10 Best Pure Encapsulations L Glutamine Powder of 2025

Tested and Reviewed: Top 10 Pure Encapsulations L Glutamine Powder deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Designs for Health

Designs for Health Vegetarian L Glutamine Powder - Pure 3000mg Amino Acid Supplement - Promotes Muscle Recovery, Gut + Immune Support - Non-GMO Gluten Free Drink Add-in (83 Servings / 250g)

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Editor's bottom line:

“This pure encapsulations l glutamine powder is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Promote Gut Health - Glutamine is essential to the health of the immune system and the digestive tract. In the gut, it promotes the health and proper functioning of mucosal cells, which are necessary for normal healing and repair. *
Support Muscle Repair - Glutamine also supports optimal muscle growth and strength and has been shown to be particularly useful in helping to maintain muscle tissue in already healthy individuals.*
Antioxidant Activity - Increases production of glutathione, the body's main antioxidant.*
Higher Standards. Better Results - Designs for Health maintains a strict, no-compromises approach to quality raw material selection. We never cut corners with substandard ingredients. This product is Non-GMO, Gluten-Free, and Vegetarian-friendly.
Clinically-Trusted Care - DFH is the #1 practitioner supplement brand recommended by functional medicine professionals and the #1 practitioner supplement brand personally trusted by functional medicine professionals.**

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Picked by 397 people today

9.5

Nutricost

Nutricost L-Glutamine Powder (500 Grams) Unflavored - Gluten Free & Non-GMO, 100 Servings

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Main Highlights

5000mg of L-Glutamine Powder Per Serving (100 Servings)
1.1 Pounds (500G) of L-Glutamine Powder Per Bottle
Vegetarian Friendly L-Glutamine Powder
Non-GMO, Gluten Free, Soy Free
Manufactured In a NSF Certified, GMP Compliant, FDA Registered Facility

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9.5

Nutricost

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

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Main Highlights

Quality Assurance: 3rd Party Tested, Non-GMO, and Gluten Free
Product Size: Contains 1 kilogram (2.2 pounds) of pure L-Glutamine powder
Manufacturing Standards: Produced in a NSF-Certified, GMP-compliant and FDA-registered facility in the USA
Clean Formula: Simple and pure ingredients without artificial fillers or additives
Dietary Compatibility: Suitable for vegan diets and free from gluten

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9.2

Nutricost

Nutricost L-Glutamine Powder 250 Grams

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Main Highlights

250 Grams of L-Glutamine Per Bottle
50 Servings of L-Glutamine Per Bottle
5 Grams of L-Glutamine Per Serving (Scoop Included)
Vegan, Non-GMO, Gluten Free, Unflavored (No Flavoring Added - Natural)
Manufactured In a NSF Certified, GMP Compliant, FDA Registered Facility

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9.0

NAKED

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

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Main Highlights

ONLY PURE GLUTAMINE FOR DEVELOPMENT AND RECOVERY: Naked's L-Glutamine Powder is a vegan and non-GMO pharmaceutical-grade amino acid supplement, manufactured in the USA and free of fillers, flavors, colors and sweeteners. This amino acid helps stimulate muscle growth and significantly improves recovery time.
FORMULATED FOR OPTIMAL ABSORPTION: Each scoop contains undiluted free-form l-glutamine in a finely micronized powder designed to maximize absorption of this key amino acid.
GREAT FOR POST-WORKOUT: Glutamine is a protein building block that protects your body from the negative effects of overtraining. You will notice marked improvements in performance, strength, endurance, recovery, immune function and gut health.
HEALTH BENEFITS: Helps stomach ulcers, leaky gut, improves IBS by balancing mucus production, boosts metabolism and cellular detoxification, and helps curb cravings for sugar and alcohol. An essential neurotransmitter in the brain, Glutamine also helps with memory, focus and concentration.*
THIRD-PARTY TESTING: All Naked Nutrition products are independently third-party tested for purity, safety and nutritional value.

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8.8

Pure Encapsulations

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

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Main Highlights

Gastrointestinal Health: L-glutamine powder nutritionally supports the mucosal lining and healthy functioning of the gastrointestinal tract*
Supports Lean Muscle: This L-glutamine supplement also helps support and preserve lean muscle mass, especially in times of metabolic stress*
Amino Acid: L-glutamine is the most abundant amino acid in the body; glutamine is utilized by the body for tissue repair and gastrointestinal tract support*
Pure Quality: Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then carefully manufactured and tested to verify potency and purity
Pure Difference: What we leave out matters, too; Pure Encapsulations products are free from common allergens, artificial or unnecessary ingredients, and GMOs

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8.6

Pure Encapsulations

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

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Main Highlights

Gastrointestinal Health: L-glutamine powder nutritionally supports the mucosal lining and healthy functioning of the gastrointestinal tract*
Supports Lean Muscle: This L-glutamine supplement also helps support and preserve lean muscle mass, especially in times of metabolic stress*
Amino Acid: L-glutamine is the most abundant amino acid in the body; glutamine is utilized by the body for tissue repair and gastrointestinal tract support*
Pure Quality: Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then carefully manufactured and tested to verify potency and purity
Pure Difference: What we leave out matters, too; Pure Encapsulations products are free from common allergens, artificial or unnecessary ingredients, and GMOs

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8.3

THORNE

THORNE - L-Glutamine Powder - Glutamine Powder for GI Health and Immune Function* - 17.8 Oz

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Main Highlights

Muscles: Supports muscle recovery after exercise or injury*
Multiple Benefits: Promotes GI and nerve health and healthy immune function*
Additional Support: Supports cellular repair and collagen formation*
3rd Party Contents Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.1

Pure Encapsulations

Pure Encapsulations L-Glutamine 850 mg | Supplement for Immune and Digestive Support, Gut Health and Lining Repair, Metabolism Boost, and Muscle Support* | 250 Capsules

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Main Highlights

Gastrointestinal Health: l-Glutamine nutritionally supports the mucosal lining and healthy functioning of the gastrointestinal tract.*
Supports Lean Muscle: l-Glutamine also helps promote and preserve lean muscle mass.*
Amino Acid: l-Glutamine is the most abundant amino acid in the body. In times of metabolic stress, glutamine is utilized by the body for tissue repair and gastrointestinal tract support.*
Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity.
Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

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8.1

Pure Encapsulations

Pure Encapsulations L-Glutamine 850 mg | Supplement for Immune and Digestive Support, Gut Health and Lining Repair, Metabolism Boost, and Muscle Support* | 90 Capsules

Free Shipping

Main Highlights

Gastrointestinal Health: l-Glutamine nutritionally supports the mucosal lining and healthy functioning of the gastrointestinal tract.*
Supports Lean Muscle: l-Glutamine also helps promote and preserve lean muscle mass.*
Amino Acid: l-Glutamine is the most abundant amino acid in the body. In times of metabolic stress, glutamine is utilized by the body for tissue repair and gastrointestinal tract support.*
Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity.
Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

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Our Best Overall Choice

Best Choice

9.7

Designs for Health

Designs for Health Vegetarian L Glutamine Powder - Pure 3000mg Amino Acid Supplement - Promotes Muscle Recovery, Gut + Immune Support - Non-GMO Gluten Free Drink Add-in (83 Servings / 250g)

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Promote Gut Health - Glutamine is essential to the health of the immune system and the digestive tract. In the gut, it promotes the health and proper functioning of mucosal cells, which are necessary for normal healing and repair. *
Support Muscle Repair - Glutamine also supports optimal muscle growth and strength and has been shown to be particularly useful in helping to maintain muscle tissue in already healthy individuals.*
Antioxidant Activity - Increases production of glutathione, the body's main antioxidant.*
Higher Standards. Better Results - Designs for Health maintains a strict, no-compromises approach to quality raw material selection. We never cut corners with substandard ingredients. This product is Non-GMO, Gluten-Free, and Vegetarian-friendly.
Clinically-Trusted Care - DFH is the #1 practitioner supplement brand recommended by functional medicine professionals and the #1 practitioner supplement brand personally trusted by functional medicine professionals.**

Show Price

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