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Thorne Research, L-Glutamine Powder, 18.1 oz (513 g)

By Thorne Research

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  • Product Code: THR-51902
  • UPC Code: 693749519027
  • Package Quantity: 18.1 oz (513 g)
  • Dimensions: 5 x 5 x 5 in, 1.05 lbs (0.48 kg)
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Product Overview

  • Dietary Supplement

Thorne Research provides L-glutamine in a convenient, cost-effective powder for ease of supplementation in large amounts.

L-glutamine is the most prevalent amino acid in the bloodstream. It is found in high concentration in skeletal muscle and lung, liver, brain, and gastrointestinal tissues. Skeletal muscle contains the greatest intracellular concentration of glutamine, comprising up to 60 percent of total body glutamine stores, and muscle is the primary storage depot and exporter of glutamine to other tissues. However, the gastrointestinal tract is the greatest user of glutamine in the body because glutamine provides the primary fuel for the nutrient-absorbing cells that line the walls of the small intestine.

Various stressors – such as trauma, infection, malnutrition, chemotherapy, and others – can impact the normal function of the enterocytes of the small intestine by adversely affecting how substances are absorbed. For example, when gut permeability is impaired it can allow large protein molecules to diffuse across the intestine – that would otherwise not – and enter the bloodstream. The body can identify these large protein molecules as foreign and mount an immune reaction against them, which can result in the development of food allergies. In numerous animal studies, in which hyper permeability of the intestine is experimentally induced, the addition of glutamine improved permeability function as well as the gut's immune function.

Under certain circumstances the body's tissues need more glutamine than the amount supplied by diet and internal production. In times of metabolic stress, glutamine is released from the muscles into the bloodstream, where it is transported to the tissues in need. But glutamine concentration in the skeletal muscles can be affected by various insults, including injury, infection, prolonged stress, malnutrition, and the use of glucocorticoids. Research demonstrates glutamine supplementation may be of benefit to the needed structures and functions.

In addition, as noted above, evidence suggests supplemental glutamine may provide benefit for gastrointestinal health, as well as support for wound healing, immune health, and nutrient support for individuals undergoing chemotherapy and radiation.

Suggested Use

Take 1 scoop in 8 ounces of water one to three times daily or as recommended by your health-care practitioner.


Tamper Evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

Store tightly sealed in a cool, dry place.

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Supplement Facts
Serving Size: One Scoop
Servings per container: 90
Each Level Scoop (5.7 g) Contains: Amount Per Serving: % DV
L-Glutamine 5 g *
*Daily Value (DV) not established.

iHerb Customer Reviews

5 Stars
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1 Stars

Good product

Posted by 5742056013251948285 on Dec 18, 2012

Daily I used Thorne Research, L-Glutamine to help the family of the Leaky Gut Syndnme repair her intestinal ,and want to reduce the onset of atopic dermatitis.

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2 people found the following review helpful

Leaky gut

Posted by 4625915390168235560 on Dec 04, 2013

I suffer from Leaky gut and this product made me feel better in just afew days. I use Perma clear from thorne as well.

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1 person found the following review helpful

Pray for glutamine

Posted by 5441601568455206788 on Dec 15, 2013

Parchased for Leaky Gut & Hypo glycemia. I feel better after start using 20days !

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1 person found the following review helpful

Great for helping to heal the gut

Posted by 5454768098461184526 on May 19, 2014

This product is wonderful to use as part of a digestive healing protocol, especially for healing leaky gut. It is a clean formula that is easy to take in water on an empty stomach, or mixed with juice or smoothies.

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1 person found the following review helpful


Posted by 4613142442863848488 on May 12, 2012

Have tried Bio-care L-Glutamine and got on well with it, I have multiple allergies. However, Thorne Research is also allergen free, but for me, I can't quite decide if its good for me or not. I think it may well be a very good product, but I don't think I will be buying it again.

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1 person found the following review helpful

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