- Pure Powder
- Protein Metabolism*
- Nitric Oxide Precursor*
Now Sports L-Arginine Powder 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.
Mix 2 level teaspoons Now Sports L-Arginine Powder daily as needed in at least 8 oz. of juice or water, preferably on an empty stomach.
Store in a cool, dry, dark place after opening.