Jarrow Formulas L-Glutamine Powder is a dietary supplement featuring L-Glutamine, the most abundant amino acid in the human body. It plays a role in muscle tissue synthesis and protection, glycogen production, and provides immune support during stress. L-Glutamine is also a primary fuel source for intestinal cells, supporting the integrity of the intestinal lining. This product is vegan, non-GMO, and gluten-free, manufactured by microbial fermentation.