Immune System Support Stops Cortisol Organ and Intestinal Protection Brain Function Keeps from Overtraining Stops Muscle Wasting Glutamine is the most abundant amino acid building block of protein in the bloodstream. It is considered a conditionally essential amino acid because it can be manufactured in the body, but under extreme physical stress the demand for glutamine exceeds the body's ability to synthesize it. Most glutamine in the body is stored in muscles followed by the lungs, where much of the glutamine is manufactured. Glutamine is important for removing excess ammonia a common waste product in the body. In the process of picking up ammonia, glutamine donates it when needed to make other amino acids, as well as sugar, and the antioxidant glutathione. Several types of important immune cells rely on glutamine for energy -- without it, the immune system would be impaired. Glutamine also appears to be necessary for normal brain function and digestion. Adequate amounts of glutamin
