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': 'Isoniazide is metabolized by ? \nSelect and explain. \nA. Acetylation, B. Oxidation, C. Reduction, D. Hydrolysis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Acetylation Isoniazid is extensively metabolized in liver most impoant pathway being N - acetylation by NAT The acetylated metabolite is excreted in urine. Drugs metabolized by acetylation Sulfonamides (including dapson) Procainamide PAS INH Hydralazine", 'role': 'assistant'}]