TABLE 4

Common Drugs That Are Known To Cause Prolongation of the QT Interval Should Be Avoided

Drugs and side effect(s)
Antibiotics: macrolides like erythromycin, azithromycin
Anticongestants: albuterol, ephedrine, pseudoephedrine
Antidepressant: citalopram, fluoxetine, sertraline, escitalopram, clomipramine, amitriptyline, nortriptyline
Antiemetic: ondansetron
Antifungals: voriconazole, ketoconazole, fluconazole
Antihistamine: astemizole, terfenadine, diphenhydramine
Appetite suppressants: phentermine, fenfluramine, sibutramine
Central nervous system stimulants: amphetamines, dexmethylphenidate, lisdexmethylphenidate.
Opiate agonist: methadone
  • A comprehensive list can be found on Web sites like crediblemeds.org and torsades.net.36,37