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': 'b blocker with peripheral vasodilator action is ? \nSelect and explain. \nA. Carvedilol, B. Propranolol, C. Atenolol, D. Acebutalol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Carvedilol o Carvedilol is a (31 + 132 + ai adrenoceptor blocker with a : 13 blocking propey of 1 : 9. o It produces peripheral vasodilation due to a-1 blockade as well as calcium channel blockade (direct effect).", 'role': 'assistant'}]