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
Which of the following drugs is not an anticonvulsant? 
Select and explain. 
A. Phenytoin, B. Flunarizine, C. Topiramate, D. Phenobarbitone
B: Flunarizine
Answer: B: Flunarizine 
Explanation: Flunarizine is a weak calcium channel blocker used in the treatment of migraine. All the other drugs are used as anti convulsant. Ref: K D TRIPATHHI 8TH ED.Page no 222, 305