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Natural Factors

Micronized L-Glutamine Powder, 8 oz (226 g)

4.7 · 2746 reviews
1,911 ₽

Dietary Supplement 5000 mg Free Form Amino Acid Healthy Muscle Tissue & Immune System Suitable For Vegetarians/Vegans L-Glutamine is an amino acid that can be found throughout the body, primarily in the brain, gastrointestinal tract, muscles, and liver cells. Supplementing with L-Glutamine can help restore plasma L-Glutamine levels depleted after periods of physical stress and can accelerate recovery time. Additional benefits include immunity support and energy, as well as healthy digestive and brain function. Micronization technology greatly minimizes that particle size, thus allowing your body to more easily break down and absorb the glutamine. Natural Factors amino acids are the highest quality pharmaceutical grade products available. Isura™: Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

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Dietary Supplement 5000 mg Free Form Amino Acid Healthy Muscle Tissue & Immune System Suitable For Vegetarians/Vegans L-Glutamine is an amino acid that can be found throughout the body, primarily in the brain, gastrointestinal tract, muscles, and liver cells. Supplementing with L-Glutamine can help restore plasma L-Glutamine levels depleted after periods of physical stress and can accelerate recovery time. Additional benefits include immunity support and energy, as well as healthy digestive and brain function. Micronization technology greatly minimizes that particle size, thus allowing your body to more easily break down and absorb the glutamine. Natural Factors amino acids are the highest quality pharmaceutical grade products available. Isura™: Non-GMO: Documentation ✔ Mass Spec: Lab Tested ✔

Customer reviews

5.0
verified purchase
great

Good product, high quality ingredient and composition, does what is supposed to.  Package and dosage size is ok, and price is reasonable. Use it for some time now. no taste or smell overall recommended and you can benefit from it

2/26/2025
5.0
verified purchase
Great

This micronized L-glutamine powder is very fine and mixes easily in water without clumping. It has almost no taste, which makes it easy to take daily. I’ve been using it after workouts and noticed better recovery and less soreness. It’s also gentle on my stomach. The quality feels clean and pure. Good value for the price and I would repurchase.

3/25/2026
5.0
verified purchase
gut health. empty stomach

Micronized L-Glutamine is a free-form amino acid that supports muscle recovery and tissue repair, helps maintain gut lining integrity and digestive health, contributes to immune system function during periods of stress or intense training, assists in nitrogen balance for muscle preservation, and may reduce exercise-induced soreness while supporting overall cellular recovery

2/7/2026
5.0
verified purchase

Natural Factors L-Glutamine is a high-quality supplement that delivers pure, pharmaceutical-grade L-glutamine. The powder is clean, with no unnecessary fillers, additives, or artificial ingredients, making it easy to trust for consistent support. It mixes smoothly in water or juice without clumping, and the neutral taste ensures it can be taken on its own or added to shakes. The serving size is generous, and the container provides a good amount for regular use, offering excellent value for those looking to support muscle recovery, gut health, and overall wellness.

1/1/2026
5.0
verified purchase
Excellent

⭐⭐⭐⭐⭐ Great quality and exactly as described. The ingredients are clean and well selected, which makes the product feel safe and effective. The taste is good and easy to take, and the size is convenient for daily use. The package arrived well sealed and in perfect condition. I noticed clear benefits after regular use, with no side effects at all. iHerb always delivers reliable products, and this one did not disappoint. Definitely worth the price and I highly recommend it.

12/30/2025
5.0
verified purchase
Great value powder that mixes easily

This L-glutamine powder is a very fine powder, which is awesome if you want to dissolve it in water. This tub is a big size that provides you the benefits of L-glutamine for great value. Packaging is sturdy. The protective sealing came of with ease, which is not often the case with other products. I use this supplement primarily for gut health and take it on an empty stomach first thing in the morning.

12/1/2025
5.0
verified purchase
5-Star Review

This L-Glutamine powder is fantastic! The 16 oz (454 g) jar is a generous size that lasts for weeks, making it a great value. The micronized texture makes it extremely easy to mix into water, smoothies, or juices — no clumps or gritty texture. I love that it’s pure and high-quality, supporting gut health and recovery after workouts. I’ve noticed improved digestion, reduced gut discomfort, and better overall energy. This supplement is a must-have for anyone looking to support their digestive system, muscle recovery, and overall wellness!

11/27/2025
5.0
verified purchase

I recently tried a new supplement that has truly impressed me. The quality of the ingredients is top-notch, and I could really taste the difference compared to other products I've used. The size of the serving is perfect for my workout routine, especially with the addition of creatine, which I find enhances my endurance significantly. The packaging is also convenient and easy to use, making it perfect for my fitness diet. Overall, I’ve noticed great benefits since incorporating this supplement into my regimen, especially during intense workouts. I highly recommend it to anyone looking to boost their performance!

11/17/2025
5.0
verified purchase
Immune Support & Gut Health

I go to Natural Factors L glutamine for help in restoring gut and digestive issues. It supports intestinal lining and helps with leaky gut or IBS. The micronized free form amino acid is quickly absorbed and faster delivery to tissues thus ready for immediate use by the body. Ingredients have been 3rd party tested and clean source. Quality is good - no fillers or additives.

11/11/2025
5.0
verified purchase
Natural Factors Micronized L-Glutamine

I’m really happy with Natural Factors Micronized L-Glutamine Powder! The quality is excellent — it dissolves easily, has no taste, and is perfect to mix with water or smoothies. I’ve noticed better digestion, faster muscle recovery, and overall more energy since I started using it. I also appreciate that it’s micronized, so it absorbs quickly and doesn’t clump. Great value for the price and definitely a supplement I’ll keep in my routine!

10/14/2025