This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pharmacology
[{'content': 'Verapamil is associated with all except? \nSelect and explain. \nA. Constipation, B. Headache, C. Bradycardia, D. Hyperglycemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. HyperglycemiaVerapamil is calcium channel blocker. CCB are safe in diabetic patients whereas thiazides and beta blockers should be avoided.', 'role': 'assistant'}]