Strong & moderate CYP3A4 inhibitors/inducers. Increased bioavailability w/ ciclosporin. Increased clearance & decreased C
max & AUC of midazolam. Increased blood levels w/ fluconazole, erythromycin, verapamil, nicardipin, diltiazem, nelfinavir, indinavir, amprenavir. Increased metabolism & decreased blood levels w/ St. John's wort, carbamazepine, phenobarb, phenytoin, efavirenz, nevirapine. Grapefruit juice; live vaccines.