L-arginine is a conditionally essential amino acid and is necessary for the body to make proteins. L-Arginine is important for muscle metabolism. It precursors of Nitric Oxide, which is responsible for vasodilation. L–arginine is an amino acid that helps the body build protein. Your body usually makes all the L–arginine it needs. L-arginine is converted in the body into a chemical called nitric oxide. Nitric oxide causes blood vessels to open wider for improved blood flow. L-arginine also stimulates the release of growth hormone, insulin, and other substances in the body. Every serving of Scitron’s L-Arginine contains 1000mg L-arginine