| Cimetidine, ciprofloxacin, clarithromycin, erythromycin, fluvoxamine, gemfibrozil, isoniazid, ketoconazole, zileuton | |
| Conivaptan, cyclosporine, erythromycin, itraconazole, ketoconazole, quinidine, ritonavir, st. johns wort, verapamil | |
| Amiodarone, disopyramide, dronedarone, procainamide, quinidine, sotalol | |
| 6-12 mcg/mL |