L-norvaline is an essential amino acid derived from valine that is commonly taken by bodybuilders and athletes to boost performance and assist in muscle recovery. L-norvaline has a wide range of health benefits, supplying energy, boosting athletic endurance, and assisting in muscle growth and recovery.* It supports the cardiovascular system and circulation, fortifies the joints, and even benefits men’s sexual health and libido.** These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.