The microsomal enzyme involved in the metabolism of omeprazole is: (A) CYP 2A, (B) CYP 2C19, (C) CYP 2C8, (D) CYP 2B
Answer is B. 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