Amino Acids L-Glutamine

Top 10 Glutamine Supplements in 2022

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In order to help you find a good product, we’ve researched & compared the best glutamine supplements on the market right now.

Best Glutamine Products Compared

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1. Transparent Labs CoreSeries BCAA Glutamine

Transparent Labs Coreseries Bcaa Glutamine

With 5g glutamine and 8g of BCAAs per serving, this powerful product combines proven products to produce and excellent glutamine supplement. And, like every Transparent Labs product, this supplement is completely free of dyes, fillers, and harmful additives. It’s a very clean, potent and effective product.


  • 5g glutamine per serving
  • 8g BCAAs in 2:1:1 ratio
  • 30 Servings per container
  • 5 Different flavors
  • Free of dyes, additives, and fillers
  • Excellent value for money
  • Available in Green Apple and Blue Raz flavor

What’s in it: One serving contains:

  • 5g L-Glutamine, which helps aid in post-workout recovery.
  • 8g BCAA (2:1:1 ratio). The three branched-chain amino acids are L-Leucine, L-Valine, and L-Isoleucine. These three BCAAs work together to offer powerful properties.
  • 1000mg coconut water powder, which is a natural source of electrolytes that can help to rehydrate you.

Who makes it: This product is made by Transparent Labs, one of the best supplement manufacturers in the industry. Their name comes from their desire to be completely transparent about their products – offering detailed and complete ingredient lists, refusing to use fillers, dyes and other junk, and ensuring the utmost quality possible. Overall, Transparent Labs is one of our favorite sports supplement brands – their product quality, value for money and customer service are unrivaled.

Bottom line: If you’re looking to start supplementing glutamine, this is a good product to consider. By combining glutamine and BCAAs, Transparent Labs has really produced one of the best blends out there. It provides excellent value for your money, top-quality ingredients, and a very simple yet effective formula.

Where to Get It

2. NOW Sports L-Glutamine

Now Sports L Glutamine Powder

NOW Sports L-Glutamine powder contains only 1 ingredient: pure, free-form L-glutamine. This flavorless powder is halal, kosher, vegan and gluten-free, so it’s suitable for everyone. It packs 5g of L-glutamine into a one rounded teaspoon, which can easily be mixed into juice or shakes.


  • 5g glutamine per serving
  • 100% pure L-glutamine
  • Flavorless
  • Great-value

What’s in it: One serving contains:

  • 5g L-Glutamine, to support recovery after intense workouts and provide fuel for the immune system.

Who makes it: NOW Sports L-Glutamine powder is made by NOW Sports – a company that offers high-quality, unadulterated, natural products. All NOW Sports supplements are certified by Informed-Sport, a global quality assurance program, so you can be confident that anything you buy is safe and effective.

Bottom line: If you’re looking for a pure, effective, great-value glutamine supplement, then NOW Sports L-Glutamine Powder is the product for you. Just one teaspoon of this powder packs in 5g of L-Glutamine, to help you recover from your last workout fast, ready for your next one.

Where to Get It

3. Optimum Nutrition Glutamine

Optimum Nutrition Glutamine Powder

Optimum Nutrition Glutamine is a high quality, simple and effective glutamine supplement made by one of the best-known names in the business. With 5g of L-Glutamine in each serving, this product provides a very simple and convenient way to get your daily dose of this helpful amino acid. Plus, the high-quality ingredients and top-notch efficacy make this product one of our top recommendations.


  • 5g glutamine per serving
  • High-quality ingredients
  • Excellent value for money
  • Made by Optimum Nutrition

What’s in it: One serving contains:

  • 5g L-Glutamine in powdered form

Who makes it: This product is made by Optimum Nutrition, one of the biggest and best companies in the industry. Having been in business since 1987, ON has decades of industry experience. They’ve mastered the techniques required to produce the highest quality fitness supplements possible. In recent years, their products have won several awards, and their “Gold Standard” product line truly sets the standard for quality and consistency in an industry crowded with mediocre products.

Bottom line: ON is one of the best names in the business, having proved their commitment to producing high-quality products time and time again. With that in mind, you can rest assured that this is a quality glutamine product.

Where to Get It

4. MusclePharm Glutamine


MusclePharm Glutamine is an advanced supplement containing a blend of 3 different types of glutamine. Designed for maximum efficacy and efficiency, this product is easily absorbed and provides an array of benefits. By using a unique blend of ingredients, MusclePharm has created a supplement that provides all the benefits you’d expect, plus the added benefits of improved absorption, and more.


  • 5g glutamine per serving
  • Uses a blend of L-Glutamine, glutamine peptides, and Alanyl-L-Glutamine
  • Unflavored for flexibility of use
  • Good value for money
  • Made by a trustworthy company

What’s in it: One serving contains:

  • 5g glutamine blend, consisting of L-Glutamine, glutamine peptides, and Alanyl-L-Glutamine. A blend is used for improved absorption, although it should be noted that these unique forms of the amino acid have not been as widely studied as the standard.

Who makes it: This product is made by MusclePharm, one of the largest and best companies in the fitness supplement industry. This relatively new company, founded in 2008, has quickly risen through the ranks of the industry to become a recognized leader. Today, having won multiple awards and earned the respect of the fitness community, MusclePharm products are now available worldwide.

Bottom line: This is a great product at a great price – and from a great company. Its unique blend makes it a must-try for anyone seeking to try out the latest cutting-edge products. And it comes from MusclePharm, one of our favorite supplement manufacturers.

Where to Get It

5. Kaged Muscle Glutamine Powder

Kaged Muscle Glutamine Powder

Kaged Muscle Glutamine Powder is designed to be consumed 3 times daily, mixed into your favorite juice or shake. It is made through a process of fermentation – this means that is it not synthetic, unlike some other products on the market! Kaged Muscle Glutamine Powder contains just one ingredient – superior-quality vegan, GMO-free, fermented L-glutamine.


  • 5g glutamine per serving
  • 100% pure L-glutamine
  • Superior-quality product made through fermentation
  • Vegan
  • Kosher
  • GMO-free

What’s in it: One serving contains:

  • 5g pure fermented L-Glutamine powder, to aid recovery and support muscle growth during sustained high-intensity exercise.

Who makes it: Kaged Muscle Glutamine Powder is made by Kaged Muscle, a premium sports nutrition brand that aims to provide the highest quality products, made from the most potent raw materials. The team at Kaged Muscle also provides excellent customer service and their products are available throughout the US.

Bottom line: Kaged Muscle Glutamine Powder is a superior-quality product made from the highest-quality raw materials. This powder contains 5g of pure L-Glutamine per serving, to help support your body during intense athletic training.

Where to Get It

6. Body Fortress 100% Pure Glutamine Powder

Body Fortress 100 Pure Glutamine Powder

Drinking a shake with Body Fortress 100% Pure Glutamine Powder before and after workouts can help to maintain glutamine levels and aid recovery. Each scoop of this powder packs in 4.5g of pure L-glutamine and contains only 5 calories. This product does not contain any nasty additives – it is made of one sole ingredient – high-quality L-Glutamine. This is also one of the best-value products on the market, making it a great option for any level of athlete.


  • 5g glutamine per serving
  • 100% pure L-glutamine
  • 5 calories per serving
  • No added flavorings or sweeteners
  • Great value

What’s in it: One serving contains:

  • 5g pure L-Glutamine, to help your muscles to recover after an intense session.

Who makes it: Body Fortress 100% L-Glutamine Powder is made by Body Fortress, a US company that focuses on providing high-quality protein supplements at accessible prices. Body Fortress products are available throughout the US and are manufactured in accordance with FDA standards.

Bottom line: Body Fortress 100% L-Glutamine Powder provides you with 4.5g of pure, unsweetened, unadulterated glutamine at one of the lowest prices on the market. So, if you’re looking to speed up recovery and see bigger gains, without breaking the bank, then this could be the product for you.

Where to Get It

7. Bulksupplements L-Glutamine Powder

Bulksupplements L Glutamine Powder

Bulksupplements L-Glutamine Powder is made from 100% pure, non-GMO L-Glutamine. This powder packs 1000mg of L-Glutamine into each serving, to help you to recover faster between workouts. This product is flavorless and can be easily combined with your favorite juice or shake. It can be taken at any time of day but is particularly effective post-workout.


  • Bulk glutamine powder
  • 100% pure non-GMO L-glutamine
  • Great value
  • Sugar-free
  • Dairy-free
  • Gluten-free

What’s in it: One serving contains:

  • 1000mg pure non-GMO L-Glutamine powder, to replenish the amino acids lost during intense exercise and help you to recover faster.

Who makes it: Bulksupplements L-Glutamine Powder is made by Bulksupplements, a US company that produces over 400 pure nutritional supplement ingredients. All Bulksupplements product is rigorously tested in-house, so you can be sure that anything you buy from them is safe to use, high-quality and effective.

Bottom line: Bulksupplements L-Glutamine Powder is a convenient, great-value way to increase your glutamine intake and help you to recover faster between intense workouts.

Where to Get It

8. BPI Sports Best Glutamine

Bpi Sports Best Glutamine

BPI Sports Best Glutamine is a high-quality supplement made by a very well known fitness supplement manufacturer. With a blend of several types of glutamine, this advanced formula absorbs quickly and can provide impressive results. And coming from a known company like BPI Sports, you can trust that this is a quality product.


  • 5g glutamine per serving
  • Uses a blend of different types of glutamine
  • Added vitamin C
  • Digests quickly
  • Available in several flavors

What’s in it: One serving contains:

  • 5g glutamine (proprietary blend), consisting of L-Glutamine, Glutamine Alpha-Ketoglutarate, Glutamic Acid, N-Acetyl-L-Glutamine, and more. This blend is designed to provide glutamine benefits while also enhancing absorption and digestion.

Who makes it: This product is made by BPI Sports, a large scale manufacturer of fitness supplements. Founded in 2010 by a team of industry experts and fitness enthusiasts, BPI has quickly grown into a dominant force in the supplement industry. They currently offer an impressive lineup of more than 10 different highly effective sports supplements and continue to release additional products.

Bottom line: Overall, this is a good product that offers a balanced blend of several types of this key nutrient. And it comes from BPI, a very well respected company. The only real downside is that it’s a bit expensive and that it’s flavored which might make it more difficult to mix into other shakes and drinks.

Where to Get It

9. Universal Nutrition Glutamine Optimum Cellular Recovery

Universal Nutrition Glutamine Optimum Cellular Recovery

Universal Nutrition Glutamine OCR is made by one of the biggest brands in the supplement universe. Containing 5g of pure glutamine and nothing else, this effective and affordable supplement is a great choice. It’s also a highly affordable option, plus it’s unflavored so you can mix it with whatever you’d like.


  • 5g glutamine per serving
  • 100% pure
  • Very affordable
  • Great value for money
  • Unflavored for easy stacking

What’s in it: One serving contains:

  • 5g L-glutamine

Who makes it: This product is made by Universal Nutrition, a long-standing icon of the supplement industry. Founded almost 4 decades ago in 1977, Universal Nutrition has an impressive track record of bringing high quality, effective products to market.

Bottom line: This is a great option for those looking for an affordable, simple product. There are no frills or fancy ingredients in this supplement, but it does exactly what it’s supposed to. On a per-serving basis, this is one of the cheapest glutamine supplements out there, but it’s still very high quality.

Where to Get It

10. Betancourt Nutrition Glutamine Plus

Betancourt Nutrition Glutamine Plus

Betancourt Nutrition Glutamine Plus is a potent glutamine supplement made by a reputable company. Containing a solid dose of key amino acid glutamine in every serving. Plus, added L-Alanine helps this supplement be even more effective.


  • 3g glutamine per serving
  • Uses a unique blend
  • Added L-Alanine (helps with hydration & recovery)
  • Available in two tasty flavors

What’s in it: One serving contains:

  • 3g proprietary blend, consisting of L-Glutamine, L-Alanine, L-Alanyl-L-Glutamine, Glutamine peptides and more. This is a powerful blend of amino acids.

Who makes it: This supplement is made by Betancourt Nutrition, a Florida-based supplement manufacturer. Betancourt aims to be a one-stop-shop for all your health & fitness needs, providing cutting-edge supplements, health products, and more.

Bottom line: The blend of ingredients it uses is designed for maximum efficiency, and we believe this is a good choice for anyone looking for a good source of glutamine. With that being said, it is a bit on the expensive side, so you might consider some of our other recommendations instead.

Where to Get It

Frequently Asked Questions About Glutamine Supplements

What Are Glutamine Supplements?

Glutamine supplements are products containing the amino acid: L-Glutamine.

Glutamine is the most common amino acid found in your muscle tissues, and it plays a key role in the health of your muscles.

All amino acids, including glutamine, are considered “the building blocks for proteins”.

Simply put, amino acids are compounds that combine to form proteins, and proteins are what allows our bodies to build and maintain muscle (1). This is why you’ll find amino acids as an added ingredient in many of the best protein powders and especially the best plant based protein powders, since plant protein has fewer than dairy based.

And since L-Glutamine is the most prevalent amino acid found in muscle tissue (over 60% of skeletal muscle is made up of L-Glutamine), the relationship between glutamine and healthy muscles has been the subject of a many study.

The amino acid plays a role in protein synthesis, the process your body goes through in order to effectively use protein (2). It also has anti-catabolic properties.

All the many benefits of glutamine, which we will discuss in detail below, are offered by both the naturally occurring amino acid (produced naturally in your muscles), and the glutamine supplements listed above.

So, if L-Glutamine is produced naturally in the body, why do you need supplements?

Because during intense exercise, glutamine stores are burnt up, lowering your natural glutamine levels. Your levels will slowly come back to normal, but that can take several days.

By adding a glutamine supplement to your diet, you can immediately replace those lost nutrients, thereby speeding recovery and keeping your muscles happy.

What Are the Benefits of Glutamine?

Some potential glutamine uses and benefits include:


Glutamine plays an important role in the functioning of our immune systems. It serves as a fuel source for white blood cells (3), which help to ward off disease and infection.

If the body needs more glutamine than is being consumed or produced naturally, it may begin to break down muscles to access protein stores of glutamine (4, 5).

Also, it’s thought that the proper functioning of the immune system may be compromised when the body does not have access to sufficient levels of glutamine (6).

Thus, the relationship between glutamine and immune system health is closely linked.

However, most studies have looked at critically ill patients, and/or patients who have sustained serious injuries.

There is little evidence to suggest that glutamine may boost immune function in otherwise healthy individuals (7).

More research is needed.

Wound healing

Glutamine is important for immune function, but it appears to be even more key when a serious wound, burn or other trauma is sustained.

After a major injury, blood levels of glutamine tend to increase (8), potentially resulting in a depletion of glutamine stores.

For this reason, many medical professionals subscribe glutamine supplements following a serious burn or other wound (9).

Intestinal health

Glutamine also plays a role in our intestinal health. It is an energy source for many of the immune and intestinal cells that line our guts (10).

By supplying these cells with energy, glutamine helps to protect the health of your intestinal and immune systems (11). It’s therefore important for the normal maintenance and growth of intestinal cells (12).

Glutamine can also help strengthen the barrier between the inside of the intestines and the rest of the body (13).

This barrier is key because it helps prevent harmful toxins and bacteria from escaping the gut and entering the rest of the body (14).

Post-workout recovery

Some research suggests that glutamine may help to decrease muscle soreness after intense exercise (15) and may also help to improve recovery.

However, other studies have contradicted these findings (16).

More research is needed.

Exercise performance & muscle growth

Because glutamine is a building block of protein, some have speculated that it may be involved in muscle gain and/or exercise performance. However, these effects have not been shown in clinical science.

One six-week study showed no difference in the glutamine group compared to the placebo group (17). More research is needed.

Overall, glutamine supplements are well studied for several potential uses. Their applications in supporting immune and gut health are particularly well documented but their potential effects on exercise and muscle building need more research.

Who Can Benefit From Glutamine?

These groups may benefit from supplementing l-glutamine:

  • Weightlifters – the #1 group of people who should be taking glutamine are bodybuilders and weightlifters. As we mentioned before, the muscles naturally produce and store large amounts of L-Glutamine. However, during intense exercise, these stores are depleted. Supplementation can quickly and efficiently replace these levels, restoring a natural balance. Glutamine can help decrease post-workout recovery time, and ensure that your muscles have what they need to heal and rebuild.
  • Runners/endurance athletes – anyone who likes to run long distances or compete in any sort of endurance sports can benefit from glutamine. First off, glutamine products can help your muscles recover faster. Also, the amino acid has been shown to strengthen the immune system. Endurance sports temporarily weaken your immune system, so it’s important to do all you can to support your immune health if you like to run marathons or complete similar endurance activities.
  • Anyone looking to lose weight – glutamine has been shown to increase HGH secretion, which can help to burn more fat, both during exercise and rest periods (18). It may also help to reduce sugar and carb cravings in some individuals (19).
  • Men & women – both men and women can experience significant glutamine benefits. Unlike some supplements, these are not gender-specific and can be beneficial for most people.

Generally, we do not recommend taking ANY sort of supplement if you’re under 18 or without talking to your doctor first, but other than that most people can benefit from proper supplementation.

Are There Any Side Effects of Glutamine?

Most, if not all, supplements have some sort of negative side effects that you should be aware of.

Glutamine is no exception.

Side effects to look out for:

  • Gastrointestinal issues, including gas, nausea, vomiting, etc.
  • Muscle or joint pain
  • Headaches, dizziness or tired feeling
  • Mild rash or itching

This is not a complete list, as many potential side effects are possible depending on your body and the other medications/supplements you are taking.

Lastly, those with kidney disease or liver disease should generally NOT take glutamine supplements. Speak to your doctor if you’re unsure.

As with any supplement, it’s important to follow dosing instructions and never take more than recommended.

How Do I Take Glutamine?

If you’re wondering how to take glutamine or when to take glutamine supplements, this is the section for you.

First off, we always recommend following the instructions listed on the product packaging, at least when it comes to quantity. Do not exceed the daily recommended amounts unless otherwise instructed by a doctor.

As for when to take glutamine supplements, that depends on your reason for using them.

If you’re a weightlifter or athlete, a good time to take your dose is 30-60 minutes after working out, to help quickly replenish lost glutamine stores. This is a good source for more info on how much glutamine to take.

Another good time is right before bed, and right after waking up. Before bed is ideal because you increase HGH production while sleeping, and upon waking your muscles have been without nutrients for a solid 6+ hours.

If you’re wondering about glutamine dosage, most products list the serving size as around 5 grams.

Some fitness writers recommend taking 20-30g of glutamine a day. We don’t recommend you immediately begin taking such large doses, but rather work up slowly.

Also, you won’t need as much on days you don’t work out, so keep that in mind. It is not recommended to take more than 30g a day in order to stay on the safe side.

Lastly, keep in mind that L-Glutamine is commonly added to various fitness supplements, including the strongest pre-workouts, the best BCAA supplements (as seen with our #1 glutamine product), even high protein mass gainers, and more!

When calculating how much you should take, consider where else you may be getting this amino acid from.

And to clarify, we urge you to always speak with your doctor before taking any supplements featured on this website.

How Do I Pick a Good Glutamine Product?

In order to find the right glutamine supplement for you, there are several factors to consider. Let’s explore the things you should look for when choosing a product.

  • Amount of glutamine – first things first, take a close look at the label of the product you’re considering to determine the amount of glutamine in each serving. Most products will contain a 5g serving size, while some are put into capsules and have smaller sizes (1g). Obviously the amount is important, as L-Glutamine is the key ingredient in these supplements.
  • Other ingredients – what else is in the product? Many glutamine supplements will only contain L-Glutamine, but other products may contain a blend of ingredients intended to help boost the benefits of the supplement. BCAAs and other amino acids are common additions. Keep these extra ingredients in mind when making your decision. Depending on your needs and the current supplements you’re already taking, you may or may not need a product with additional ingredients.
  • Brand quality – who makes it? Are they a well known and respected company? Do some research to determine who you’re buying from and what kind of company they are!
  • Flavor – some products are flavorless, some are flavored. Pay attention to this, as it may affect your desire to actually consume the product! If in doubt, go with a flavorless version, or a version that’s prepackaged in capsules. Otherwise, read user reviews to determine how people like the taste of various products.
  • Value for money – lastly, consider the cost of the supplement. More specifically, consider the per-serving cost of each supplement you’re considering. It’s not enough to just check the price of the container itself, as the number of servings per package varies greatly. Find a good, high-quality product at a reasonable price, and you’re good to go!

How Did We Pick These Supplements?

Our core value at Top10Supps is transparency which is why we are open about how we pick the supplements that you just saw. You can read more about our supplement ranking methodology here.

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