Since 1947 Natural Muscle Food Promotes GI Health Suitable for Vegetarians Kosher Parve Dietary SupplementL-Glutamine is a major fuel source for intestinal, immune, and brain cells. It also comprises nearly 60% of the body"s total amino acid muscle pool. L-Glutamine regulates nitrogen transport to and from muscle tissue, thereby promoting amino acid balance. This formulation provides Free Form L-Glutamine to promote optimal absorption and assimilation.