Improves Muscle Recovery Immune System Booster Dietary Supplement 100% Pharmaceutical GradeGlutaLean Plus Glutamine Drink Mix contains only pure Ajinomoto brand pharmaceutical grade L-Glutamine PLUS glutamine peptides. Glutamine is an amino acid that accounts for approximately 60% of all free amino acids in the body. Muscle tissue contains especially high concentrations of glutamine.Supplemental glutamine can help prevent muscle tissue breakdown, increase protein synthesis, increase glycogen storage (energy stores) in muscle, and supports healthy immune function. Now, get the extra glutamine you need in one delicious drink! Quality Guarantee SealEvery Labrada product is tested by an independent lab for purity and potency. Only then does this earn this seal. With Labrada products you get what you pay for.Lee Labrada"s Quality Guarantee: "If it"s on the label, it"s in the bottle!" This product is independent lab assayed for purity.