Nature’s Bounty L-Carnitine 500mg is a dietary supplement designed to support fat metabolism and heart health. L-Carnitine is an amino acid derivative that plays a crucial role in transporting fatty acids into the mitochondria, where they are oxidized to produce energy. L-Carnitine is naturally produced in the body and is also obtained from dietary sources. It is essential for the transport of long-chain fatty acids into the mitochondria, facilitating their conversion into energy. This process is vital for muscle function and overall energy production.