Torsades List
Drugs with a Risk of Torsades de Pointes
Substantial evidence supports the conclusion that these drugs prolong the QT interval and have a risk of TdP when used as directed in labeling.
Possible Torsades List
Drugs with a Possible Risk of Torsades de Pointes
Substantial evidence supports the conclusion that these drugs cause QT prolongation but there is insufficient evidence that they, when used as directed in labeling, have a risk of causing TdP.
Conditional Torsades List
Drugs with a Conditional Risk of Torsades de Pointes
Substantial evidence supports the conclusion that these drugs prolong the QT interval and have a risk of TdP but only under certain known conditions (e.g. excessive dose, drug interaction, etc.).
