DaVinci Laboratories Nitro Benefits Supports healthy levels of Nitric Oxide levels and vascular health. Nitro Benefits™ represents the gold standard in Nitric Oxide (NO) nutritional support. Contains targeted, precision ingredients aimed at blood vessel support. Citrulline and Arginine both play a role in Nitric Oxide production itself, and Proline and Lysine both lend direct support to the integrity of the blood vessel wall. Recommended Use: mix one scoop (10.3 g) per day in 8 oz. juice or water and take on an empty stomach or as directed by your healthcare practitioner.