NOW Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 250 Veg Capsules

NOW® L-Arginine comes in 500 mg capsules and is non-GMO. 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.* The L-Arginine used in this product is pharmaceutical grade. Natural color variation may occur in this product.CONDITIONALLY ESSENTIAL AMINO ACID: Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production.*NITRIC OXIDE PRECURSOR*: Arginine plays an important role in the dilation of blood vessels.*CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher (contains gelatin), Soy FreeGMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and pro