NOW Foods, Sports, L-Arginine Powder, 1 lb (454 g)

Amino Acids Pure Powder Protein Metabolism Nitric Oxide Precursor Informed Sport - We Test, You Trust A Dietary Supplement Steroid Free Vegan Kosher Non-GMO Halal GMP Quality Assured 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.