Optimum Glutamine Capsules are formulated for rapid disintegration and maximum absorption. Glutamine is the most abundant amino acid in the body, comprising more than 60% of the free amino acid pool in skeletal muscle and greater than 20% of total circulating amino acids. Optimum Nutrition's Glutamine 1000 Caps are made from the highest quality glutamine available on the market. Each capsule provides 1,000 mg (1g) of pure L-Glutamine.