Natural Muscle Food. Promotes GI Health. Gluten Wheat and Dairy Free. Suitable for Vegetarians. Solgar L-Glutamine is a major fuel source for intestinal immune and brain cells. Solgar L-Glutamine also comprises nearly 60% of the body's total amino acid muscle pool. Solgar L-Glutamine regulates nitrogen transport to and from muscle tissue thereby promoting amino acid balance. Solgar L-Glutamine formulation provides Free Form L-Glutamine to promote optimal absorption and assimilation.