L-Carnitine L-Tartrate is a form of L-carnitine, a naturally occurring compound that plays a crucial role in energy production by facilitating the transport of fatty acids into the mitochondria, where they are burned for energy. L-Carnitine L-Tartrate is commonly used as a dietary supplement to support energy metabolism, improve physical performance, and aid in fat burning. The tartrate form is known for its faster absorption and utilization in the body, making it popular in sports nutrition and bodybuilding.