This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
[{'content': 'The microsomal enzyme involved in the metabolism of omeprazole is \nSelect and explain. \nA. CYP 2A, B. CYP 2C19, C. CYP 2C8, D. CYP 2B', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Omeprazole and clopidogrel are mainly metabolized by CYP2C19.Other drugs metabolized by this enzyme are anti anxiety drugs like diazeoam. Induced by drugs rifampicin and barbituates. Ref: KATZUNG; 13th ed / Page: 80', 'role': 'assistant'}]