NOW Sports Nutrition, L-Arginine Powder, Amino Acids, 1-Pound

NOW L-Arginine is pharmaceutical grade. Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production. It is an important precursor of nitric oxide (NO) and thus plays a role in the dilation of blood vessels. Natural color variation may occur in this product.