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4044 reviews
Due to an influx of orders, shipping may be delayed by a couple of days.
What Is L-Glutamine?

L-Glutamine is a nonessential amino acid that plays an important role in metabolic function. It is used by the body to fuel the cells and is the most common amino acid found in the human body. 

L-Glutamine Benefits

Often taken as part of a preworkout regimen, L-Glutamine is most commonly used by athletes and bodybuilders to help boost exercise endurance and to aid in recovery. L-Glutamine may also supports immune function, contribute to healthy metabolic function, and benefit gut and digestive health.

  • Help boost athletic endurance
  • Aid exercise recovery
  • Fortify immune function
  • Support healthy metabolic function
  • Promote digestive and gut health
  • Contribute to overall health and wellness

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.

Supplement Facts
Servings Size 1000 mg
Servings Per Container: -
Amount Per Capsule % Daily Value
L-Glutamine 1000 mg *
*Daily Value not established.
Other Ingredients: None
Free of: Sugar, soy, dairy, yeast, gluten, and additives

Suggested Use: As a dietary supplement, take 500 mg to 1000 mg up to three times daily, preferably before a workout or as directed by physician. Individual needs may vary.

Always consult your health care provider before taking any supplements. Pregnant or lactating women, people with existing medical conditions, or people taking medications should consult their health care provider/s before taking any dietary supplement. If you experience any adverse condition after taking this dietary supplement, discontinue use immediately and consult your health care provider.

Keep out of reach of children.

Customer Reviews
4.8 Based on 4044 Reviews
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abtin b.
United States United States

Great product for sure

Alicia R.
United States United States

i did not receive my order of L Glutamine.


Hello Alicia, We are glad one of our customer service reps was able to help resolve this issue.

Jason R.
United States United States
Best supplements at the best prices

I’ve tried Nutricost’s L-glutamine and feel that bulk supplements is far superior!

Amy R.
United States United States
Not so hungry

It's working on my leaky gut. I feel more full too.

Nicole .
United States United States
Dishonest Company

This product has other things added and isn't pure hence the reason for the smell. 99 percent of the reviews on here and anywhere are fake and written by the company. If you want the facts, go to their L-Glutamine on amazon and you will see this stuff is dangerous to take. I will be sending my L-Glutamine to have it tested this week.


Hello Nicole, Not sure where you are getting your information from. Amino acids always have a smell to them. We take accusations like yours seriously. Our in-house laboratory will perform a multitude of tests that include: ICP-MS heavy metal test (Hg, As, Pb, Cd) FTIR purity test UV-Vis potency test Titration potency test Microbiology contamination test Loss on drying, pH, density and particle size When purchasing from, you can rest assured that you will receive a product that has been fully tested, produced using current good manufacturing practices (cGMP) and is of the highest quality. Certificates of Analysis (COA’s) are available upon request for every product we sell. To request a COA, use this form: Please reach out to us directly for more information about our products.

Tony T.
United States United States

Convenient, great variety of products, just do it.