Which antihistamines should be avoided by patients with long QT syndrome (LQTS)?

Updated: Nov 29, 2017
  • Author: Ali A Sovari, MD, FACP, FACC; Chief Editor: Mikhael F El-Chami, MD  more...
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Antihistamines to be avoided include the following:

  • Terfenadine (Seldane [recalled from US market]): For allergies
  • Astemizole (Hismanal [recalled from US market]): For allergies
  • Diphenhydramine (Benadryl): For allergies

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