Amiodarone, cimetidine, clarithromycin, delavirdine, diltiazem, dirithromycin, disulfiram, fluoxetine, fluvoxamine, grapefruit juice, indinavir, itraconazole, ketoconazole, nefazodone, nevirapine, propoxyphene, quinupristin, dalfopristin, ritonavir, saquinavir, verapamil, zafirlukast, zileuton, salmeterol, St. John's wort.