L-Arginine will get you a 2 hour window of improved nitric oxide production. Although our research reveals that if you combine L-Arginine & L-Citrulline in a synergistic proportion then you will increase this window of improved nitric oxide production to a 24 to 36 hour window! -- NutriJa L-Arginine and L-Citrulline Complex: L-Arginine and L-Citrulline Complex Combination in a effective ratio of 5:1 5 grams of L-Arginine for instant boost in Nitric Oxide (NO) production.* 1 grams of L-Citrulline for consistent production of Nitric Oxide (NO) through the day. for 300mg of Grape Seed Extract (95% Proanthocyanidin) as an potent antioxidant & works synergistically with Arginine & Citrulline in promoting production of Nitric Oxide.* 10 milligrams of BioPerine to enhance absorption of L-Arginine & L-Citrulline for even better results.*

Promotes Pumps and Vascularity. Promotes Nitric Oxide (NO) production & increases blood flow in the body. L-Arginine and L-Citrulline Complex Combination in a effective ratio.