Glutamine

Glutamine is the most abundant amino acid in the body and plays a critical role in nitrogen transport and immune system support. During periods of intense stress or exercise, glutamine levels can become depleted, making supplementation potentially beneficial. It supports gut integrity by serving as a primary fuel source for intestinal cells and may help reduce gut permeability. Additionally, glutamine is involved in protein synthesis and may help reduce muscle soreness and improve recovery times, although evidence is mixed. While glutamine is naturally produced by the body and found in many protein-rich foods, supplementation is often used by athletes to support recovery and immune health during heavy training phases.

Glutamine serves as a key fuel source for immune cells and intestinal lining cells, helping maintain their function and integrity. During intense exercise, glutamine levels may drop, impairing immune response and gut health. Supplementation helps replenish glutamine stores, supporting recovery and reducing susceptibility to infections.