This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Most common drug used for prophylaxis of migraine is 
Select and explain. 
A. Sumatriptan, B. Propranolol, C. Valproate, D. Flunarizine
B: Propranolol
Answer: B: Propranolol 
Explanation: Ref: HL Sharma 3rd ed Pg no: 191 beta blockers are the first line of choice for chronic migraine or migraine prophylaxis