This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Pharmacology), Subject name: Pharmacology
[{'content': 'Which is not a uricosuric drug? \nSelect and explain. \nA. Allopurinol, B. Probenecid, C. Sulphinpyrazone, D. Benzbromarone', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A. AllopurinolUricosuric drugs are those which don't effect the synthesis of uric acid and they cause the secretion of it urine. All the drugs, except allopurinol is uricosuric. Allopurinol is drug which inhibit the xanthine oxidase enzyme which further decrease the production of uric acid. It is drug of choice for chronic gout.", 'role': 'assistant'}]