L-Arginine Pure Powder - 1 LB (NOW Sports)

Pure Powder
Protein Metabolism*
Nitric Oxide Precursor*
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.
This product is sold by weight not volume.
NOW® L-Arginine is pharmaceutical grade.