Now L-Arginine 1000mg Nitric Oxide Precursor Amino Acid 120's

Now L-Arginine provides a potent 1,000 mg per tablet, using pharmaceutical-grade, non-GMO ingredients. This conditionally essential amino acid is integral to urea metabolism, DNA synthesis, and protein production. As a key precursor to nitric oxide (NO), L-Arginine supports blood vessel dilation. Natural color variations may occur. For best results, take one tablet daily.