Thuốc kéo dài khoảng QT

Sotalol

Ibutilide, dofetilide, sematilide

Disopyramide

Procainamide

Quinidine

Amiodaroneb

Erythromycin, clarithromycin, telithromycin, azithromycin

Ketoconazole, itraconazole

Quinolones (sparfloxacin, moxifloxacin, gatifloxacin, gemifloxacin, levofloxacin)

Phenothiazines (chlorpromazine, droperidol, haloperidol, thioridazine)

Fosphenytoin

Methadone

Pentamidine

Probucol

Quetiapine

Risperidone

Arsenic trioxide

Astemazolec

Bepridil, mibefradil

SSRI (venlafaxine)

Terfinadinec

Tricyclic antidepressants

Trimethoprim-sulfamethoxazole

bRisk of torsade is low.

cNot available in the U.S.