Top 10 Glutamine Supplements on the Market – 2019’s Best Sellers

This is our official list of the best selling glutamine supplements on the market right now.

These 10 l-glutamine brands have been ranked because they dominate the e-commerce sales charts, fitness bloggers love them and they have the highest user reviews online.

10 Best L-Glutamine Products Compared

Heads up, there are affiliate links in this article, so if you buy something, we get a cut of the sale.

1. Transparent Labs CoreSeries BCAA Glutamine


Transparent Labs CoreSeries BCAA Glutamine is one of the best glutamine supplements on the market today. With 5g glutamine and 8g of BCAAs per serving, this powerful product combines proven products to produce the ultimate 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
  • 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 which 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 for the great glutamine supplement, this may be it! By combining glutamine and BCAAs, Transparent Labs has really produced one of the best blends out there. CoreSeries BCAA Glutamine provides excellent value for money, top quality ingredients, and a very simple yet effective formula.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy CoreSeries BCAA Glutamine

2. Optimum Nutrition Glutamine Capsules


Optimum Nutrition Glutamine Capsules are high quality, simple and effective glutamine supplements made by one of the best-known names in the business. With 1g of L-Glutamine in each capsule, these pills provide 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.


  • 1g glutamine per serving
  • In capsules for easy use
  • No mixing or blending required
  • High quality ingredients
  • Excellent value for money
  • Made by Optimum Nutrition

What’s in it: One serving contains:

  • 1g L-Glutamine. In capsule form for ease of use. Glutamine is a key amino acid.

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: These are one the best glutamine pills out there and provide the most convenient way of taking this helpful supplement. No need to blend a shake or mix a powder with water – simply swallow a capsule or two and you’re good to go! Plus, ON is one of the best names in the business, having proved their commitment to producing high quality products time and time again.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy ON Glutamine Capsules

3. BSN Glutamine DNA


BSN Glutamine DNA is a sophisticated and highly effective supplement made by BSN. Using 100% micronized glutamine, this advanced supplement absorbs and digests easily, making the most of each dose to deliver the maximum benefits. And with a full 5g of glutamine in every dose, this product has everything you need to recover properly. Plus, it’s unflavored, so it’s easy to mix into any shake or other drink.


  • 5g glutamine per serving
  • Unflavored for easy mixing/stacking
  • Micronized for better digestion
  • Great value
  • Easy to add to your post-workout protein shake (unflavored)
  • Good value for money

What’s in it: One serving contains:

  • 5g glutamine, micronized for better digestion. This comes in the form of an unflavored powder, so it’s easy to mix into a protein shake, water, or any other beverage.

Who makes it: This product is made by BSN, otherwise known as Bio-Engineered Supplements and Nutrition. This popular and award-winning company has made a name for itself in the industry by consistently producing high quality, highly effective fitness supplements. From pre-workouts to protein, BSN has it all.

Bottom line: This is a strong glutamine supplement and a great value for the money. The fact that it’s micronized is great news, as this allows the amino acid to be more fully digested in your system, leading to greater efficacy. We also like that it’s unflavored, making it easy to mix into whatever beverage you desire. And, coming from a name like BSN, you can have faith in this product!

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy BSN Glutamine DNA

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 rose 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.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy MusclePharm Glutamine

5. Universal Nutrition Glutamine Optimum Cellular Recovery


Universal Nutrition OCR is a powerful glutamine supplement 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.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy Universal Nutrition Glutamine



EVL Nutrition GLU+ is a potent supplement containing 5g glutamine per serving, with added vitamins and antioxidants for additional support. This advanced blend is designed to help you meet your glutamine needs.


  • 5g glutamine per serving
  • Added antioxidants & vitamins
  • Made by a great company
  • Good value for money

What’s in it: One serving contains:

  • 5g L-Glutamine
  • Vitamins & antioxidants, including vitamin A, C, E and B6. These ingredients are added to enhance the efficacy of the supplement and provide support to your body.

Who makes it: This product is made by EVL Nutrition, a relative newcomer to the supplement industry. Founded just a few years ago in 2013, EVL has exploded in popularity, going on to win several industry awards and building a huge following of fans. Otherwise known as EVLUTION Nutrition, this company has nowhere to go but up!

Bottom line: This is a powerful glutamine supplement at a reasonable price, that comes from a great company! The addition of vitamins to this blend is a unique attribute, although most people get enough of these nutrients from their daily diets. The only real downside is that it’s only available in one flavor (blue raspberry, last time we checked).

7. Dymatize Micronized Glutamine


Dymatize Micronized Glutamine is a simple but highly effective supplement. With 4.5g of L-Glutamine in each serving, and with a micronized formula for easy absorption and digestion, this product gets to work fast and produces results. Plus, it comes from a highly reputable and well known brand!


  • 5g glutamine in each serving
  • Micronized for better absorption
  • Simple and effective
  • Unflavored for easy mixing/stacking
  • Absorbs fast
  • Good value for money

What’s in it: One serving contains:

  • 5g L-Glutamine

Who makes it: This product is made by Dymatize Nutrition, a large and well established supplement manufacturer. Founded in 1994, Dymatize now has more than two decades of experience in bringing top quality products to market. Over the years, they’ve developed a wide range of products, and have built up a loyal following of customers and fans – and for good reason!

Bottom line: Dymatize offers a good product, as usual. The fact that this supplement is micronized a big plus, as that allows it to be absorbed more rapidly and completely. The only downside is that there is a bit less active ingredient per serving compared to the average, but it’s not a huge difference.

8. 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 glutamine product. With that being said, it is a bit on the expensive side, so you might consider some of our top recommendations instead.

9. 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.

10. AllMax Nutrition Micronized Glutamine


AllMax Nutrition Micronized Glutamine is a simple and effective glutamine supplement. Offering 5g of free-form L-Glutamine in each serving. Also of note, the glutamine in this supplement has been micronized for easier absorption.


  • 5g glutamine per serving
  • Micronized for easier digestion
  • Pharmaceutical grade ingredients
  • No other ingredients: just pure glutamine

What’s in it: One serving contains:

  • 5g micronized glutamine. Micronized for easier digestion.

Who makes it: This product is made by AllMax Nutrition, a large supplement company focused on meeting the needs of the strength training community. With a wide range of products designed to help bodybuilders and athletes perform at their best, AllMax Nutrition provides great products at affordable prices.

Bottom line: This is a simple and good product. Its formula contains only one ingredient: pure micronized glutamine. If you’re looking for a basic, barebones product this is a good option. With that being said, it’s a bit expensive for what it is.

What Are Glutamine Supplements?

They 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).

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 we’re here to talk about today.

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.

Benefits of Glutamine

Some potential glutamine uses 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.

Side Effects

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 To 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.

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 workout, 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 pre-workouts, post-workouts, 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.

What to Look for in a Good Glutamine Product

In order to find the most effective 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 glutamine 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!

Final Thoughts

Now that you have learned some more details about glutamine, it’s time to decide and choose your supplement! Any product on this list would be a great choice – it’s only a matter of finding the right one for your needs & budget.

If you have any questions, please let us know!

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Austin Meadows

Written by Austin Meadows

Austin Meadows is an independent writer and consultant specializing in health and wellness topics. With more than 7 years of experience writing in the natural health industry, Austin strives to deliver accurate, concise and research based information to his readers. You can connect with him on LinkedIn.