NBL Natural, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets

NBL Natural L-Arginine comes in extra strength 1,000 mg tablets and it 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.