flecainide, primidone, tranylcypromine, phenytoin, tricyclic antidepressant, indinavir, pimozide, clomipramine, spironolactone, ergotamine, terazosin, verapamil, dihydroergotamine, isoproterenol, itraconazole, thioridazine, labetalol, prochlorperazine, antiemetic, thiazide, chlorpromazine, acetylsalicylic acid, lopid, amiodarone, pentoxifylline, ketorolac, anticonvulsants, racemic, ipratropium bromide, antiarrhythmic drug, enalapril, chlorthalidone, nardil, nefazodone, nifedipine, hypnotics, hydroxychloroquine, sporanox, alpha blocker, premedication, cefuroxime, buspirone, leflunomide, hydrobromide, piroxicam, medroxyprogesterone, lopressor, nitrofurantoin, lanoxin, hydroxyzine, tofranil, antipyretic, angiotensin converting enzyme inhibitor, ethambutol, chlorpheniramine, ddi, aminophylline, maleate, atarax, angina pectoris, procardia, mevacor, cataflam, griseofulvin, acetazolamide, hepatotoxicity, phenelzine, glyburide, dihydrochloride, captopril, nelfinavir, inderal, triazolam, gemfibrozil, tagamet, tambocor, monohydrate, sulindac, lovastatin, nadolol, metronidazole, nicotinic acid, hypomagnesemia, prazosin, miconazole, indomethacin, emend, nitroprusside, mellaril, monoamine oxidase inhibitor, bacitracin, pyridoxine, clozapine, tenormin, hydrocortisone, bromocriptine, vasoactive, indocin, capoten, ipratropium, hypokalemia, streptokinase, phenobarbital, digoxin, morphine, quinine, atropine, caffeine, lidocaine, salicylate, epinephrine, penicillin, aspirin, chloramphenicol, corticosteroid, corticosteroids, diazepam, glucagon, nicotine, propranolol, tetracycline, cyclosporine, carbamazepine, amphetamine, cimetidine, furosemide, valproic, cyclophosphamide, ascorbic, isoniazid

cinchona bark, jesuit's bark, peruvian bark