When your body needs energy, L-Carnitine plays an important role. By raising the level of muscle carnitine, you increase the rate at which fat is burned, and because your body becomes more efficient at processing fuel, it will also increase your energy levels. L-Carnitine is a potent fat burner because it is responsible for the transport of fatty acids into the cells (mitochondria) to be used for energy in the body. Elevating carnitine will also improve physical performance by reducing lactic acid build-up in the muscle and sparing glycogen reserves. L-Carnitine Tartrate can also help prevent oxidative stress build-up which can help improve vitality, help prevent heart problems, and help slow down the aging process. L-Carnitine is not a drug or a stimulant, but rather a natural dietary supplement.