Customize Your Shopping Experience!

Please select the destination country, language, and currency you prefer.

Available Shipping Methods
Available Payment Methods
Added to Cart
Combo Discount:
View/Edit Cart Checkout
Cart Total:
Customers Also Bought:

Thorne Research, L-Glutamine, 90 Veggie Caps

By Thorne Research

Our Price:
You Save:
$0.01 (0%)
Earn 10% Loyalty Credit ?

This product is already in your Wish List.

View Wish List

This product is now in your Wish List.

In Stock
  • Product Code: THR-51802
  • UPC Code: 693749518020
  • Package Quantity: 90 Veggie Caps
  • Dimensions: 3.8 x 2 x 2 in, 0.2 lbs (0.09 kg)
Bundle Offer
Save $6.00 when you purchase these items today for only $21.60


Combo Discount:



- $6.00


Product Overview

  • Dietary Supplement
  • Hypoallergenic

L-Glutamine primary fuel for the cells lining the small intestine

  • promotes gastrointestinal and immune health
  • supports a healthy nervous system
  • a nutrient that is essential for wound healing
  • made without flowing agents that can inhibit its bioavailability

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 of wound healing, immune health, and nutrient support of individuals undergoing chemotherapy and radiation.

Suggested Use

Take 1 capsule three times daily or as recommended by your health-care practitioner.

Other Ingredients

Hypromellose (derived from cellulose) capsule, silicon dioxide.


Tamper Evident: Use only if bottle is sealed.

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

Store tightly sealed in cool, dry place.

Visit Manufacturer's Website
Supplement Facts
Serving Size: One Capsule
Each Capsule Contains: Amount Per Serving % DV
L-Glutamine 500 mg *
*Daily Value not established.

iHerb Customer Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars

incredible healer!

Posted by Reviewer2322255 on Feb 22, 2013

i have crohn's disease and celiac disease, and my naturopathic doctor prescribed these to help heal my intestines - wow what an amazing difference! i am healing, suffering less, and on the road to recovery! (and without the side effects that prednisone or azacol come with)

Was this review helpful to you?

6 people found the following review helpful

Very helpful with digestive issues

Posted by Reviewer3100668 on Jan 17, 2012

I find it very healing to the gut, and for my dog as well who has recently suffered from internal bleeding due to a genetically predisposed condition. Thorne Research makes the best quality, magnesium stearate-free products I have found!

Was this review helpful to you?

5 people found the following review helpful

Impeccable quality

Posted by Reviewer2019871 on Oct 19, 2009

Thorne products are renowned for purity and quality. In fact, they are recommended by MDs, NDs and many other leading practitioners. I have found this product be excellent for maintaining GABA in the brain (it combines with taurine to do this), and for maintaining the intestinal musoca. My chiropracter recommended Thorne L-Glutamine, and I've been taking it daily ever since.

Was this review helpful to you?

4 people found the following review helpful

a good product

Posted by Reviewer2762075 on Apr 30, 2012

take these for my sensitive stomach (IBS), works for me!!

Was this review helpful to you?

3 people found the following review helpful

Good supplement

Posted by Krisinsight on Jan 23, 2010

This is a good supplement with minimal fillers.

Was this review helpful to you?

2 people found the following review helpful

See All Reviews