Dietary Supplement. Anabolic Amino Acid. Strength. The Science Behind the Size: Product - 4500 mg of pure L-Glutamine, the most abundant free amino acid in skeletal muscle, essential to serious athletes. Result - Increase growth hormone release and enhance muscle metabolism. Science - Research shows that glutamine produces an anti-catabolic (muscle sparing) effect. (These statements have not been evaluated by the Food and Drug Administration. The product is not intended to diagnose, treat, cure, or prevent any disease.)