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Supplement Facts & Directions

Supplement Facts

Serving Size: 1500 milligrams
Servings Per Container: Varies
Amount Per Serving % Daily Value*
L-Glutamine 1500 mg

* Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value Not Established
‡ These supplement facts may vary from the product you receive.    Please call for exact numbers.

Other Ingredients: None


Free of:  Soy, Dairy, Yeast, Gluten, & Additives.

Directions:  As a dietary supplement, take 1500 mg up to three times daily, preferably immediately after a workout, or as directed by a physician. Accurate gram weight scale recommended.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition consult your physician before use. Persons with liver or kidney disease, or Reye's syndrome should not use. DO NOT HEAT. Keep out of reach of children.

Product Details

What is Glutamine?

L-Glutamine, or simply glutamine, is one of 20 amino acids found in dietary proteins. It is the most abundant naturally occurring amino acid found in the body. Meat and eggs contain high levels of glutamine. However, whey protein and casein are the richest food sources of glutamine. Glutamine is crucial for gut and immune health, as those systems prefer glutamine over glucose for energy. Glutamine may also support exercise performance by reducing muscle soreness.

Although the body can synthesize glutamine, it can be a conditionally essential amino acid for some individuals. For instance, vegans and vegetarians may become glutamine deficient as they don’t consume enough glutamine through dietary sources. Prolonged or intense endurance training can also increase the body’s glutamine needs beyond its synthesizing capabilities. Individuals may need supplemental glutamine while recovering from injuries, illnesses, and surgeries. If the body’s glutamine demands outstrip its ability to synthesize the amino acid, the body may break down muscle tissues to obtain the glutamine it needs.

Potential Glutamine Benefits

Glutamine and the Immune System

Glutamine acts as a fuel source for leukocytes, a type of white blood cell that defends the body against diseases. Leukocytes prefer glutamine over glucose for energy, as glutamine provides faster energy. Leukocytes can’t synthesize glutamine and must obtain it from other tissues or dietary sources. Insufficient glutamine can compromise immune functioning.

Glutamine for Muscle Soreness and Exercise Performance

Athletes may benefit from adding glutamine supplements to their pre workout drink. One study found that glutamine supplements helped athletes recover faster following intense exercise. The same study reported that glutamine reduced muscle soreness after exercise. Another clinical trial noted that glutamine reduced inflammation caused by intense aerobic exercise. A faster recovery, reduced inflammation, and less soreness after exercise may allow athletes to train harder with less downtime between workouts. Glutamine can also help attenuate exercise-induced damage to immune cells.

L-Glutamine for Gut Health

Glutamine may benefit gut health in several ways. Research shows that glutamine stimulates protein synthesis in the mucosa, thereby improving the protein balance in the gut. It also plays a role in sustaining the intestinal barrier. Glutamine enhances transepithelial resistance, which is essential for maintaining gut integrity while reducing gut permeability. Glutamine also protects the gut against external factors that typically worsen permeability, such as alcohol metabolites.

Potential Glutamine Side Effects

Glutamine supplements do not typically cause side effects, as it is a naturally occurring amino acid in the body. Some individuals may experience mild side effects, such as bloating, heartburn, stomach pain, dizziness, or nausea. Individuals with liver function abnormalities should consult a physician before taking glutamine supplements.


Tested by Accredited 3rd Party Labs

PureBulk's supplements are tested by accredited third party labs in the USA to ensure their identity, purity and potency. To receive a copy of these test results or any other PureBulk supplement please fill out the COA request form found here.

*NOTE: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

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