Best L-Glutamine Supplements on Amazon (2025): Expert-Approved Picks for Recovery & Performance

Written by Jacob Steele, Health & Wellness Product Reviewer
Last updated on May 22nd, 2025
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L-Glutamine is an essential amino acid that plays a crucial role in muscle recovery, gut health, and immune function. Whether you're an athlete looking to enhance recovery, someone seeking digestive support, or just want to maintain optimal health, finding the right L-Glutamine supplement is key. We've analyzed Amazon's top-rated options to bring you the best L-Glutamine supplements, considering factors like purity, dosage, value, and customer satisfaction. Our expert team has evaluated each product's ingredients, manufacturing standards, and effectiveness to help you make an informed decision. From pure L-Glutamine powders to convenient capsules, discover the perfect supplement to support your health and fitness goals.

#1

L-Glutamine Strawberry Lemonade Flavored (50 Servings) - 5g L-Glutamine Per Serving, Sweetened with Stevia

L-Glutamine Strawberry Lemonade Flavored (50 Servings) - 5g L-Glutamine Per Serving, Sweetened with Stevia
4.6(218 reviews)
$17.99
Elevate your wellness journey with our premium L-Glutamine with Stevia. Available in two delicious flavors, Strawberry Lemonade and Peach Mango, this ...
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AlyshaReviewed in the United States April 9, 2025
Loooove this stuff, if I feel bloated in the slightest, as soon as I drink it I feel so much better. If I could give it a 10 I would. This flavor and the mango peach flavor are the best. Fruit punch i...

L-Glutamine is a versatile amino acid that plays a crucial role in muscle recovery, immune function, and gut health. As one of the most abundant amino acids in the body, it's essential for maintaining optimal health and performance.

#2

Optimum Nutrition L-Glutamine Muscle Recovery Capsules, 1000mg, 240 Count (Package May Vary)

Optimum Nutrition L-Glutamine Muscle Recovery Capsules, 1000mg, 240 Count (Package May Vary)
4.7(14,382 reviews)
$21.02
Optimum Nutrition Glutamine 1000mg, 120 Capsules are the most abundant amino acid in the body and they help to Support Muscle Recovery.
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Amazon CustomerReviewed in the United States February 14, 2016
It's been a good product for me already, especially now that I am over 6 decades old. It wasn't long ago that this fact literally slapped me in the face of realization and I decided to start fighting ...

When selecting an L-Glutamine supplement, purity and quality should be your top priorities. Look for products that are free from unnecessary additives and fillers.

#3

NOW Foods Sports Nutrition, L-Glutamine, Double Strength 1,000 mg, Amino Acid, 120 Veg Capsules

NOW Foods Sports Nutrition, L-Glutamine, Double Strength 1,000 mg, Amino Acid, 120 Veg Capsules
4.7(829 reviews)
$13.79
Glutamine is considered to be a conditionally essential amino acid, which means that under certain circumstances, the body may require more glutamine ...
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StephanieReviewed in the United States February 22, 2023
I believe this product to be working as it intends. I feel better and seem to recover faster when using this product. It is very large, however, the gel capsule makes it easy for me to swallow.

The timing of L-Glutamine supplementation can significantly impact its effectiveness. Many athletes prefer taking it post-workout to support muscle recovery.

#4

Pure L-Glutamine Made in The USA - 200 Servings - 1,000g, 2.2lb Bulk, Vegan, Non-GMO, Gluten and Soy Free. Minimize Muscle Breakdown & Improve Protein Synthesis. No Additives

Pure L-Glutamine Made in The USA - 200 Servings - 1,000g, 2.2lb Bulk, Vegan, Non-GMO, Gluten and Soy Free. Minimize Muscle Breakdown & Improve Protein Synthesis. No Additives
4.7(1,887 reviews)
$34.99
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TyReviewed in the United States October 12, 2024
It's a good product, but a little pricy. I'm going try some cheaper brands that offer 'clean glutamine' to see if there's a noticeable difference.

Dosage is another critical factor to consider. While individual needs may vary, most people benefit from 5-10 grams per day, divided into multiple servings.

#5

Pure Encapsulations L-Glutamine Powder - Supplement for Immune and Digestive Support, Gut Health and Lining, Metabolism, and Muscle Support* - with Pure Free-Form L-Glutamine - 8 Ounces

Pure Encapsulations L-Glutamine Powder - Supplement for Immune and Digestive Support, Gut Health and Lining, Metabolism, and Muscle Support* - with Pure Free-Form L-Glutamine - 8 Ounces
4.7(907 reviews)
$53.40
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C. ClarkReviewed in the United States February 6, 2025
My Nutrionist recommended this for me. Really helps making my gut healthier. I highly recommend.

L-Glutamine's benefits extend beyond muscle recovery. It's also known for supporting gut health and immune function, making it a valuable addition to your wellness routine.

#6

Muscletech 100% L-Glutamine Powder for Enhanced Muscle Recovery - Pure L Glutamine Muscle Growth Builder & Energy Boosting Nutritional Supplement for Men & Women - Unflavored, 60 Servings

Muscletech 100% L-Glutamine Powder for Enhanced Muscle Recovery - Pure L Glutamine Muscle Growth Builder & Energy Boosting Nutritional Supplement for Men & Women - Unflavored, 60 Servings
4.7(4,576 reviews)
$17.99
MuscleTech 100% Glutamine supplies 5g of L-glutamine per serving, which works to rapidly replenish the L-glutamine used during training. Glutamine is ...
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taylor leighReviewed in the United States March 14, 2025
great price and quantity. i mix it in room temp water and chug it. its quite flavorless but does have just a twinge of something there. just basic, pure glutamine powder. i haven’t been using it long ...

For those with specific dietary requirements, there are various L-Glutamine options available, including vegan and gluten-free formulations.

#7

Pure Vegan L-Glutamine Powder Supplement - Evlution Nutrition Nitric Oxide Booster 5g L Glutamine Supplement for Post Workout Recovery Enhanced Pumps Gut Health Energy and Immunity - Unflavored

Pure Vegan L-Glutamine Powder Supplement - Evlution Nutrition Nitric Oxide Booster 5g L Glutamine Supplement for Post Workout Recovery Enhanced Pumps Gut Health Energy and Immunity - Unflavored
4.7(1,554 reviews)
$18.49
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Jonathan BlackReviewed in the United States August 29, 2023
I don't usually purchase this brand often and this was my first time getting the L Glutamine through them. I was a little hesitant just because I know from experience on years of utilizing this in pow...

Quality L-Glutamine supplements should be easily soluble and have minimal taste, making them convenient to incorporate into your daily routine.

#8

Pure Encapsulations L-Glutamine 500 mg - Supplement for Immune and Digestive Support, Gut Health and Lining, Metabolism, and Muscle Support* - with Free-Form L-Glutamine - 90 Capsules

Pure Encapsulations L-Glutamine 500 mg - Supplement for Immune and Digestive Support, Gut Health and Lining, Metabolism, and Muscle Support* - with Free-Form L-Glutamine - 90 Capsules
4.6(1,869 reviews)
$23.00
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Chloes MomReviewed in the United States February 24, 2024
While the supplement is probably very good, I gave it three stars because it does contain corn, which I have a strong reaction to, and that is not mentioned on the bottle. I’ve had to eliminate corn a...

Consider your lifestyle and goals when choosing an L-Glutamine supplement. Athletes may benefit from higher doses, while those using it for general wellness might prefer a standard dose.

#9

Life Extension L-Glutamine, 500 mg L-glutamine, Amino Acid, Supports Muscle Health and Immune Health, Gluten-Free, Non-GMO, 100 Vegetarian Capsules

Life Extension L-Glutamine, 500 mg L-glutamine, Amino Acid, Supports Muscle Health and Immune Health, Gluten-Free, Non-GMO, 100 Vegetarian Capsules
4.6(1,892 reviews)
$11.25
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 t...
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BrenReviewed in the United States September 17, 2024
Tengo varios meses consumiendo esta marca en Glutamina y ya es parte de mi rutina de suplementos dietéticos. Buena presentación y estado del producto. Mi última compra fueron tres frascos!

L-Glutamine works best when combined with a balanced diet and proper hydration. Ensure you're meeting your overall nutritional needs for optimal results.

#10

Nutricost L-Glutamine Powder 1 KG - Unflavored, Non-GMO, Gluten Free

Nutricost L-Glutamine Powder 1 KG - Unflavored, Non-GMO, Gluten Free
4.6(4,930 reviews)
$29.95
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Sandy HigginsReviewed in the United States May 29, 2023
I love this product and put it in my smoothie everyday. It helped me lose 15 pounds in about 5-6 weeks. I was so excited to have discovered this product; however, I learned that it can cause kidney st...

Remember that consistency is key when supplementing with L-Glutamine. Regular use over time will yield the best results for your health and performance goals.