GL3 L-Glutamine
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GL3 L-Glutamine , 1200 Grams Unflavored

Glutamine Powder to Support Muscle Growth*
Unflavored Powder to Increase Muscle Hardness, Strength, and Enhance Recovery*
9.7  out of 10  (59 Reviews)
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Product Overview

GL3, 2-Aminoglutaramic Acid, is a pure L-Glutamine supplement in crystalline powder form. Glutamine has become more prominent as new studies suggest its unique contribution to support protein synthesis (muscle growth) and anti-proteolytic (prevents muscle tissue breakdown) functions.*

  • Support Muscle Hardness*
  • Support Muscle Cell Hydration*
  • Support Protein Synthesis*
  • Support Muscle Strength*
  • Enhances Recovery*

Glutamine provides a critical link in muscle metabolism not shared by any other single amino acid, and GL3 makes utilizing glutamine a realistic and effective endeavor.* GL3 is pure, L-Glutamine in an odorless and tasteless powder.

Glutamine is the most abundant single amino acid in the blood and in the intracellular free amino acid pool (most abundant amino acid in muscle tissue). It comprises 61% of the amino acid pool in skeletal muscle. Glutamine's unique structure, containing two nitrogen side chains, consists of 19% nitrogen - making it the primary transporter of nitrogen into the muscle cell. In fact, glutamine alone is responsible for 35% of the nitrogen that gets into the muscle cell. Glutamine literally drives muscle building nitrogen into the muscle cell where it is synthesized for growth.*

Glutamine concentrations fall markedly after training and remain low until complete recovery. What this means is, the very rigors of weight training "leak" nitrogen carrying glutamine from muscle tissue. This fall in glutamine is catabolic to muscle tissue - "The Training Paradox". Supplementing with glutamine spares free glutamine in muscle tissue, counteracts the fall in muscle protein synthesis, and improves nitrogen balance.* Glutamine helps to overcome "The Training Paradox".*

You train with weights to build muscle. The more intensely you train, and the heavier the overload you subject your muscles to, the greater the growth response will be.

Glutamine is a key factor in muscle growth, and controlling the skeletal muscle/whole body glutamine gradient is critical in maintaining and building muscle tissue.* The higher the muscle glutamine levels you can maintain, the less chance you have of falling into catabolism and the faster muscle will grow.* But now there is more...

"A New Study In The 'American Journal Of Clinical Nutrition' Is Set To Shock The Sports Nutrition World!"

Now for the exciting news -
In a recent release of the prestigious American Journal of Clinical Nutrition, the results of a study on glutamine revealed that a single 2 gram oral dose of glutamine elevated circulating growth hormone levels significantly. GL3 is designed to help support healthy growth hormone levels!*

Supplementing with GL3 L-Glutamine is an effective way of assisting new muscle growth!

How to use GL3 L-Glutamine:
Take 1 serving 2 times daily. How and when you train will determine when you schedule your GL3 dosage.

Train in the morning.

  • Schedule your first serving about 30 minutes to 1 hour before your morning workout.
  • Take 1 serving 30 minutes after you train.
  • Take 1/2 serving before bed.

Train twice daily.

  • Take 1/2 serving (5 grams) 30 minutes before your morning workout.
  • Take 1/2 serving (5 grams) 30 minutes after your morning workout.
  • Take 1/2 serving (5 grams) 30 minutes before your evening workout.
  • Take 1/2 serving (5 grams) 30 minutes after your evening workout.
  • Take 1/2 serving before bed.

Questions And Answers

What's the best way to take GL3 Micronized L-Glutamine?
The best way to take GL3 is to mix 5 to 10 grams in about 6 ounces of water or juice. Juice might be preferred as it may enhance glutamine uptake into the muscle cell.

You should drink immediately and not let GL3 stay mixed in a liquid for more than a couple of hours.

Ratings & Reviews

GL3 L-Glutamine
Overall Rating
59 Ratings
Verified Buyer Rating
21 Ratings
Average Flavor Rating
1 Flavors
Top Rated Flavor
Sem sabor
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Jan 24, 2016

very good

Nov 30, 2015
Verified Buyer


Sep 15, 2015
Verified Buyer

No aftertaste or gritty leftovers ... dissolves easily and all the way

Sep 07, 2015

very effective and the taste is very good for an unflavored glutamine powder

Aug 16, 2015
Verified Buyer

This stuff absolutely works! I'm a big fan of AST products, I used this product 15 years ago, so when I started lifting again recently I had to buy it as part of my supplement stack. I'm glad to see it is still a high quality product, which made this purchase super solid! Recovery time and soreness are cut in half and in some cases almost non existent! I mix it with less then 8 ounces of apple juice before my workout, goes down smooth! and then add it to my protein shake post workout!

Feb 09, 2015
Verified Buyer
No written review.
Jan 18, 2015
Verified Buyer


Aug 22, 2014
Verified Buyer

Def helps with the soreness and recovery

Apr 16, 2014
Verified Buyer
No written review.
Mar 14, 2014
Verified Buyer

Very good product!!!

Mar 06, 2014

I bought this product based on the reviews. Unfortunately this product did not work to well, it sits at the bottom of my cup. Mix it and wait 5 seconds it all fell to the bottom. I had to swallow it down very quick and then add water to get out the remainder. I have used other brands and have not scene this happen.

Feb 08, 2014
Verified Buyer

Easily mixes with my recovery drink. Great muscle recovery. Definitely something I can't do without..

Nov 12, 2013
Verified Buyer

Very good product, very effective and very useful for enhancing Whey Protien absorbtion and utillization.

Oct 03, 2013
Verified Buyer

This product delivers!!! Before I was taking this Glutamine post-workout, my recovery was slower and I felt more. Now I just added a scoop of this to my protein shake and recovery has picked up. I will absolutely continue using this!!!

Aug 19, 2013

This product is great for recovery purposes

What's in AST GL3 L-Glutamine

1200 Grams Unflavored
Serving Size: 10 grams (Approximately 2 Teaspoons)
Servings Per Container:120
Amount Per Serving %DV **
L-Glutamine (not less than 98.5%) 10 g *
* Daily Value not established
** Percent Daily Values (%DV) are based on a 2,000 calorie diet

Directions For GL3 L-Glutamine: As a dietary supplement, mix two teaspoons (10 grams) in 6 to 8 ounces of water or juice. Drink 1 serving 30 minutes before training and 1 serving 30 minutes after training.

* 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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