Your dog's heart works hard and L Carnitine helps fuel every beat. This natural protein like substance supports healthy heart function by helping carry fatty acids to where the body needs them most. From brain to muscle, L Carnitine plays a key role in energy metabolism, endurance, and recovery by supporting efficient fat to energy conversion. L Carnitine vs L Arginine: Understanding Their Differences and Benefit Fitness Health L Carnitine 2000 mg 120 Capsules