CYP 450 inducers are: (A) Cimetidine, (B) Ketokonazole, (C) Phenobarbitone, (D) Theoplylline
Answer is C. P-450 inducers are: Phenobarbitone, rifampicin, phenytoin, chloe hydrate, phenylbutazone, griseofulvin, DDT, an chronic alcohol ingestion. Ketoconazole and cimetidine inhibit the drug metabolizing enzymes. Ref-KDT 7/e p26