IronMaxx Arginine Simplex 1600 - 300 CapsulesIronMaxx Arginine Simplex 1600, 300 capsules Arginine is a proteinogenic amino acid that must be supplied via food to cover body needs. The natural protein building block contains the most nitrogen of all amino acids, from which the body can produce nitric oxide. The vasodilating effect of nitric oxide promotes blood circulation to the cardiovascular system and muscles. This ensures better nutrient and oxygen transport, improves fat burning and