11 Best Glutamine Supplement 2021 (Review & Comparison)

11 Best Glutamine Supplement 2021 (Review & Comparison)

Updated on – 06 Feb 2021

Glutamine is the most abundant amino acid present in your muscle tissues.

L-glutamine is an important form and is produced naturally in the human body.

Almost 60% of the skeletal muscle was made up of L-glutamine.

One hour of exercise reduces glutamine level by 40%, which affects your immunity, and the primary reason why bodybuilders are more susceptible to illness.

Maintaining this amino acid level is crucial as it helps minimize muscle breakdown and even increase muscle mass.

So here comes the role of supplements which helps in your well-being.

Benefits of L-Glutamine Supplements

  • L-glutamine supplements play a key role in protein metabolism, cell recovery, muscle growth, prevents ulcers, intestinal and gut problems.
  • Helps with memory, focus, and concentration.
  • Balances pH
  • A tremendous fat burner, and also boosts immunity.

Factors You Might Consider While Buying Glutamine Supplements

  • For fast recovery, and speed growth
  • Leaky gut, ulcers
  • Price
  • Customer satisfaction
  • Value for money
  • Easy to use, and easy to swallow

11 Best Glutamine supplements

#1. Body Fortress 100% Pure Glutamine Powder

11 Best Glutamine Supplement

Body Fortress Glutamine recorded 0.998 g of glutamine per 1 g of product and totaled 4.49 g per serving.

Body Fortress Glutamine contains 100% glutamine, and 0% sugar, gluten, aspartame, milk, yeast, wheat, artificial colors, artificial flavors, and artificial preservatives.


For adults, mix one (1) teaspoon (4.5 g) into 4-8 ounces of water or your favorite beverage and take one hour before your workout.

Consume a second serving immediately after your workout to speed recovery.

What We Like
  • Value for money
  • Speed recovery of muscle loss
What We Didn't Like
  • Might experience an awful taste.

#2. Bulk Supplements L-Glutamine Powder (1 Kilogram)

11 Best Glutamine Supplement

This is a clean and pure powder with no fillers or additives.

It is a non-GMO (genetically modified organism) product. It promotes muscle growth and prevents muscle loss.

It mixes easily with water or any juice and had no taste.


Take 500 mg (scant 1/4 tsp) to 1000 mg (just over 1/3 tsp) up to three times a day. For best results, take immediately after exercising.

What We Like
  • Easy to swallow
  • Best value for money
What We Didn't Like
  • Might have an unpleasant smell

Also read – Best Low Carb Protein Powder

#3. Nutricost L-Glutamine Powder (500 Grams) Unflavored

11 Best Glutamine Supplement

Nutricost L-Glutamine is another dietary supplement available in clean and pure powder form. There were no other ingredients apart from these.

Nutricost L-Glutamine powder is a non-GMO product and gluten-free product.

Serving size is 1 scoop (5g), a serving container is 500g, and total servings are 100 per bottle.


As a dietary supplement mix 1 scoop with 6-10 ounces of water or juice. Consume immediately after a workout, and take another serving prior to bed.

What We Like
  • Easy to swallow, and high quality
  • Value for money
What We Didn't Like
  • Might have an awful smell.

#4. Kaged Muscle Glutamine Powder

11 Best Glutamine Supplement

Unlike many products available in the market, Kaged muscle Glutamine powder is made through a process of fermentation, mean it is not synthetic.

It is an excellent dietary supplement to all the athletes for fast recovery and supports muscle growth.

Kaged muscle Glutamine is a superior quality vegan, non-GMO, and gluten-free product.

It offers 5g of glutamine per serving and does not contain any other ingredient.


Mix one scoop in any of your favorite drink or protein shake. For better results consume 3 servings daily.

What We Like
  • Good value for money
  • Mixes well
What We Didn't Like
  • Might feel nauseating

#5. CoreSeries BCAA Glutamine

11 Best Glutamine Supplement

CoreSeries BCAA Glutamine is most effective in men and women who are serious about reducing exercise-induced muscle damage, increasing post-workout muscle growth, improving immune function, and stimulating protein synthesis.

BCAA (branched chain amino acids) in this product is in 2:1:1 ratio of L-Leucine, L-Valine, and L-Isoleucine.

With 5g of glutamine, 8g of BCAA (branched chain amino acids) and 1g of coconut water per serving and no artificial sweeteners, coloring agents, and preservatives this product is one of the best in the provided list.

It offers 30 servings per container. CoreSeries BCAA Glutamine is available in 5 different flavors.


Mix one level scoop of CoreSeries BCAA Glutamine with 10-12 fluid ounces of cold water or any beverage 30-45 minutes before, during or immediately after a workout.

What We Like
  • Excellent value for money
  • Good quality product with a simple and effective formula
What We Didn't Like
  • Do not exceed 4 servings per day
  • You need to shake it for some time for proper mixing.

Also check out – Best Creatine Supplement

#6. NOW® Sports L-Glutamine Powder, 1 lb

11 Best Glutamine Supplement

Another free form L-glutamine that does not have any unnecessary ingredients. NOW Sports Powder is a great decision.

It is an informed-sport certified, informed choice-certified NON -GMO product.

A widely-trusted brand NOW gives you the quality you want and need for an L-glutamine supplement. As the label depicts, it is a nitrogen transporter and helps for better recovery, more muscle growth, and extra brain power.

It also works as a good immunity booster.


Take 1 rounded teaspoon in juice, preferably between meals, 1 to 2 times daily as needed.

What We Like
  • Mixes well with juice or water or any protein drink
  • Easy to use
What We Didn't Like
  • Might not work well if you have a problem with glutamates.
  • For better results take this product in combination with NOW® B-6, P-5-P, and Whey Protein.

#7. Optimum Nutrition L-Glutamine Muscle Recovery Capsules, 1000mg, 240 Count

11 Best Glutamine Supplement

Optimum Nutrition comes up with the first capsule option in this list.

If you would like to opt for a trusted source and big brand, then Optimum nutrition would be the smart option.

The ingredients present in it were gelatin and magnesium stearate (simple salt) only.

These capsules were being made with pure L-glutamine, and highly concentrated. The serving size is 1000 mg of pure L-glutamine per 2 capsules.


Consume 1-2 capsules between meals, 30-45 minutes before workouts and /or immediately after workouts.

What We Like
  • Can be used for leaky gut
  • Also helps in indigestion Takes control over sugar
What We Didn't Like
  • Little expensive when compared with other supplements.
  • Misleading product title. You need to take 2 capsules to make 1 gram, it means you have a total of 120 grams only in the bottle.

#8. Pure Science L-Glutamine Supplement

11 Best Glutamine Supplement

Pure Science L-glutamine supplement is the highest dosage per capsule available on Amazon at 750 mg and at 1500 mg for potency and efficacy.

Pure Science Supplements supports immune function. Improves energy levels and muscle mass thereby enhances athletic performance.

Pure Science L-glutamine supplement also comes handy when it comes to digestive problems, like leaky gut.

Pure Science L-glutamine supplement is the GMP (good manufacturing practices) certified product.

It is a 100% pure vegetarian dietary supplement with ingredients included hypromellose, rice flour, and magnesium stearate.


1 capsule taken directly preferably with meals. Since the amount of L-glutamine is high in one dose, it is not recommended to exceed.

What We Like
  • No additives added
  • Easy to swallow, and highly stable.
  • Money back guarantees option is available if you are not satisfied with the quality of the product delivered.
What We Didn't Like
  • Expensive

Also read – Best vegan protein bars

#9. Naked Glutamine

11 Best Glutamine Supplement

Naked L-Glutamine Powder is a pharmaceutical-grade amino acid supplement, manufactured in the USA and free of fillers, flavors, colors, and sweeteners.

Each scoop contains undiluted free form L-glutamine designed to maximize absorption.

Naked L-Glutamine is great for post-workout. You will notice marked improvements in performance, strength, endurance, recovery, immune function and gut health.

It boosts metabolism, and cellular detoxification helps reduce cravings for sugar and alcohol and also improves memory, focus, and concentration.


The serving size with this brand is 5 grams, so you only have to consume a serving once or twice daily.

It comes with 200 servings, so at the least, it will last you over 2 months.

What We Like
  • Fastest dissolution in water, juice or any protein drink
  • Vegan, gluten-free, non-GMO and soy-free.
What We Didn't Like
  • Expensive
  • Might experience rashes if exceeded the maximum dose.

#10. NutraBio 100% Pure L-Glutamine powder

11 Best Glutamine Supplement

NutraBio 100% pure L-glutamine is a vegetable-based, naturally fermented 100% L-Glutamine manufactured in the United States.

Every batch is HPLC (high-pressure liquid chromatography) tested to ensure purity.

NutraBio 100% pure L-glutamine provides a 500-gram of pure raw unflavored glutamine per serving, and they give you 100 servings per container.

No fillers or manufacturing excipients. This product is also certified kosher, is non-GMO, gluten-free, hypoallergenic, and suitable for vegetarians.

NutraBio 100% pure L-glutamine powder boosts your growth hormone levels by as much as 400%.


As a dietary supplement, take one level scoop (5g) mixed with your favorite beverage 2-3 times daily.

What We Like
  • Very good for GERD and stomach acidity issues
What We Didn't Like
  • Unfavorable taste

#11. Pure Encapsulations – L-Glutamine 1000 mg – Hypoallergenic Supplement Supports Muscle Mass and Gastrointestinal Tract* – 90 Capsules

11 Best Glutamine Supplement

Pure encapsulation products are free from magnesium stearate, gluten, hydrogenated fat, artificial sweeteners, and other unnecessary excipients.


Each capsule) contains L-Glutamine (free-form) 1,000 mg. Other ingredients were a vegetarian capsule (cellulose, water), and ascorbyl palmitate.


1000mg 90 count.


As a dietary supplement, take 1 capsule, 1-3 times daily, between meals.

What We Like
  • The best product to anyone with leaky gut, food intolerance, and candida
  • Reduces sugar cravings.
  • Vegetarian capsule
What We Didn't Like
  • Taste and smell not good
  • Expensive


Having said about the best supplements, I would recommend Naked Glutamine powder, Now Sports L-glutamine powder, bulk supplements L-glutamine powder and Optimum Nutrition L-Glutamine Muscle Recovery Capsules.

These products have the overall benefits of natural L-glutamine, as they help in fast recovery, boosts the immune system, speed growth, for leaky gut, ulcers, value for money and customer satisfaction.

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