ISS L-GLUTAMINE 400gm 100% Pure L-Glutamine. Muscle protection. Helps nitrogen balance. Increase glycogen storage. Protect your muscles and increase your energy with ISS Research's Complete L-Glutamine Power. ISS Research is committed to helping you achieve your true athletic potential. That's why ISS Research is proud to bring you complete L-Glutamine Powder. Glutamine, the most abundant single amino acid in the muscle tissue, is becoming more prominent as research reveals its effects on: prevention of muscle breakdown (anticatabolic), protein synthesis, increased GH levels, and supporting healthy immune system function. Use Glutamine daily before and after workouts when concentrations are low and recovery is a must! ISS Research's Complete L-Glutamine Powder is 100 % pure grade and is free of contaminants and impurities.