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': 'Best drug for chronic gout in patient with renal impairment is - \nSelect and explain. \nA. Naproxen, B. Probenecid, C. Allopurinol, D. Sulfinpyrazone', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Allopurinol o NSAIDs like naproxen have no role in chronic gout. o Uricosuric drugs like probenecid and sulfinpyrazone are ineffective in the presence of renal insufficiency. o Allopurinol is drug of choice for most cases of chronic gout.", 'role': 'assistant'}]