NOW Foods L-Arginine, 500 mg, 250 Veg Capsules

• Conditionally Essential Amino Acid
• Nitric Oxide Precursor
• Non-GMO
• A Dietary Supplement
• Vegetarian / Vegan
• Kosher
• Family Owned Since 1968
• GMP Quality Assured

Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as 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.