Highlights * Safely boosts glutamine in the brain, muscles, and gut, leading to better energy production in the body. * It enhances digestion, increases stamina, and sharpens mental clarity. * Patented recycled glutamine formula prevents the harmful build-up of glutamate, which can damage nerves. Purity & Potency Guaranteed. We are among a select few manufacturers that post our 3rd party lab testing. View Peak Glutamine PAK COA Overview Peak Glutamine PAK offers great nutritional support for muscle endurance and mental sharpness. It has a special mix of L-glutamine and pyridoxal alpha-ketoglutarate (PAK). Glutamine is a vital energy source for your intestines, muscles, brain, and liver.