Now Foods Arginine 500mg, 100 Capsules

• Conditionally Essential Amino Acid
• 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.*

The L-Arginine used in this product is pharmaceutical grade.