What Is It: Glutamine is the most abundant amino acid in muscle tissue. Thats just a fact. Most people do not know what that fact even means when seeing a glutamine supplement. Does it correlate to muscle growth? Actually Yes. Taking Glutamine post workout allows your body to ramp up protein synthesis so that you can recover quicker. That means muscle growth. Cellucor is offering a high end L-Glutamine at 5g per serving....with 72 scoops per container.