The body naturally produces L-Carnitine in the brain, kidneys, liver and brain. L-Carnitine is mainly responsible for turning fat into energy. It is also essential for the body’s muscle movement, heart function and brain function. Supplementing L-Carnitine may boost the metabolism and aid in weight loss. It can allow your body to burn fat more efficiently, boost your endurance and stamina and help the body save more glycogen. It may also have some health benefits for the liver and could be therapeutic for viral hepatitis.