Carnitine is a naturally occurring compound that plays a crucial role in energy production within the body. It helps transport fatty acids into the mitochondria, the powerhouse of cells, where they are converted into energy. This process is essential for maintaining proper metabolism and supporting physical activity. There are two main forms of carnitine: L-carnitine, which is found in food sources like red meat and dairy, and D-carnitine, which is less common and not as biologically active. Some people take carnitine supplements to enhance athletic performance or support weight loss, although scientific evidence on these benefits varies.