Arginine is one of the most important amino acids for bodybuilders and athletes as it stimulates the development of lean muscle mass and its components are intermediates in the metabolism of nitric oxides. Benefits: Optimizes the delivery of oxygen and nutrients Improves blood circulation Promotes the growth of muscle mass Increases energy and stamina Stimulates the immune system L-Arginine is a conditionally indispensable amino acid that acts as a precursor of nitric oxide in the body. It is involved in protein synthesis, improves physical endurance, reduces cholesterol levels in the blood and effectively supports the immune system. L-arginine stimulates the production of growth hormone and assists the function of the pituitary and pancreatic glands. It also increases the levels of nitric oxide, dilates blood vessels and improves blood circulation, optimizing the delivery of oxygen and nutrients into the muscle tissue. Arginine stimulates the formation of lean muscle mass, increases endurance, energy and improves athletic performance in the gym and beyond. Furthermore, L-arginine supports the cardiovascular system. Strong antioxidant that neutralizes harmful ammonia from the degradation of amino acids, lowers the effects of free radicals and increases natural body defenses.