• Klasse Ia antiarytmika (f. eks. quinidin, hydroquinidin, disopyramid). • Klasse III antiarytmika (f. eks. amiodaron, sotalol, dofetilid, ibutilid). • Nogle antipsykotika (f. eks. thioridazin, chlorpromazin, levomepromazin, trifluperazin, cyamemazin, sulpirid, sultoprid, amisulprid, tiaprid, pimozid, haloperidol, droperidol). • Andre (f. eks. bepridil, cisaprid, diphemanil, erythromycin IV, halofantrin, mizolastin, pentamidin, terfenadin, vincamin IV).
• Class Ia antiarrythmics (eg quinidine, hydroquinidine, disopyramide). • Class III antiarrythmics (eg amiodarone, sotalol, dofetilide, ibutilide). • Some antipsychotics (eg thioridazine, chlorpromazine, levomepromazine, trifluoperazine, cyamemazine, sulpiride, sultopride, amisulpride, tiapride, pimozide, haloperidol, droperidol). • Others (eg bepridil, cisapride, diphemanil, erythromycin IV, halofantrin, mizolastin, pentamidine, terfenadine, vincamine IV).