This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Which of the following is not used in the treatment of thyroid storm \nSelect and explain. \nA. Potassium iodide, B. Reserpine, C. Propanolol, D. Calcium channel blockers', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Refer Katzung 11/e p 677. Propanolol to control severe cardiovascular manifestations Calcium channel blockers are used if b-blockers are contraindicated as in asthmantics Iodides to inhibit the release big thyroid hormones from the gland', 'role': 'assistant'}]