L-Carnitine fumarate is widely used as a dietary supplement to support energy production and metabolism. It plays a crucial role in transporting fatty acids into the mitochondria, where they are converted into energy, making it beneficial for individuals seeking improved physical performance and endurance. This compound is often included in fitness and weight management products to enhance fat burning and reduce fatigue during exercise. Additionally, it is utilized in medical and therapeutic settings to address conditions associated with carnitine deficiency, such as muscle weakness or heart-related issues. Its antioxidant properties also contribute to reducing oxidative stress, promoting overall cellular health.