Top 9 Best L-Glutamine Supplements | Buoy (2024)

Written by Andrew Le, MD

UpdatedOctober 23, 2024

L-Glutamine is an amino acid which is made naturally in the human body. It plays several critical roles together with synthesis of muscles, immune-boosting and even in the wellbeing of the gut. However, in certain cases the body does not produce sufficient L-Glutamine resulting in particular deficiencies. This is where L-Glutamine supplements come in, and here’s how they are useful in a detailed comprehensive manner.

L-Glutamine is one of the most consumed nutrients by athletes, bodybuilders, and fitness people. Such supplements come in the form of powders, capsules, and tablets among others.

We have spent a great deal of time in searching for the top L-Glutamine supplements. Below, we will present the list of the best L-Glutamine supplements and include all the information you would need in order to make the right choice.

Top 3 Best L-Glutamine Supplements

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

L-Glutamine supplementscontribute to the recovery of muscles, support immunity system, has a positive impact on the gut. Depending on whether you are a performing athlete or a common individuals in need of supplement to boost the body’s general health, then you will benefit from the following top reviewed L-Glutamine supplements.

Nutricost L-Glutamine 800mg, 180 Capsules

Editor's Choice

Nutricost L-Glutamine 800mg, 180 Capsules

Nutricost L-Glutamine 800mg changed our digestive system for the better in the shortest time possible. Plethora servings and no artificial additives makes it easy to use and is not as often requiring a reorder. It is a budget-friendly and efficient treatment.

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It is a Non-GMO and gluten-free dietary supplement that can help you having a healthy gastrointestinal tract and muscle recovery; thus, you should get Nutricost L-Glutamine 800mg – 180 Capsules.

Pros

  • Each capsule has 800mg of L-Glutamine, and that is much higher dosage than in most of the similar supplements available.
  • They come in large bottles and the particular bottle has 180 servings of the supplement which make it good value for the money.
  • The supplement is produced in a GMP compliant, FDA approved facility meaning that it is both safe and effective.

Cons

  • Some users complained of stomach discomfort after taking the supplement.
  • Not recommended for vegetarians or vegans, as it contains gelatin.

We have been using the Nutricost L-Glutamine 800mg, 180 Capsules for several weeks now and have realized some big change in the health of my stomach. The supplement is convenient to administer and I like the fact that it does not contain artificial colours, flavours, and preservatives. It also concerns the number of servings that we can get in the bottle, which is rather large, and that saves us from ordering it too often.

The capsule are relatively large: if you have issues with swallowing pills, you will have to look for a different supplement. However, there are some things people have complained of concerning the supplementation where some of them have suffered some stomach aches when they had to take the supplement.

In our opinion, Nutricost L-Glutamine 800mg, 180 Capsules is one of the best L-Glutamine supplement products out there. It is relatively cheap, has no side effects and is easy to administer and we endorse it.

Nutricost L-Glutamine Powder

Nutricost L-Glutamine Powder

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Nutricost L-Glutamine Powder comes highly endorsed for those who want to enhance their digestive health, immune function, loss weight, and support their brain.

Pros

  • Comes with 5000mg of L-Glutamine Powder per serving approximately 100 servings.
  • Made in a GMP compliant, FDA registered pharmaceutical manufacturing company
  • Vegetarian-friendly and free from gluten, soy, and GMO

Cons

  • Unflavored, which may not be appealing to some
  • Takes a couple of uses for the body to adjust

Nutricost L-Glutamine Powder has been in our list of supplements for a couple of months and we wouldn’t want it out of our dietary regime. This one contains no flavors; It is a pure and highly effective supplement for muscle recovery and strengthening the immune system. That the product is free from gluten, soy and GMO, and also certified vegetarian point to the fact that it is a healthy product.

It offers 5000mg of L-Glutamine Powder per serving as opposed to what its rivals present.This product also has the advantage of coming in a pack of 1. Bottle, comes in a 1 pound pack, yields 100 portions.

Even though some individuals may find it disadvantageous that the described feature of the product does not have any specific taste, we would like to emphasize that such an advantage is actually an advantage because the product can be blended with other beers or preparations.

If you’re searching for a top of the line L-glutamine supplement for muscle recovery, the Sports Research L-Glutamine is one of the best.

Pros:

  • They are beneficial in the building up of muscles and the repair of the muscle tissue.
  • Boosts immune system function
  • It helps in alleviating and preventing muscular soreness as well as muscular fatigue
  • Enhances endurance and performance
  • Made with pharmaceutical-grade ingredients

Cons:

  • Some users complained of mild digestive discomfort initially
  • Not recommended to those with certain medical conditions or allergies

Sports Research L-Glutamine is one of the most recommended supplements especially amongst the athletes. Crammed with vitamins and minerals, there are many positive sides for those who need a boost in performance and a shorter time to recovery. It is also important in muscle building and repair and thus a must be incorporated in anyone’s fitness regime. It can also strengthen the immune system, decrease the duration of muscle soreness and increase stamina; the latter enables learner actors specifically to train harder.

Another point worthy of noting is that L-Glutamine from Sports Research does not contain impurities and is of high quality. It is composed of pharmaceutical grade ingredients that are tested to extreme precision in order to meet the highest quality. Such a commitment to quality helps user to get the product that is safe for use and one that offers the right results.

In addition, its powder form also enables it to dissolve easily into any drink and can be easily taken before or after a rigorous workout.Sports Research L-Glutamine is one of the best products whether one is a professional athlete or just beginning a weight training program.

Double Wood L-Glutamine Capsules

Double Wood L-Glutamine Capsules

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If you want a good L-Glutamine supplement, then perhaps the Double Wood L-Glutamine Capsules will suit you best.

Pros

  • It helps to support the gut health and exercise endurance.
  • Vegan and keto-friendly
  • The capsules are no fillers, made in the USA, non-GMO, and gluten-free.

Cons

  • May take a few weeks to see results
  • Not recommended to individuals with certain dietary restrictions

We have been taking Double Wood L-Glutamine Capsules for a couple of weeks now, and our stomach health and interminable physical rehearsals have improved greatly. It is also important to note that the capsules are vegan and keto so those are checked off in our list. We also like the fact that there are no additives We also acknowledge that the product is made in USA, Non-GMO and gluten free.

These capsules, however,may require a few weeks for one to start observing some of the changes, therefore it calls for patience. Also, the product may not be very appropriate for people with strict dietary requirements; thus, it is wise to consider ingredients used in the product.

NOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules 120 Count (Pack of 1)

NOW Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules 120 Count (Pack of 1)

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If you seek a good L-glutamine supplement now, the NOW Supplements L-Glutamine 500mg is one of the best products to try.

Pros

  • Critical for maintaining healthy nitrogen balance
  • Supports immune function
  • Organic, Halal, GMO-free, kosher, lactose-free, cholesterol-free, Celiac friendly, peanut/tree nut allergic, soy allergic, vegan/vegetarian

Cons

  • Capsules may be too large for some users
  • Some users may not see noticeable effects

As for NOW Supplements L-Glutamine 500mg we have been taking it for somewhat longer time and we have noted some improvements. Supplement is good because it does not let our nitrogen level goes bad, so all is good.

The capsules tend to be large and may therefore be unsuitable for some individuals, especially with regard to swallowing them. Further, we recommend you being present during the delivery process in order to avoid the products being exposed to heat or sunlight that reduces the quality of the pack.

In conclusion, NOW Supplements L-Glutamine 500mg is reliable L-glutamine supplement that can be recommended to anyone seeking to buy the supplement. It is an ideal place for people, who have to adhere to certain diets.

Optimum Nutrition Glutamine 1000mg, 120 Capsules

Optimum Nutrition Glutamine 1000mg, 120 Capsules

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If you want to purchase a top L-glutamine dietary supplement to recover muscles then you can order Optimum Nutrition – Glutamine 1000mg, 120 Capsules.

Pros

  • Contains 5000 milligrams of L-glutamine per two capsules
  • Amino acid occurring in the largest quantity in the body
  • It is involved in the build-up of muscles proteins

Cons

  • May melt or get damaged if exposed to heat or sunlight
  • Not recommended to individuals with certain medical conditions

For a long time now, we have been using Optimum Nutrition Glutamine 1000mg, 120 Capsules and we have not been dissatisfied. The capsules are ether to swallow and we liked the fact that there are no other additive in the capsules and it is pure L-glutamine.

The supplement has 1000 milligrams of L-glutamine in two capsules, which enables one to achieve the daily required amount. L-glutamine should also be mentioned as the most popular amino acid used in the human body and a significant component of muscle proteins formation.

BULKSUPPLEMENTS.COM L-Glutamine Powder

BULKSUPPLEMENTS.COM L-Glutamine Powder

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If you in a search of the fastest way to gain back muscle mass as well as improve your overall well-being, then BULKSUPPLEMENTS.

Pros

  • Aids in regaining the body tissue strength and body functioning quicker and more actively.
  • Supports optimal gut health
  • Bolsters your immune system and natural defenses

Cons

  • Needs a scoop that is not included
  • Unflavored taste may not be for everyone

We've been using BULKSUPPLEMENTS. L Glutamine Powder of COM for some time now and since then recover has been quicker while gut health has been enhanced. Moreover, their is more energy and better health resulting from the immune system according to the recommendations.

The supplement has no specific taste people may or may not enjoy, but it is free from gluten, soy, dairy, and added sugar.Although, I would like to point out that a scoop will be required to be bought separately.

Overall, BULKSUPPLEMENTS is a trustworthy and reliable online store.SUM L-Glutamine Powder for the person interested in raising his or her fitness and health stakes in order to achieve even greater results.

Pure Encapsulations L-Glutamine Supplement

Pure Encapsulations L-Glutamine Supplement

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We recommend Pure Encapsulations brand for those who need to boost their immunity and digestive system and for those who want to improve their metabolism and muscle mass.

Pros

  • Supports gastrointestinal healthAssists in maintaining the muscles’ massMade with premium ingredients

Cons

  • Some users may not see noticeable results
  • It is a bit expensive

Pure Encapsulations L-Glutamine supplement can be a perfect option for you. The supplement is aimed to provide the needed nonishment to the lining and normal functioning of the GIT besides maintaining and building up lean body muscles especially where the metabolic process is most intense. Further, L-Glutamine is one of the special amino acids that act as the fuel for the body tissues and support the gut.

This supplement consists only of the high-quality ingredients and developed with the help of the nutritionists and other specialists, as well as produced and checked following the strict instructions to ensure the consumers they get only the effective and safe product. It serves to guarantee that you are receiving a top notch product that is not only safe, but is also effective.

Thorne L-Glutamine - Amino Acid Supplement

Thorne L-Glutamine - Amino Acid Supplement

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If you are in the market for a good and quality L-Glutamine, which helps in the health of the gastrointestinal and immune system then Thorne L-Glutamine will not disappoint.

Pros

  • Assists with repairing of muscle cells after you have had a work out.
  • Is good for the gut, including both the gastrointestinal functionality and integrity of the gastrointestinal barrier.
  • Assists to replenish plasma glutamine which is reduced after endurance activities like prolonged exhaustive exercise.

Cons

  • The capsules might be too large to swallow
  • Might take some time to see results

We have been administering Thorne L-Glutamine for quite some time now it has greatly helped us in boosting or gut and our immune system. Consuming the supplement is very convenient and we have not registered any form of side effect throughout the period of this study.

Something that makes Thorne L-Glutamine very special to us is the fact that it is used and relied on by over 100 professional teams. Moreover, Thorne is the only supplement manufacturing company to share a link with Mayo Clinic and create supplements and wellness products based on the clinic’s research and information. Thorne is an official sponsor of U. S. Olympic Teams.

Overall, if you want to get the L-Glutamine supplement of the highest quality, which is promoted by scientific data and is used by professionals, the considered Thorne L-Glutamine is among the best options worth focusing on.

Buying Guide

Purity and Quality

When looking for a product that supplements L-glutamine, therefore, it is imperative that you check purity and quality of the product.You also wish to ensure that the container does not contain any other unwanted ingredients or an even lesser dose of L-glutamine than listed on the container. Opt for the supplements that have been through lab testing especially for the presence of heavy metals and bacteria.

Form and Dosage

L-glutamine is found in many forms such as powders, capsules, and in liquid form. Which form will be easier for you to take as well as which dosage will be most effective for you should also be determined. While using supplements, someone might find it necessary to take it severally in a day while the other supplement might be taken once in a day.

Additional Ingredients

SomeL-glutamine supplements may have other ingredients in their formulas including other amino acids or vitamins among others. Think about whether these others additives will be good for the health and bodybuilding or if it is okay to have a supplement that is L-glutamine only.

Price

Priceis usually a determining factor when it comes to supplement consumption. When searching for a supplement, you do not want to take a product of lesser quality simply because the price is lower, however you also do not want to spend a lot of money on a supplement with little value. Instead of looking at the final price of the product look at the ratios of the ingredients used.

Frequently Asked Questions

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

The best L-glutamine to take is one which the user feels comfortable consuming. L-glutamine comes as a powder, capsules and tablets. But the powder form is the most preferred for it is regarded as the best since it is assimilated faster in the body.

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

This is more of a matter of individual decision making. L-glutamine powder is said to be assimilated in the body faster than the capsules yet the latter are easier to use and can be carried around more easily. It all boils down to the choice of lifestyle and necessities that one would prefer to spend on.

Is it okay to take L-glutamine everyday?

Yes, L-glutamine is generally considered as safe to take every day and is widely used as a weight loss supplement. However it must be underlined that one must take the vitamins in the dosages stated on the label and consult a doctor if in doubt.

Is it better to take glutamine or L-glutamine?

Glutamine and L-glutamine are, in fact, the same thing as L is simply a prefix for the latinization of substances. L-glutamine is the free form of glutamine and this is the form of glutamine that is produced naturally within the human body.

What are the benefits of taking L-glutamine?

L-glutamine is a compound that is most associated with many advantages, which includes muscle mass building and repair, gut health, immunity boost, as well as anti-inflammatory properties.

What are the side effects of taking L-glutamine?

L-glutamine is not toxic for the most people when they use it in the recommended quantities. Nonetheless, they are likely to have side effects like feeling sick, could suffer from upset stomach or stinging feeling in the head. In case you take any serious side effects, do not take L-glutamine anymore and recommend a doctor.

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Top 9 Best L-Glutamine Supplements | Buoy (2024)
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