27. Patients currently taking carbamazepine, phenobarbital, rifampin, aminoglutethimide, nafcillin, nevirapine, phenytoin, azole antifungals, clarithromycin, diclofenac, doxycycline, erythromycin, imatinib, isoniazid, nefazodone, nicardipine, propofol, protease inhibitors, quinidine, telithromycin, or verapamil