[WILL NEED TO UPDATE THE FIGURE BY REMOVING SOME AND ADDING OTHERS] Although the type Ia and type III antiarrhythmic drugs are the most common causes of drug induced torsade, the arfrhythmia has been associated with a wide variety of other drugs and toxins, some of which are shown here. The list continues to grow and change as new drugs are introduced to treat both cardiac and non cardiac diseases and as other drugs become unavailable.