Inducers (+) Substrates Inhibitors (–)
Chronic alcohol use
St. John’s wort
Phenytoin
Phenobarbital
Nevirapine
Rifampin
Griseofulvin
Carbamazepine		 Anti-epileptics
Theophylline
Warfarin
OCPs		 Sodium valproate
Isoniazid
Cimetidine
Ketoconazole
Fluconazole
Acute alcohol abuse
Chloramphenicol
Erythromycin (macrolides)
Sulfonamides
Ciprofloxacin
Omeprazole
Metronidazole