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Top 9 Best L-Glutamine Supplements

UpdatedFebruary 22, 2024

L-Glutamine is an amino acid that is naturally produced by the body. It is essential for several bodily functions, including muscle growth and repair, immune system support, and gut health. However, in certain cases, the body may not produce enough L-Glutamine, leading to deficiencies. This is where L-Glutamine supplements come in.

L-Glutamine supplements are a popular choice for athletes, bodybuilders, and fitness enthusiasts looking to enhance their performance and recovery. These supplements are available in various forms, including powders, capsules, and tablets. However, with numerous options on the market, choosing the best L-Glutamine supplement can be a daunting task.

When purchasing an L-Glutamine supplement, it is essential to consider factors such as the purity, dosage, and form of the supplement. Additionally, it is crucial to ensure that the supplement is free of any additives or fillers that may be harmful to your health.

We spent countless hours researching and testing various L-Glutamine supplements to identify the best ones on the market. In this article, we will review the top L-Glutamine supplements and provide you with all the information you need to make an informed decision.

Top 3 Best L-Glutamine Supplements

  1. Nutricost L-Glutamine 800mg, 180 Capsules
  2. Nutricost L-Glutamine Powder
  3. Sports Research L-Glutamine

We have researched and tested various L-Glutamine supplements to bring you the best options available on Amazon. L-Glutamine is an essential amino acid that plays a vital role in muscle recovery, immune system function, and gut health. Whether you're an athlete looking to improve your performance or someone looking to support your overall health and wellness, our list of the best L-Glutamine supplements has got you covered.

Nutricost L-Glutamine 800mg, 180 Capsules

Editor's Choice

Nutricost L-Glutamine 800mg transformed our digestive health in just weeks. Convenient and free from artificial additives, this supplement offers ample servings, eliminating frequent reorders. Note: the capsules are sizable, and some may experience stomach discomfort. Despite this, it's an affordable, effective choice we highly recommend.

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We recommend purchasing Nutricost L-Glutamine 800mg, 180 Capsules because it's a high-quality, non-GMO, and gluten-free dietary supplement that can help you maintain a healthy gut and support muscle recovery.

Pros

  • Each capsule contains 800mg of L-Glutamine, which is a higher dose than many other supplements on the market.
  • The bottle contains 180 servings, so it's a great value for the price.
  • The supplement is manufactured in a GMP-compliant, FDA-registered facility, which ensures that it's safe and effective.

Cons

  • Some users have reported experiencing stomach discomfort after taking the supplement.
  • The capsules are quite large, so they may be difficult to swallow for some people.
  • The supplement may not be suitable for vegetarians or vegans, as it contains gelatin.

We've been using Nutricost L-Glutamine 800mg, 180 Capsules for several weeks now, and we've noticed a significant improvement in our digestive health. The supplement is easy to take, and we appreciate that it's free from artificial colors, flavors, and preservatives. We also like that the bottle contains a large number of servings, so we don't have to reorder frequently.

One thing to note is that the capsules are quite large, so if you have trouble swallowing pills, you may want to look for a different supplement. Additionally, some users have reported experiencing stomach discomfort after taking the supplement, so it may not be suitable for everyone.

Overall, we think that Nutricost L-Glutamine 800mg, 180 Capsules is an excellent choice for anyone looking for a high-quality L-Glutamine supplement. It's affordable, effective, and easy to take, and we highly recommend it.

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We highly recommend Nutricost L-Glutamine Powder for anyone looking to improve their digestive health, immune support, weight management, and brain health support.

Pros

  • Provides 5000mg of L-Glutamine Powder per serving (100 servings)
  • Vegetarian-friendly and free from gluten, soy, and GMO
  • Manufactured in a GMP compliant, FDA registered facility

Cons

  • Unflavored, which may not be appealing to some
  • No scoop included in the package
  • Takes a couple of uses for the body to adjust

We've been using Nutricost L-Glutamine Powder for a couple of months now, and it has become an essential supplement in our fitness routine. This unflavored powder offers pure and high-quality fuel for muscle recovery and immune support. We love that it's free from gluten, soy, and GMO, and it's vegetarian-friendly.

One of the things we appreciate about Nutricost L-Glutamine Powder is that it provides 5000mg of L-Glutamine Powder per serving, which is more than what other brands offer. It's also great that it comes in a 1.1-pound bottle, which provides 100 servings.

While the unflavored feature of the product may not be appealing to some, we appreciate that it's versatile and can be mixed with other drinks or food. However, it takes a couple of uses for the body to adjust, and some may experience bloating or discomfort at first.

Overall, Nutricost L-Glutamine Powder is an excellent product for anyone looking to improve their overall health and wellness. It's manufactured in a GMP compliant, FDA registered facility, which assures us of its quality and safety. We highly recommend it to anyone looking for a top-quality L-Glutamine supplement.

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If you're looking for a high-quality L-glutamine supplement to support muscle recovery, Sports Research L-Glutamine is a great choice.

Pros:

  • Supports muscle growth and repair
  • Boosts immune system function
  • Reduces muscle soreness and fatigue
  • Enhances endurance and performance
  • Made with pharmaceutical-grade ingredients
  • Convenient powder form for easy mixing

Cons:

  • Some users may experience mild digestive discomfort initially
  • May not be suitable for individuals with certain medical conditions or allergies
  • Requires consistent use for optimal results

Sports Research L-Glutamine is a highly regarded supplement that has gained popularity among athletes and fitness enthusiasts alike. With its potent formula, it offers numerous benefits for those looking to improve their athletic performance and recovery. One of its key advantages is its ability to support muscle growth and repair, making it an essential component of any workout regimen. Additionally, it can help boost the immune system, reduce muscle soreness, and enhance overall endurance, allowing individuals to push themselves harder during training sessions.

One of the standout features of Sports Research L-Glutamine is its purity and quality. Made with pharmaceutical-grade ingredients, it undergoes rigorous testing to ensure that it meets the highest standards of excellence. This commitment to quality ensures that users receive a safe and effective product that delivers consistent results. Furthermore, its convenient powder form makes it easy to mix into any beverage, allowing for quick and hassle-free consumption before or after workouts. Whether you're a professional athlete or just starting on your fitness journey, Sports Research L-Glutamine is a trusted companion that can help you reach your goals.

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If you're looking for a reliable L-glutamine supplement, NOW Supplements L-Glutamine 500mg is a great option to consider.

Pros

  • Supports immune function
  • Critical for maintaining healthy nitrogen balance
  • Halal, non-GMO, kosher, dairy-free, egg-free, made without gluten, nut-free, soy-free, vegan/vegetarian

Cons

  • Exposure to heat or sunlight may lead to melting/damage of product
  • Capsules may be too large for some people
  • Some customers may not see noticeable effects

We've been using NOW Supplements L-Glutamine 500mg for a while now and have seen some positive results. The supplement has helped us maintain a healthy nitrogen balance, which is important for overall health. We've also noticed an improvement in our immune function since starting to take this supplement.

One thing to keep in mind is that the capsules may be too large for some people, which can make them difficult to swallow. Additionally, we recommend being available during delivery to prevent exposure to heat or sunlight, which can damage the product.

Overall, we would recommend NOW Supplements L-Glutamine 500mg to anyone looking for a reliable L-glutamine supplement. With its various certifications and lack of common allergens, it's a great choice for those with dietary restrictions.

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If you're looking for a high-quality L-glutamine supplement to support muscle recovery, Optimum Nutrition Glutamine 1000mg, 120 Capsules is a great choice.

Pros

  • Contains 1000 milligrams of pure L-glutamine per two capsules
  • Most abundant amino acid in the body
  • Plays an important role in muscle protein development

Cons

  • Product may melt or get damaged if exposed to heat or sunlight during delivery
  • Some customers may prefer a different form of L-glutamine supplement
  • May not be suitable for those with certain medical conditions

We've been using Optimum Nutrition Glutamine 1000mg, 120 Capsules for a while now and have been impressed with the results. The capsules are easy to swallow and we appreciate that they contain pure L-glutamine without any unnecessary additives.

One of the biggest pros of this supplement is that it contains 1000 milligrams of L-glutamine per two capsules, which makes it easy to get the recommended daily dose. It's also worth noting that L-glutamine is the most abundant amino acid in the body and plays an important role in muscle protein development.

While we haven't experienced any issues with melting or damage during delivery, we do appreciate the product note warning customers to be available during delivery to prevent this from happening.

Overall, if you're looking for a high-quality L-glutamine supplement to support muscle recovery, we highly recommend Optimum Nutrition Glutamine 1000mg, 120 Capsules.

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If you're looking to recover faster and boost your overall health, BULKSUPPLEMENTS.COM L-Glutamine Powder is the product for you.

Pros

  • Helps recover faster and more efficiently
  • Supports optimal gut health
  • Bolsters your immune system and natural defenses

Cons

  • Needs a scoop that is not included
  • Some packages have different supplemental facts/dosage amounts
  • Unflavored taste may not be for everyone

We've been using BULKSUPPLEMENTS.COM L-Glutamine Powder for a while now, and we've experienced faster recovery times and an overall improvement in our gut health. Plus, we feel more energized and healthier thanks to the immune system boost.

While the unflavored taste may not be for everyone, we appreciate that it doesn't have any unwanted extras like gluten, soy, dairy, or added sugar. However, it's worth noting that you'll need to purchase a scoop separately.

Overall, we highly recommend BULKSUPPLEMENTS.COM L-Glutamine Powder for anyone looking to take their routine to the next level and improve their overall health and wellness.

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We highly recommend the Pure Encapsulations L-Glutamine Supplement for those seeking to support their immune and digestive systems, gut health, metabolism, and muscle support.

Pros

  • Supports gastrointestinal health
  • Helps preserve lean muscle mass
  • Made with premium ingredients

Cons

  • May not be suitable for those with sensitivities to certain ingredients
  • Some users may not see noticeable results
  • May be expensive for some budgets

This L-Glutamine supplement is a great choice for anyone looking to support their overall health. The supplement is designed to nutritionally support the mucosal lining and healthy functioning of the gastrointestinal tract, while also helping to support and preserve lean muscle mass, especially in times of metabolic stress. Additionally, L-Glutamine is the most abundant amino acid in the body and is utilized by the body for tissue repair and gastrointestinal tract support.

One of the best things about this supplement is that it is made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then carefully manufactured and tested to verify potency and purity. This ensures that you are getting a high-quality product that is safe and effective.

While this supplement may not be suitable for those with sensitivities to certain ingredients, and some users may not see noticeable results, we believe that the benefits outweigh the potential drawbacks. Overall, if you are looking for a high-quality L-Glutamine supplement to support your overall health, we highly recommend the Pure Encapsulations L-Glutamine Supplement.

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If you are looking for a reliable L-Glutamine supplement that promotes gastrointestinal and immune system health, then you should definitely consider Thorne L-Glutamine.

Pros

  • Helps with post-exercise muscle cell repair
  • Benefits gastrointestinal health and helps maintain gut permeability and optimal gut barrier function
  • Helps restore plasma glutamine levels depleted after periods of physical stress, such as prolonged exhaustive exercise

Cons

  • The capsules might be too large for some people to swallow
  • Might take some time to see results
  • The price might be a bit higher compared to other L-Glutamine supplements on the market

We have been using Thorne L-Glutamine for some time now and we have noticed a significant improvement in our gut health and immune system function. The supplement is easy to take and we have not experienced any negative side effects.

One of the things we love about Thorne L-Glutamine is that it is trusted by 100+ pro teams. Thorne is also the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is a proud partner of U.S. Olympic Teams.

Overall, if you are looking for a high-quality L-Glutamine supplement that is backed by science and trusted by professionals, then Thorne L-Glutamine is definitely worth considering.

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If you're looking for a high-quality L-Glutamine supplement, Double Wood L-Glutamine Capsules may be the right choice for you.

Pros

  • Supports gut health and exercise endurance
  • Vegan and keto-friendly
  • No fillers, manufactured in the USA, non-GMO, and gluten-free

Cons

  • Capsules are smaller than some other brands
  • May take a few weeks to see results
  • May not be suitable for those with certain dietary restrictions

We've been using Double Wood L-Glutamine Capsules for a few weeks now, and we've noticed a significant improvement in our gut health and exercise endurance. The capsules are vegan and keto-friendly, which is a huge plus for us. We also appreciate that there are no fillers, and the product is manufactured in the USA, non-GMO, and gluten-free.

One downside is that the capsules are smaller than some other brands, which may make them difficult to swallow for some people. It may also take a few weeks to see results, so it's important to be patient. Finally, the product may not be suitable for those with certain dietary restrictions, so be sure to check the ingredients carefully.

Overall, we highly recommend Double Wood L-Glutamine Capsules for anyone looking to support their gut health and exercise endurance.

Buying Guide

When it comes to choosing the best L-glutamine supplement, there are a few key factors to consider. Here are some things to keep in mind when making your selection:

Purity and Quality

The first thing to look for when choosing an L-glutamine supplement is purity and quality. You want to make sure that the supplement is free from contaminants and that it contains the amount of L-glutamine that it claims to have. Look for supplements that have been tested by third-party labs to ensure their purity and quality.

Form and Dosage

L-glutamine supplements come in a variety of forms, including powders, capsules, and liquids. Consider which form will be easiest for you to take and which dosage will work best for your needs. Some supplements may require multiple doses per day, while others may only need to be taken once.

Additional Ingredients

Some L-glutamine supplements may contain additional ingredients, such as other amino acids or vitamins. Consider whether these additional ingredients will be beneficial for your health goals or if you would prefer a supplement that is L-glutamine only.

Price

Price is always a consideration when purchasing supplements. While you don't want to sacrifice quality for a lower price, you also don't want to overspend on a supplement that may not be worth the cost. Compare prices and ingredients to find the best value for your money.

Brand Reputation

Finally, consider the reputation of the brand you are purchasing from. Look for a brand that is well-known and trusted in the supplement industry. Read reviews from other customers to see their experiences with the brand and the product.

By considering these factors, you can choose the best L-glutamine supplement for your needs and ensure that you are getting a high-quality product that will support your health and fitness goals.

Frequently Asked Questions

What is the best form of L-glutamine to take?

The best form of L-glutamine to take is a matter of personal preference. L-glutamine is available in powder, capsule, and tablet form. However, the powder form is the most popular and is often considered the best because it is absorbed faster by the body.

Is it better to take L-glutamine powder or capsules?

Again, this is a matter of personal preference. L-glutamine powder is absorbed faster by the body, but capsules are more convenient and easier to take on-the-go. Ultimately, it depends on your lifestyle and preferences.

Is it okay to take L-glutamine everyday?

Yes, it is generally safe to take L-glutamine everyday. However, it is important to follow the recommended dosage on the product label and consult with a healthcare professional if you have any concerns.

Is it better to take glutamine or L-glutamine?

Glutamine and L-glutamine are essentially the same thing. L-glutamine is the more common form of glutamine and is the form that is naturally produced by the body.

What are the benefits of taking L-glutamine?

L-glutamine has many potential benefits, including supporting muscle growth and recovery, improving gut health, boosting the immune system, and reducing inflammation.

What are the side effects of taking L-glutamine?

L-glutamine is generally safe for most people when taken in recommended doses. However, some people may experience mild side effects such as stomach upset, nausea, or headaches. If you experience any severe side effects, stop taking L-glutamine and consult with a healthcare professional.

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