Life Extension L-Glutamine 500 MG 100 Capsules
Glutamine is the most abundant free amino acid circulating in the blood as well as stored in the skeletal muscles. Glutamine is a diverse amino acid that is utilized in numerous vital functions. It is necessary for rapidly dividing cells, including those of the gut and immune system. It is also used as an energy source in mitochondria,12 and is a precursor of the brain neurotransmitter glutamate. Glutamine is also needed for optimal nucleotide biosynthesis and protein synthesis. The function of glutamine in stimulating glycogen synthase, the enzyme which controls the synthesis and storage of glycogen fuel in muscles and liver, may provide a mechanism by which glutamine supplements promote enhanced fuel stores. Glutamine is an important fuel for some immune cells, such as lymphocytes and macrophages, that may have specific immunostimulatory effects. People that do heavy exercising can lower their glutamine levels causing stress to their body and immune systems. For that reason, supplementing with glutamine can be important to a serious athlete, someone challenged with muscle loss, or who wants to help maintain optimal immune function under heavy stress. Glutamine supplements cause a rapid rise in cellular glutamine levels and glutamine stores in muscle.
Glutamine is the most abundant free amino acid circulating in the blood as well as stored in the skeletal muscles. Glutamine is a diverse amino acid that is utilized in numerous vital functions. It is necessary for rapidly dividing cells, including those of the gut and immune system. It is also used as an energy source in mitochondria,12 and is a precursor of the brain neurotransmitter glutamate. Glutamine is also needed for optimal nucleotide biosynthesis and protein synthesis. The function of glutamine in stimulating glycogen synthase, the enzyme which controls the synthesis and storage of glycogen fuel in muscles and liver, may provide a mechanism by which glutamine supplements promote enhanced fuel stores. Glutamine is an important fuel for some immune cells, such as lymphocytes and macrophages, that may have specific immunostimulatory effects. People that do heavy exercising can lower their glutamine levels causing stress to their body and immune systems. For that reason, supplementing with glutamine can be important to a serious athlete, someone challenged with muscle loss, or who wants to help maintain optimal immune function under heavy stress. Glutamine supplements cause a rapid rise in cellular glutamine levels and glutamine stores in muscle.
Glutamine is the most abundant free amino acid circulating in the blood as well as stored in the skeletal muscles. Glutamine is a diverse amino acid that is utilized in numerous vital functions. It is necessary for rapidly dividing cells, including those of the gut and immune system. It is also used as an energy source in mitochondria,12 and is a precursor of the brain neurotransmitter glutamate. Glutamine is also needed for optimal nucleotide biosynthesis and protein synthesis. The function of glutamine in stimulating glycogen synthase, the enzyme which controls the synthesis and storage of glycogen fuel in muscles and liver, may provide a mechanism by which glutamine supplements promote enhanced fuel stores. Glutamine is an important fuel for some immune cells, such as lymphocytes and macrophages, that may have specific immunostimulatory effects. People that do heavy exercising can lower their glutamine levels causing stress to their body and immune systems. For that reason, supplementing with glutamine can be important to a serious athlete, someone challenged with muscle loss, or who wants to help maintain optimal immune function under heavy stress. Glutamine supplements cause a rapid rise in cellular glutamine levels and glutamine stores in muscle.
Glutamine is the most abundant free amino acid circulating in the blood as well as stored in the skeletal muscles. Glutamine is a diverse amino acid that is utilized in numerous vital functions. It is necessary for rapidly dividing cells, including those of the gut and immune system. It is also used as an energy source in mitochondria,12 and is a precursor of the brain neurotransmitter glutamate. Glutamine is also needed for optimal nucleotide biosynthesis and protein synthesis. The function of glutamine in stimulating glycogen synthase, the enzyme which controls the synthesis and storage of glycogen fuel in muscles and liver, may provide a mechanism by which glutamine supplements promote enhanced fuel stores. Glutamine is an important fuel for some immune cells, such as lymphocytes and macrophages, that may have specific immunostimulatory effects. People that do heavy exercising can lower their glutamine levels causing stress to their body and immune systems. For that reason, supplementing with glutamine can be important to a serious athlete, someone challenged with muscle loss, or who wants to help maintain optimal immune function under heavy stress. Glutamine supplements cause a rapid rise in cellular glutamine levels and glutamine stores in muscle.
in 11 offers
The lowest price for Life Extension L-Glutamine 500 MG 100 Capsules right now is $16.25 at HerbsDaily.com, compared across 9 retailers.
The all-time low was $11.25 on 7 Dec 2025 — today's price is 44% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 1 July 2026.
Last updated at 01/07/2026 06:02:33
Life Extension L-Glutamine 500Mg Capsules
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Life Extension, L-Glutamine, 500 Mg, 100 Veg Capsules
Delivery $15.88
Life Extension, L-Glutamine, 500 mg, 100 Vegetarian Capsules
Delivery $40
L-Glutamine 500 mg - 100 caps
Delivery $35.75
Life Extension L-Glutamine, 500 mg L-glutamine, Amino Acid, Supports Muscle Health and Immune Health, Gluten-Free, Non-GMO, 100 Vegetarian Capsules
Free delivery between 10–15 July
Life Extension L-Glutamine, 500 Mg L-glutamine, Amino Acid, Supports Muscle Health And Immune Health, Gluten-Free, Non-GMO, 100 Vegetarian Capsules
Delivery $28.88
Life Extension L-Glutamine 500 mg 100 Vegetarian Capsules
Delivery between 2–14 July $28.88
Life Extension Creatine Capsules 120 Count & L-Glutamine 500mg 100 Capsules Bundle for Muscle Health
Delivery between 2–14 July $28.88
Life Extension L-Glutamine 500mg High Dose 100 Vegan Capsules Lab-Tested Gluten Free Vegetarian Soy Free GMO Free
Delivery between 2–14 July $28.88
Lglutamine 100 capsules LIFE EXTENSION
Delivery $69.86
originally posted on iherb.com
Life Extension L-Glutamine 500 mg has proven to be a valuable addition to my supplement routine. The pure composition of L-Glutamine in convenient 500 mg capsules is effective for supporting muscle recovery and overall well-being. This supplement by Life Extension has become a reliable choice in maintaining my active lifestyle. Highly recommend for those looking for a straightforward and quality L-Glutamine supplement.
originally posted on iherb.com
Life Extension L-Glutamine 500 mg capsules are excellent quality. I've been using them for workout recovery and digestive health, and I've seen noticeable improvements. The capsules are easy to take, and I appreciate that they’re vegetarian. The purity and effectiveness of the product really stand out, making it a trustworthy option for anyone looking to support gut health or muscle recovery. Highly recommend!
originally posted on iherb.com
This L-glutamine supplement delivers impressive quality, with pure L-glutamine as its main ingredient. The taste is neutral, which makes it easy to mix into any shake or drink. The size of the package is generous, offering great value for the price. I’ve experienced noticeable benefits in recovery and muscle support since adding it to my routine. Overall, it’s a solid product for anyone looking to enhance their post-workout recovery, and I’m satisfied with its effectiveness.
| Best by | 09/2025 |
| Dimensions | 5 x 5 x 10.9 cm , 0.1 kg |
| Serving Size | 1 Vegetarian Capsule |
Life Extension L-Glutamine 500Mg Capsules
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Life Extension, L-Glutamine, 500 Mg, 100 Veg Capsules
Delivery $15.88
Life Extension, L-Glutamine, 500 mg, 100 Vegetarian Capsules
Delivery $40
L-Glutamine 500 mg - 100 caps
Delivery $35.75
Life Extension L-Glutamine, 500 mg L-glutamine, Amino Acid, Supports Muscle Health and Immune Health, Gluten-Free, Non-GMO, 100 Vegetarian Capsules
Free delivery between 10–15 July
Life Extension L-Glutamine 500 mg has proven to be a valuable addition to my supplement routine. The pure composition of L-Glutamine in convenient 500 mg capsules is effective for supporting muscle recovery and overall well-being. This supplement by Life Extension has become a reliable choice in maintaining my active lifestyle. Highly recommend for those looking for a straightforward and quality L-Glutamine supplement.
Life Extension L-Glutamine 500 mg capsules are excellent quality. I've been using them for workout recovery and digestive health, and I've seen noticeable improvements. The capsules are easy to take, and I appreciate that they’re vegetarian. The purity and effectiveness of the product really stand out, making it a trustworthy option for anyone looking to support gut health or muscle recovery. Highly recommend!
This L-glutamine supplement delivers impressive quality, with pure L-glutamine as its main ingredient. The taste is neutral, which makes it easy to mix into any shake or drink. The size of the package is generous, offering great value for the price. I’ve experienced noticeable benefits in recovery and muscle support since adding it to my routine. Overall, it’s a solid product for anyone looking to enhance their post-workout recovery, and I’m satisfied with its effectiveness.
I can honestly say this is a great product. Pure ingredients, l-glutamine essential amino acid brought by Life Extension experts will benefit everyone. This is also a good workout-training and fitness supplement. It increases appetite so I guess it affects the diet. Size is appropriate, no problem swallowing. I think that quality is pretty high. Packaging is small and there is no taste.
I purchased two bottles and have just finished the first one, gotta say I have noticed a significant improvement in my immune system as this is the influenza season and many people around me got sick, but since I took this glutamine, I was fine and healthy!! and even when I went to take care of my mom when she got a flu, I did not wear a mask, and of course by night time I had a bit of runny nose and sore throat, but I recovered the next day. I have just purchased 4 more bottles as the sale is on :D happy to recommend this product to anyone in need!
Pure ingredients. Quality is great.Size is small am convenient to swallow.L-glutamine is great for gut repair and it helps muscles to grow. Great after training it helps recovery. It benefits mood, muscles, gut. Package is small. Helps with my workout. No nasty taste. This supplement is great quality and price. Life Extension is trusted brand.
L-Glutamine is a conditionally essential amino acid that plays a crucial role in various physiological functions, including protein synthesis, gut health, and immune function. This supplement, available in a convenient 500 mg dosage, is designed for athletes, fitness enthusiasts, and anyone looking to support their overall health and recovery. Individual results may vary, but consistent use typically leads to noticeable benefits.
After using L-Glutamine 500 mg for a few weeks, I’ve experienced noticeable improvements in muscle recovery and digestive health. My soreness after intense workouts has significantly reduced, and I’m finding that I’m able to train more frequently without feeling overly fatigued. Additionally, I’ve noticed improvements in my gut health, as I’ve had fewer digestive issues such as bloating and discomfort.
While I appreciate that Life Extension’s L-Glutamine is vegetarian, I think this might be my last order. 🌱 Don’t get me wrong, it’s a solid product, but I’m reaching my limit with pills and capsules. I’d much rather switch to a powder or liquid form for better absorption and less strain on my liver and kidneys—especially with the growing stack of supplements I’m already taking. It's not a bad product, just not worth a repurchase for me. Time to explore other options! 🌊✨
First time taking it individually as a supplement. I’ve taken L-Glutamine included in my whey protein drink before though. In a protein shake I got some 5g of L-glutamine, in order to get the same amount I’d have to take 10 of these pills. So I think it is easier to drink a protein shake than to take 10 of these. But when I need an extra dose before I go to sleep for muscle recovery and gut health, these are great.
| Best by | 09/2025 |
| Dimensions | 5 x 5 x 10.9 cm , 0.1 kg |
| Serving Size | 1 Vegetarian Capsule |
