L-Arginine is a conditionally essential amino acid and is a precursor for the production of Nitric Oxide. L-Arginine has been shown to promote increased nitric oxide which supports muscle development and recovery. Additionally, high performance athletes need as much blood flowing to their muscles as possible. This makes GAT L-Arginine an excellent bodybuilding supplement. Free form L-Arginine for better absorption Building block of protein Fuels muscle pumps and blood flow 180 servings per bottle