- Pts currently taking drugs that are generally accepted to have risk of causing Torsades de Pointes including: quinidine, procainamide, disopyramide; amiodarone, sotalol, ibutilide, dofetilide; erythromycins, clarithromycin; chlorpromazine, haloperidol, mesoridazine, thioridazine, pimozide; cisapride, bepridil, droperidol, methadone, arsenic, chloroquine, domperidone, halofantrine, levomethadyl, pentamidine, sparfloxacin, lidoflazine