Table 2.
Drug | Indication for Use | Comments |
Amiodarone | Antiarrhythmic/abnormal heart rhythm | Females > males, TdP risk regarded as low |
Arsenic trioxide | Anticancer/leukemia | |
Astemizole | Antihistamine/allergic rhinitis | No longer available in the United States |
Bepridil | Antianginal/heart pain | Females > males |
Chloroquine | Antimalarial/malaria infection | |
Chlorpromazine | Antipsychotic/antiemetic/schizophrenia/nausea | |
Cisapride | GI stimulant/heartburn | Restricted availability, females > males |
Clarithromycin | Antibiotic/bacterial infection | |
Disopyramide | Antiarrhythmic/abnormal heart rhythm | Females > males |
Dofetilide | Antiarrhythmic/abnormal heart rhythm | |
Domperidone | Antinausea/nausea | Not available in the United States |
Droperidol | Sedative, antinausea/anesthesia adjunct, nausea | |
Erythromycin | Antibiotic, GI stimulant/bacterial infection, increase | Females > males |
GI motility | ||
Halofantrine | Antimalarial/malaria infection | Females > males |
Haloperidol | Antipsychotic/schizophrenia, agitation | When given intravenously or at higher-than-recommended doses, risk of sudden death, QT prolongation, and TdP increases |
Ibutilide | Antiarrhythmic/abnormal heart rhythm | Females > males |
Levomethadyl | Opiate agonist/pain control, narcotic dependence | |
Mesoridazine | Antipsychotic/schizophrenia | |
Methadone | Opiate agonist/pain control, narcotic dependence | Females > males |
Pentamidine | Antiinfective/pneumocystis pneumonia | Females > males |
Pimozide | Antipsychotic/Tourette's tics | Females > males |
Probucol | Antilipemic/hypercholesterolemia | No longer available in the United States |
Procainamide | Antiarrhythmic/abnormal heart rhythm | |
Quinidine | Antiarrhythmic/abnormal heart rhythm | Females > males |
Sotalol | Antiarrhythmic/abnormal heart rhythm | Females > males |
Sparfloxacin | Antibiotic/bacterial infection | |
Terfenadine | Antihistamine/allergic rhinitis | No longer available in the United States |
Thioridazine | Antipsychotic/schizophrenia |
Adapted with permission from Arizona Center for Education and Research on Therapeutics.13 Readers should check for updates at www.qtdrugs.org/medical-pros/drug-lists/bycategory.cfm, as the information is subject to frequent change.
Abbreviations: GI = gastrointestinal, TdP = torsades de pointes.