10 Best L Glutamine Supplements

Seeking the finest best l glutamine supplements can be a daunting task, but worry not – our team has done the heavy lifting for you. We’ve meticulously sifted through the market, putting the foremost products in this category to the test under various conditions. Our intensive examination offers a deep insight into the merits and shortcomings of each option.

Our exhaustive review cuts to the core of each best l glutamine supplements item. We closely analyze key attributes, performance levels, and the price-to-value ratio to bring you a straightforward and unbiased viewpoint. Our review process is all-encompassing, focusing keenly on Longevity, Efficiency, and Affordability. Recognizing the unique requirements and budget constraints of different users, our goal is to help you pinpoint the best l glutamine supplements that resonates most with your individual needs.

Editor’s Note: Updated in March 2024, this review now includes the latest data and a wider selection of products, ensuring that our recommendations stay relevant and comprehensive, guiding you through the ever-changing marketplace of best l glutamine supplements.

Top Products for best l glutamine supplements

# Image Product Name Price
1 NOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules NOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules Buy Now – $9.75 ($0.08 / Count)
2 BULKSUPPLEMENTS.COM L-Glutamine Powder - Glutamine Supplement, L Glutamine 5000mg, L Glutamine Powder - Gut Health & Recovery, Unflavored & Gluten Free, 5000mg (5g) per Serving, 1kg (2.2 lbs) BULKSUPPLEMENTS.COM L-Glutamine Powder – Glutamine Supplement, L Glutamine 5000mg, L Glutamine Powder – Gut Health & Recovery, Unflavored & Gluten Free, 5000mg (5g) per Serving, 1kg (2.2 lbs) Buy Now – $33.96 ($0.96 / Ounce)
3 L Glutamine Capsules - No Fillers (500mg, 120 Count) Manufactured in The USA, Keto Safe, Vegan Friendly, Third Party Tested (for Endurance and Gut Health) by Double Wood L Glutamine Capsules – No Fillers (500mg, 120 Count) Manufactured in The USA, Keto Safe, Vegan Friendly, Third Party Tested (for Endurance and Gut Health) by Double Wood Buy Now – $7.95 ($0.07 / Count)
4 Thorne L-Glutamine - Amino Acid Supplement for GI Health and Immune Function - 90 Capsules Thorne L-Glutamine – Amino Acid Supplement for GI Health and Immune Function – 90 Capsules Buy Now – $23.00 ($0.26 / Count)
5 Nutricost L-Glutamine Powder (500 Grams) Unflavored - Gluten Free & Non-GMO, 100 Servings Nutricost L-Glutamine Powder (500 Grams) Unflavored – Gluten Free & Non-GMO, 100 Servings Buy Now – $19.95 ($1.13 / Ounce)
6 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 Buy Now – $23.00 ($0.26 / Count)
7 DEAL SUPPLEMENT L-Glutamine 1,000mg, 300 Capsules – Easily Absorbed Free Form, Plant Based Source, Key Amino Acid – Supports Gut Health & Muscle Recovery – Unflavored Pills, Non-GMO DEAL SUPPLEMENT L-Glutamine 1,000mg, 300 Capsules – Easily Absorbed Free Form, Plant Based Source, Key Amino Acid – Supports Gut Health & Muscle Recovery – Unflavored Pills, Non-GMO Buy Now – $13.95 ($0.05 / Count)
8 Nutricost L-Glutamine 800mg, 180 Capsules - Gluten Free, Non-GMO Nutricost L-Glutamine 800mg, 180 Capsules – Gluten Free, Non-GMO Buy Now – $14.95 ($0.08 / Count)
9 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) Buy Now – $24.11 ($0.10 / Count)
10 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 Buy Now – $11.25 ($0.11 / Count)

1. NOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules

NOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules

Key Features:

  • Amino acid/supports immune function: Glutamine is considered to be a conditionally essential amino acid, which means that under certain circumstances, the body may require more glutamine than it can produce. In that case, supplementing with glutamine may help with recovery of the amino acid in the body.
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Nitrogen transporter: In the body, glutamine functions as a major nitrogen transporter and is critical for the maintenance of healthy nitrogen balance.Store in a cool, dry place after opening
  • Classifications/certifications: Halal, non-gmo, kosher, dairy free, egg free, made without gluten, nut free, soy free, vegan/vegetarian
  • GMP quality assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers’ recommendations, when provided.

Buy Now From Amazon – $9.75 ($0.08 / Count)


2. BULKSUPPLEMENTS.COM L-Glutamine Powder – Glutamine Supplement, L Glutamine 5000mg, L Glutamine Powder – Gut Health & Recovery, Unflavored & Gluten Free, 5000mg (5g) per Serving, 1kg (2.2 lbs)

BULKSUPPLEMENTS.COM L-Glutamine Powder - Glutamine Supplement, L Glutamine 5000mg, L Glutamine Powder - Gut Health & Recovery, Unflavored & Gluten Free, 5000mg (5g) per Serving, 1kg (2.2 lbs)

Key Features:

  • ✔️ Supplement for any Routine!: Take any routine to the next level with this semi-essential amino acid. Adding L-Glutamine powder, or Glutamine supplement, to your diet helps your body recover faster and more efficiently, helping you last for longer periods of time.* Let our Glutamine powder part of your activities!
  • ✔️ Boost your Overall Health & Wellness!: Give your body an important boost with our Glutamine powder. Plus, L-Glutamine nutritional supplements, or L-Glutamine 5000mg, helps to support optimal gut health so you can feel your best.* Plus, it bolsters your immune system and natural defenses for an overall healthier you.*
  • ✔️ Unflavored with no Unwanted Extras: Get the benefits of Glutamine supplement without the unwanted components. Plus, our L-Glutamine powder, in L Glutamine 5000mg form, is gluten free, soy free, dairy free and no added sugar. Take advantage of this pure and clean Glutamine powder as part of your daily routine!
  • ✨ Goes well with BCAAs!: Amino acids are essential for your body and health. Our L-Glutamine powder, a Glutamine supplement, is easy to add to any beverage of your choosing or just simply with water. Take 2 tsp (5000mg) of our glutamine powder with BCAA supplements for a more optimal results!
  • ⭐ Trusted Quality: All our L-Glutamine supplements undergo rigorous third party testing to confirm they meet our standards for purity, potency and safety. Enjoy peace of mind knowing that you’re getting a safe and effective supplement for maximum results.

Buy Now From Amazon – $33.96 ($0.96 / Ounce)


3. L Glutamine Capsules – No Fillers (500mg, 120 Count) Manufactured in The USA, Keto Safe, Vegan Friendly, Third Party Tested (for Endurance and Gut Health) by Double Wood

L Glutamine Capsules - No Fillers (500mg, 120 Count) Manufactured in The USA, Keto Safe, Vegan Friendly, Third Party Tested (for Endurance and Gut Health) by Double Wood

Key Features:

  • GLUTAMINE FOR GUT HEALTH AND EXERCISE ENDURANCE – L Glutamine Powder may help with leaky gut repair, bloating, gas, discomfort, and intestinal wall support. It can also help promote exercise endurance in the gym
  • VEGAN AND KETO FRIENDLY L GLUTAMINE – Double Wood’s L-Glutamine capsules (El Glutamina) are not synthesized from animal sources and are safe for both vegans and those in ketosis
  • NO FILLERS, MANUFACTURED IN THE USA, NON-GMO, GLUTEN FREE – Double Wood’s L Glutamine Capsules contain no fillers, are manufactured in the USA, are Gluten Free, and Non-GMO
  • TWO MONTH SUPPLY – Each bottles contains 60 servings of 1,000mg L-Glutamine with no fillers. (120 capsules, 500mg per capsules)
  • SATIFSACTION ASSURED – If you aren’t happy with our l-glutamine powder capsules for any reason please contact us and we promise to make things right

Buy Now From Amazon – $7.95 ($0.07 / Count)


4. Thorne L-Glutamine – Amino Acid Supplement for GI Health and Immune Function – 90 Capsules

Thorne L-Glutamine - Amino Acid Supplement for GI Health and Immune Function - 90 Capsules

Key Features:

  • L-Glutamine: An amino acid that helps with post-exercise muscle cell repair and promotes gastrointestinal and immune system health*
  • Gut Health: Benefits gastrointestinal health and helps maintain gut permeability and optimal gut barrier function*
  • Recovery: Helps restore plasma glutamine levels depleted after periods of physical stress, such as prolonged exhaustive exercise*
  • Immune Support: Helps maintain immune health and supports wound healing*
  • Trusted: Thorne is trusted by 100+ pro teams. Thorne is the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is a proud partner of U.S. Olympic Teams

Buy Now From Amazon – $23.00 ($0.26 / Count)


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

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

Key Features:

  • 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 GMP Compliant, FDA Registered Facility

Buy Now From Amazon – $19.95 ($1.13 / Ounce)


6. 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

Key Features:

  • 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

Buy Now From Amazon – $23.00 ($0.26 / Count)


7. DEAL SUPPLEMENT L-Glutamine 1,000mg, 300 Capsules – Easily Absorbed Free Form, Plant Based Source, Key Amino Acid – Supports Gut Health & Muscle Recovery – Unflavored Pills, Non-GMO

DEAL SUPPLEMENT L-Glutamine 1,000mg, 300 Capsules – Easily Absorbed Free Form, Plant Based Source, Key Amino Acid – Supports Gut Health & Muscle Recovery – Unflavored Pills, Non-GMO

Key Features:

  • Special Features – Extra strength L-Glutamine capsules, easily digested and absorbed free form, 100% pure plant-based ingredients, unflavored glutamine powder filled pills.
  • Benefits & Use – Enjoy key amino acid support for immune function, muscle recovery, intestinal gut health, as well as serving as a major fuel source for rapidly dividing cells, making it an essential component for overall well-being and optimal bodily functions.
  • Dosage & Servings – 300 capsules per bottle with only 2 capsules per serving, contains 1,000mg unadulterated L-Glutamine per dose, up to a 150-day supply.
  • Purpose – L-Glutamine in its free form will bypass the need for digestion and can be more easily and efficiently absorbed by the intestines, ensuring maximum utilization and replenishment over time.
  • Quality Ensured – Non-GMO ingredients that are 3rd party lab tested and passed. Made without gluten, dairy, eggs, peanuts, soy, wheat, & yeast.

Buy Now From Amazon – $13.95 ($0.05 / Count)


8. Nutricost L-Glutamine 800mg, 180 Capsules – Gluten Free, Non-GMO

Nutricost L-Glutamine 800mg, 180 Capsules - Gluten Free, Non-GMO

Key Features:

  • L-Glutamine Dietary Supplement
  • 800mg of L-Glutamine per Capsule
  • 180 Servings of L-Glutamine Powder Per Bottle
  • Non-GMO, Gluten Free, Soy Free
  • Manufactured In a GMP Compliant, FDA Registered Facility

Buy Now From Amazon – $14.95 ($0.08 / Count)


9. 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)

Key Features:

  • 1000 milligram of pure l glutamine per 2 capsules
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Most abundant amino acid in the body
  • Plays an important role in muscle protein development
  • During prolonged periods of intense exercise, glutamine levels may be depleted

Buy Now From Amazon – $24.11 ($0.10 / Count)


10. 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

Key Features:

  • Fuel your active lifestyle—Glutamine is an amino acid your body uses for protein production. While it’s a must-have among serious athletes, glutamine is a great option for anyone who leads an active lifestyle
  • Gut healthy, immune strong—Glutamine can be found in the blood, as well as stored in the skeletal muscles and liver, and in higher concentrations than any other amino acid. It’s an important energy source for cells lining the gut and immune cells, making it critical for a healthy digestive tract and immune response.
  • Antioxidant support—Regular body movement is terrific for whole-body health. But engaging in heavy exercise can affect glutamine levels, causing stress to the body. Our L-Glutamine formula helps support antioxidant defenses to maintain muscle health.
  • Ingredients matter—Sourced using only the finest raw ingredients with the purity and potency your body deserves. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every product we produce.     
  • Live your healthiest life—For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. That’s why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

Buy Now From Amazon – $11.25 ($0.11 / Count)


Guiding You to the Best best l glutamine supplements Choice

Clarify Personal Requirements

Define what you need from the best l glutamine supplements. Understand the key functionalities that are important for your specific application.

Emphasis on Product Quality

Focus on the quality of the best l glutamine supplements. Quality products are typically more reliable and offer better performance and longevity.

Brand Analysis

The brand’s reputation can significantly impact your satisfaction. A reputable brand usually indicates a commitment to quality and customer satisfaction.

Checking Seller’s Track Record

Evaluate the seller’s reliability and customer service history. A trustworthy seller is as important as the product quality itself.

Real User Experiences

Real user reviews and ratings can offer a glimpse into the product’s actual performance and reliability.

Product Lifespan and Upkeep

The durability and maintenance needs of the best l glutamine supplements are important. Products that are built to last and require minimal maintenance offer greater value.

Convenience and Usability

A best l glutamine supplements should be convenient to use and easily adaptable to your needs. User-friendly design often translates to a more pleasant experience.

Assessing Price for Quality

Weigh the price of the best l glutamine supplements against its quality and features. It’s important to find a balance between affordability and the benefits it offers.

Product Availability and Support

Easy access to the product and reliable support are important considerations. Ensure that you can easily purchase, receive, and get support for the best l glutamine supplements.

Rigorous Product Comparison

Do a thorough comparison of different best l glutamine supplements options. Evaluate each product’s pros and cons to understand which one best suits your needs.

Support and Warranty Importance

A good warranty and effective customer support can greatly enhance your experience. These factors provide security and assurance post-purchase.

Market Awareness

Stay informed about the latest developments in the best l glutamine supplements market. An up-to-date product can offer you the latest features and improvements.

Finalizing Your Choice

After careful consideration of all factors, choose the best l glutamine supplements that meets your specific needs, provides good value, and fits within your budget.


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