Control stress levels and boost immunity

  • Enhances muscle building
  • Supports the immune system during periods of stress
  • Reduces intestinal permeability, or “leaky gut”
  • Available in both capsule and powder form in an effective dosage
Gluten Free

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L-Glutamine is an amino acid that is critical for a wide variety of essential functions, including optimal operation of the kidneys, pancreas, gallbladder, liver, the small and large intestines, and the brain. It is the most important of all amino acids in maintaining nitrogen balance within the body, and is involved in protein synthesis, both of which are important for building muscles. L-Glutamine stimulates the production of human growth hormone (hGH), also essential for building muscle, as well as maintaining youthful cellular function.

L-Glutamine’s importance toward good immunity is known to be two-fold: it directly supports the immune system during times of stress through its ability to help produce glutathione, a powerful antioxidant, and indirectly by reducing intestinal permeability or “leaky gut”, inhibiting undigested particles from accessing the bloodstream, which can lead to immune hyperactivity and allergies.

AOR Advantage

L-Glutamine provides an effective dose of this important nutrient to avoid problematic depletions and enhance overall health. AOR’s L-Glutamine is offered in both capsule and powder form for your convenience.




L-Glutamine helps support immune and digestive system health after periods of physical stress. It is stored in the muscle and released during a trauma or illness, such as “leaky gut”. L-Glutamine also helps to assist in muscle cell repair after exercise and this formula is hypoallergenic.


AOR™ guarantees that all ingredients have been declared on the label. Contains no wheat, gluten, corn, nuts, peanuts, sesame seeds, sulphites, mustard, soy, dairy, eggs, fish, shellfish or any animal byproduct.

Adult Dosage

Take eight capsules daily on an empty stomach, or as directed by a qualified health care practitioner.


Consult a health care practitioner prior to use if you are following a low protein diet or if you are pregnant or breastfeeding.

Main Applications
  • Leaky gut
  •  Immune function
  •  Cellular growth & differentiation
  •  Anabolic activity
  •  Alcohol craving
  •  Muscular recovery

The information and product descriptions appearing on this website are for information purposes only, and are not intended to provide or replace medical advice to individuals from a qualified health care professional. Consult with your physician if you have any health concerns, and before initiating any new diet, exercise, supplement, or other lifestyle changes.

Serving Size: One Capsule
750 mg

Non-medicinal Ingredients: none. Capsule: hypromellose.

Supporting the Digestive System

Recent clinical trials have attempted to assess the significance of adding glutamine to enteral amino acid formulations in hospitals, and the results have been impressively widespread. Enteral diets enriched with glutamine were well-tolerated and alleviated many of the immunological aspects of multiple trauma patients as well as mitigating the extent of mucositis in post-chemotherapy patients.

Studies among laboratory rats have revealed that the intestinal tract and other portal-drained viscera account for approximately 40% of all the glutamine utilized by the whole body. The vast majority of this glutamine is consumed by the epithelial cells which convert it into energy for use by the mucosa, the lining of the small intestine. This importance of glutamine to the intestinal tract (and by extension to glucose metabolism) was only discovered in the last twenty years. This holds important implications for hospital patients placed on enteral nutritional support. For patients with intestinal tract difficulties, this is when a percutaneous endoscopic jejunostomy (PEJ) tube is inserted into the small intestine to provide nutritional support.

Growth Hormone and Athletic Health

The importance of growth hormone in overall health and vitality has been well-established for decades. However, obtaining and administering growth hormone from either human or bovine sources (the two most common forms) comes with high costs and inherent risks. This has led to a search for natural growth hormone enhancers, many of whom are amino acids, and one of the most effective and efficient of these is glutamine.

In fact, a recent study demonstrated that even a relatively modest two gram dose of glutamine (orally administered) can illicit a growth hormone level increase of 19% after 30 minutes of ingestion, a rate sustained at 12% after 60 minutes of ingestion. Elevated levels of growth hormone have also been linked to physical activity and exercise, and supplemental glutamine has gained a very firm foothold in the discipline of the latter. The fact of the matter is that according to the latest studies in exercise physiology, resistance training (which coincidentally is the only type of exercise known to markedly raise growth hormone levels) has a similar effect on endogenous glutamine reserves as sepsis. The skeletal muscle amino acid pool, 60% of which is normally comprised of glutamine, begins to jettison its all-important glutamine reserve to feed the gluttonous liver. The homeostasis between the tissues that produce and release glutamine and those that depend on it has once again been disturbed. Some studies have indicated as much as a 50% drop in plasma glutamine levels after a single bout of resistance training exercise, requiring more than 24 hours to recover to pre-exercise levels. In 1996, biochemists at both the departments of Microbiology and Human Movement at the University of Western Australia suggested that glutamine is a ‘conditionally essential’ amino acid and may need to be supplemented in the diet in certain stress situations.