L-carnitine 500 capsules contain the amino acid L-carnitine, which participates in fat burning processes and energy metabolism. In the case of L-carnitine deficiency in the body, fats are not used to create energy, but are increasingly deposited in the form of subcutaneous fat. In addition to increasing fat deposits, L-carnitine deficiency causes fatigue. The body relies more on fat for energy, thus saving glycogen, and that, together with the reduction of lactic acid accumulation in the muscles, prolongs and increases the capacity of exercise before the onset of fatigue.