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
All of the following agents are used for prophylaxis of migraine, Except - 
Select and explain. 
A. Propanalol, B. Valproate, C. Topiramate, D. Ethosuxamide
D: Ethosuxamide
Answer: D: Ethosuxamide 
Explanation: 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).