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: Pharmacology
[{'content': 'Durgs used in migraine prophylaxis are all except \nSelect and explain. \nA. Flunarizine, B. Propranolol, C. Cyproheptadine, D. Sumatriptan', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Sumatriptan Sumatriptan is DOC for acute severe migraine. It is not indicated for prophylaxis of migraine attacks.", 'role': 'assistant'}]