It increases the level of energy production in the body.- It is an amino acid that occurs naturally in the human body & works to activate the body in the production of energy. – Valupak L-Carnitine works to increase the production of energy in the body by increasing fat burning it in the muscles. It is recommended to use it in cases of physical weakness & stress and as a stimulant for athletes. – Also, L-Carnitine use in the treatment of poor sperm motility in men (sperm motility) & assisting in procreation.