L-carnitine

L-carnitine is a naturally occurring amino acid derivative that’s often taken as a supplement. L-carnitine helps the body produce energy. It is important for heart and brain function, muscle movement, and many other body processes. Carnitine is a quaternary ammonium compound involved in metabolism in most mammals, plants, and some bacteria. In support of energy metabolism, carnitine transports long-chain fatty acids into mitochondria to be oxidized for energy production, and also participates in removing products of metabolism from cells. Given its key metabolic roles, carnitine is concentrated in tissues like skeletal and cardiac muscle that metabolize fatty acids as an energy source. It is used for weight loss and may have an impact on brain function.