NOW Sports L-Arginine Powder – Nitric Oxide Precursor | 1 lb

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.

• NOW Sports products are comprehensively tested so you can trust that our products are pure and effective for every level of athletics.
• PROTEIN METABOLISM*/NITRIC OXIDE PRECURSOR*: Arginine supports protein metabolism and is heavily involved in muscle metabolism through its role in the maintenance of a proper nitrogen balance.*
• NITRIC OXIDE PRECURSOR*: Arginine supports protein metabolism and is heavily involved in muscle metabolism through its role in the maintenance of a proper nitrogen balance.*
• GMP 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 product formulation).
• Packaged in the USA by a family owned and operated company since 1968.