Bunaftide is primarily used in the pharmaceutical industry as an antiarrhythmic agent. It is effective in managing and treating certain types of irregular heartbeats, particularly ventricular arrhythmias. The compound works by stabilizing the electrical activity of the heart, helping to restore normal rhythm and prevent potentially life-threatening complications. It is often administered in clinical settings under medical supervision to ensure proper dosing and monitoring of its effects on cardiac function. Additionally, Bunaftide may be used in research studies to further understand its mechanisms and potential applications in cardiovascular health.