Benziodarone is primarily used as an antiarrhythmic agent in the treatment of cardiac rhythm disorders. It works by prolonging the action potential duration and refractory period in cardiac tissues, helping to stabilize irregular heartbeats. It is particularly effective in managing ventricular arrhythmias and certain supraventricular tachyarrhythmias. Due to its potent activity and long half-life, it is often reserved for patients who do not respond adequately to other antiarrhythmic therapies. The compound’s iodine-containing structure contributes to its unique pharmacokinetic profile, though careful monitoring is required due to potential thyroid-related side effects.