Used primarily in the treatment of atrial fibrillation and atrial flutter, this compound is administered intravenously to convert these abnormal heart rhythms back to normal sinus rhythm. It is especially utilized in acute settings where rapid cardioversion is needed. The compound works by prolonging the action potential duration and refractory period in cardiac tissue, making it effective for managing certain types of arrhythmias. Due to its potential to cause proarrhythmic effects, such as torsades de pointes, its use is restricted to monitored clinical environments with access to emergency equipment.