Drugs commonly involved	Other drugs†
Disopyramide Dofetilide Ibutilide Procainamide Quinidine Sotalol Bepridil	Amiodarone Anti-infective agents: clarithromycin, erythromycin, halofantrine, pentamidine, sparfloxacin Antiemetic agents: domperidone, droperidol Antipsychotic agents: chlorpromazine, haloperidol, mesoridazine, thioridazine, pimozide Arsenic trioxide Cisapride Lidoflazine‡ Methadone