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Drugs That Prolong the Q-T Interval and/or Induce Torsades de Pointes
Raymond L. Woosley, MD, PhD

Information from the medical literature, the FDA-approved drug labeling and reports submitted to the FDA Adverse Events Reporting System database.

  Browse by clicking on the first letter of the drug's brand or generic name:

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Generic Name Ephedrine More Info
Brand Name(s) Broncholate®,Rynatuss®
Drug Class Bronchodilator, decongestant
QT
TdP
Risk Group A drug to be avoided for use in patients with diagnosed or suspected Congenital Long QT Syndrome.
Comments

   
   



Generic Name Galantamine More Info
Brand Name(s) Reminyl®
Drug Class Cholinesterase inhibitor
QT
TdP
Risk Group A drug that, in some reports, has been weakly associated with Torsades de Pointes but that, when used in usual dosages, is unlikely to be a risk for Torsades de Pointes.
Comments

   
   



Generic Name Methylphenidate More Info
Brand Name(s) Concerta® ,Ritalin®
Drug Class CNS stimulant
QT
TdP
Risk Group A drug to be avoided for use in patients with diagnosed or suspected Congenital Long QT Syndrome.
Comments

   
   



Generic Name Ranolazine More Info
Brand Name(s) Ranexa®
Drug Class Anti-anginal
QT
QT prolongation is mentioned in the FDA-approved labeling as a known action of the drug.
TdP
Risk Group A drug that may prolong the QT interval but at this time lacks substantial evidence for causing Torsades de Pointes. This drug should be avoided for use in patients with diagnosed or suspected Congenital Long QT Syndrome.
Comments

   
   



Generic Name Risperidone More Info
Brand Name(s) Risperdal®
Drug Class Anti-psychotic
QT
QT prolongation is mentioned in the FDA-approved labeling as a known action of the drug.
TdP
Risk Group A drug that may prolong the QT interval but at this time lacks substantial evidence for causing Torsades de Pointes. This drug should be avoided for use in patients with diagnosed or suspected Congenital Long QT Syndrome.
Comments

   
   



Generic Name Ritodrine More Info
Brand Name(s) Yutopar®
Drug Class Uterine relaxant
QT
TdP
Risk Group A drug to be avoided for use in patients with diagnosed or suspected Congenital Long QT Syndrome.
Comments

   
   



Generic Name Roxithromycin* More Info
Brand Name(s) Rulide®
Drug Class Antibiotic
QT
TdP
Risk Group A drug that may prolong the QT interval but at this time lacks substantial evidence for causing Torsades de Pointes. This drug should be avoided for use in patients with diagnosed or suspected Congenital Long QT Syndrome.
Comments

*not available in the United States
   
   



  A note about Brand Names: Drugs are listed with up to 2 common brand names. There are many more brand names for some of the common drugs, such as pseudoephedrine and erythromycin. It is also important to look at the list of active drugs in medicines that contain a combination of drugs such as Zyrtec-D®, which contains pseudoephedrine.
 
 

The University of Arizona Center for Education and Research on Therapeutics
Arizona Health Sciences Center
Tucson, Arizona 85724-5018

Funded in part by Agency for Healthcare Research and Quality grant 1 U18 HS10385-01

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