol, C. Trihexyphenidyl, D. Haloperidol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Akathisia refers to somatic restlessness which occur in patients treated with first generation antipsychotics. Among the options given haloperidol is an old generation antipsychotic which causes a side effect of akathisia. Drugs commonly used to treat akathisia are propranolol, benzodiazepines and anticholinergics. REF : Oxford text book of psychiatry 3rd Ed.', 'role': 'assistant'}]