Strengthen immune functions Improves intestinal health Promotes muscle growth   Glutamine is a critical amino acid and the most abundant in the body. It is important for gut health and can boost immune function, improve absorption and promote muscle growth, help prevent or heal leaky gut. Glutamine is essential to many processes in your body, especially when under high stress. Fermented L-Glutamine provides an easier form of glutamine for the body to absorb. It has no taste and mixes easily into water.