L-Carnitine is an amino acid suggested to promote growth and development, fat-burning, energy, and improved resistance to muscle fatigue. It is also great in dieting, as it may help reduce feelings of hunger and weakness. L-Carnitine may play a critical metabolic role in promoting healthy body composition, as it helps transport fats to the mitochondria where they are burned for energy. Clinical research has suggested L-Carnitine promotes athletic performance and endurance. Through supporting a greater reliance on fat for energy, the body reduces depletion of muscle glycogen. This combined with the reduction of lactic acid accumulation in muscles may extend exercise capacity before fatigue.