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4053 reviews
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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 4053 Reviews
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Evan B.
United States United States
I recommend this product
High Quality Glutamine at a Great Price

Simple enough - mixes well, throw it into pre/post workout beverages, recovering great, no taste profile, and budget friendly. Highly recommend.

Jorge B.
United States United States

Recovery is going great after demanding workouts every day.

United States United States
unpleasant taste plus caused nausea and stomach problems, going back to the expensive brand

I hoped to find a less expensive alternative to the L-Glutamine powder I have been using the past year. I saw on labdoor that this rated very high in purity testing and was pleased to find it was much less expensive. First thing I noticed is it had an unpleasant taste. The brand I had been using had little-to-no detectible taste, definitely not unpleasant. The next day I started having nausea and digestive issues. Maybe coincidence, I take a prescription that causes me problems. I stopped taking the Bulk Supplements L-Glutamine and cut back on the Rx. Waited a week and tried the L-Glutamine again. Twice more I tried the Bulk Supplements L-Glutamine and had nausea and digestive issues both times. During this time my daughter ran out of her L-Glutamine (used the same expensive brand I had been using) and asked for a few days supply until hers arrived. She said the same thing - the Bulk Supplements brand had an unpleasant taste and although it did not cause her nausea, she did have the some inconvenient digestive issues. Unfortunately - neither of us are able to tolerate this, so I will have to discard it and will go back to the other. brand, which is unfortunately quite a bit more expensive but works without the bad taste or any side effects.


Hello Elizabeth, We take issues like this very seriously. Please contact our customer service department with the lot number from your bag and we can have our quality control team investigate.

United States United States

Great price for a great product.

Clois B.
United States United States
Well at least I know it is clean

Have only taken a couple of doses, so I really can't tell you if it is working. It taste good though !!!

Mitchell T.
United Kingdom United Kingdom
Fast Shipping ! Great Product!

Awesome product , thanks guys