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': 'All of the following agents are used for prophylaxis of migraine, Except - \nSelect and explain. \nA. Propanalol, B. Valproate, C. Topiramate, D. Ethosuxamide', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Ethosuxamide Propanolol is the most commonly used drug for migraine prophylaxis. Anticonvulsants used for migraine prophylaxis are valproate, Gabapentine and topiramate (not ethosuxamide).", 'role': 'assistant'}]