Best L Glutamine Supplement For Muscle Growth And Recovery.


Would you consider taking a muscle building supplement that even Dwayne Johnson a.k.a “The Rock” have in common? Yes, you heard it right, even Dwayne Johnson supplement himself with 15g of L-Glutamine and Hydrolyzed whey for the faster post-workout recovery (1). 

Glutamine is one of the most abundant and important amino present in the body, it’s not just proven to be beneficial for promoting muscle recovery but also proven good for immune and gut health(3). 

L-Glutamine is also called as “Conditional” Amino acid (2), its conditional because your body can produce it on its own but under certain conditions (illness, injury, intense workout) your body’s need of Glutamine surpasses your body’s capability to produce it. 

Before we discuss the best L Glutamine supplement available in the market its important to know the difference between Glutamine(4) and L-Glutamine. 

Is L Glutamine the same as Glutamine? 

Glutamine is a conditional amino acid that is available in two different forms, L-glutamine and D-glutamine. 

Both forms of glutamines are almost identical but have little different molecular structure (5).

Researchers found, while L-Glutamine serves as a crucial building block of protein, D-Glutamine had no practical effect on protein synthesis. 

In simple words, It doesn’t matter whether you buy a Glutamine supplement or L-Glutamine supplement, reputed brands are going to provide you “L-Glutamine” only. 

You don’t really need to bother about product name being “Glutamine” or “L-Glutamine”

Best L Glutamine Supplement

Not all the supplements are created equal, there are many factors that distinguish the best from others.

Our analysis is based on personal experience, other buyers experience, Blend of ingredients, where the product is manufactured, effective serving size and many other factors. 

So we with us we are going to introduce you to the industry’s most popular and effective L glutamine supplements.   

MuscleTech Platinum Glutamine

Platinum Glutamine is 100% pure L-glutamine delivered by one of the biggest players in supplement universe. Its one of the most purified form of glutamine you can supplement yourself. 

Product highlights: 

  • 5 grams per serving
  • Purity Guaranteed with HPLC-tested L-glutamine
  • Non-stimulant formula
  • Easy dissolvability 
  • Flavorless Supplement

Company Overview: 

It’s one of the leading bodybuilding supplement brands in the USA which was established back in 1995. With the expertise of more than two decades, muscle tech has impressed us with its high quality supplements. 

Today, MuscleTech is a brand name synonymous with premium-quality, top-of-the-line products that span more than a decade, including Nitro-Tech®, Cell-Tech™, NANO VAPOR®, MASS-Tech®.  

Product review: 

Just like any other MuscleTech product, get ready to recover faster with Platinum Glutamine. It’s a tasteless and odorless protein that combines pretty well with any of your workout drinks or smoothies. 

You get a 5grams of pure L-Glutamine that has been tested with undergoes strict quality control and is third-party tested and verified for the superior quality. 


Kaged Muscle never lets you down with the quality of their supplements. Kaged Muscles has a history of using the best quality ingredients to ensures the effectiveness of the supplement. 

Kaged Muscle is providing the purest form of L-Glutamine supplement that has been derived through the fermentation process. This supplement will surely help in combating lactic acid buildup that leads to fatigue, allowing you to train harder for longer.

Supplement Highlights: 

  • 5g of L-Glutamine (Fermented)
  • Plant sourced
  • 100% pure
  • Vegan
  • Kosher
  • Certified Banned Substance Free
  • Gluten Free

About Kaged Muscle: 

Kaged Muscle is one of its kind ultra-premium sports nutrition supplement brand, this company has been co-partnered by famous bodybuilder and celebrity trainer Kris Gethin.

Kaged Muscle contains a supplement line of deep integrity, they believe in sourcing the purest form of raw material to produce the finest products. Company is very serious about the authenticity of their product and content goes through the series of lab testing to ensure the highest quality of the product. It’s definitely a company you can trust on. 

Supplement review: 

The product definitely stick honestly to what they advertise. It’s a very purifies form of L-Glutamin that doesn’t just help in retaining muscle mass but also stays gentle on gut health. We personally had a very positive experience with this Kaged Muscle Glutamine Powder, muscle seemed to recover much faster after an intense workout session. 

Best Glutamine Essential Amino Acid

It’s not just an L-Glutamine, it’s a blend of different type of glutamic acids available. What makes this product special is its wide variety of glutamine which helps in delivering all-round support. 

Every serving contains a blend of 6.5-gram glutamine with a extra punch of vitamin-c. 

Product Highlights: 

  • Serving size is 8 grams
  • 6.5 grams of proprietary glutamine blend
  • Third party tested
  • 30-days money back guarantee
  • Made in USA

About BPI: 

One of the renowned brands in the fitness industry, they have been a large-scale manufacturers of fitness nutrition. BPI has earned reputable image in market with their highest quality ingredient and sports research, company was founded in 2010 and since then they have been ruling different segments in the supplement market. 

Supplement review: 

Although BPI Sports Best Glutamine offers a serving size of 6.5 grams, it contains a broad spectrum of glutamine. 

Its one of the best glutamine supplements for someone looking for all-round development instead of only muscle support. Expect this supplement to improve your immune health, intestinal health and overall improvement in athletic performance. 

NOW® Sports L-Glutamine Powder

Another potent and effective L-Glutamine supplement you can add-up into your inventory. NOW has a reputation of one of the oldest supplement brands with many decades of expertise. 

NOW sports L-glutamine is a 100% pure L-Glutamine that has been manufactured in the start-of-art lab facility of the company. 

Product Highlights: 

  • 5 Grams of Pure L-Glutamine
  • With Nitrogen Transporter
  • Sports certified and Informed-Choice Certified
  • Non-GMO
  • Vegan

About NOW Sports

NOW Sports was founded in 1968 which makes it one of the oldest sports nutrition company. The company owns several manufacturing facilities in the United States and Canada. NOW Sports produces high quality products through extensive research in their state-of-the-art laboratories that help in maintaining the high quality of products. 

Product review: 

Although mixability was not at its finest but the product is great. Its easy on the stomach and can be easily digested by almost anyone. Its 5 grams of l-glutamine is potent enough to support effective muscle recovery. For best results, its recommended to consume 2-3 scoops a day, every container contains 91 servings which make it a perfect stack for a month.

Evlution Nutrition L-Glutamine 5000

One thing that I love about Evlution Nutrition is their consistency of producing high quality products. Evlution Nutrition L-Glutamine 500 is 100% pure L-glutamine isolates that have been derived from the extensive filtration process. 

Supplement Highlights: 

  • 5000mg of Pure L-Glutamine in each serving. 
  • Ultra-pure pharmaceutical grade
  • Vegan
  • Gluten-free
  • Made in USA

About Evlution Nutrition: 

It’s a US bases sports supplement company that has earned quite good goodwill in a short period of time. There high-quality ingredients and top-notch form of ingredient helped them deliver products that were really outstanding. 

I personally love the Evlution Nutrition supplement line; I have tried most of them and they all surpassed my expectation. 

Supplement Review:

Although, evolution nutrition is not the biggest name in the supplement industry but that doesn’t stop them from delivering finest quality of products. 

Evolution Nutrition L-Glutamine 500 delivers a 100% pure L-glutamine that will help you retain your muscle mass and will also help in healing your gut. People suffering from leaky gut syndromes can also opt for this supplement brand. 

Benefits Of Glutamine

Still wondering, whether you should stack a glutamine supplement in your inventory? Have a look at the benefits L-Glutamine has to offer. 

Glutamine is also known as a conditionally essential amino acid, this means that your body has the capability to produce it on its own, but sometime you might require to supplement it because of illness or body’s heavy requirements. 

During the stage of peak stress, L-glutamine might be your best friend to support your muscle mass and endurance. Let’s have a look at the top benefits of glutamine. 

Immune system

One of the greatest impact of glutamine is on your immune system, it acts as a critical fuel source for white blood cells and other antibodies(11). Your body’s requirement of glutamine elevates in the state of illness and it might breakdown protein if sufficient glutamine is not provided which makes it very necessary to supplement with glutamine in a state of illness (8). Supplementing with glutamine may result in fast-tracking your recovery process after illness or injury.  

Better intestinal health

Its not just good for the immune system and muscle support, glutamine plays a vital role in maintaining intestinal health as well. Glutamine helps in preventing harmful bacteria and other toxins from transporting from your intestines into the rest of your body (9). 

Glutamine act as a energy source for your intestinal cells too, and regulates the number of healthy gut bacteria for proper digestion. Millions of people are affected by Leaky Gut Syndrome, glutamine is especially helpful for those people (12). 

Prevents muscle breakdown

L-Glutamine is a building block of protein and plays vital role in muscle development.

L-Glutamine is found specifically beneficial to protect the muscle from breakdown, because of the number of reasons. 

A study conducted on the effect of glutamine on muscle development, at the end of study there was no considerable difference found in the muscle development of group who was supplemented with l glutamine and the placebo group. 

So, if you are looking to take glutamine for new muscle tissue, you might be disappointed. But if your intention is to eliminate muscle loss while intense workout or to strengthen the immune system then supplementing with L-Glutamine is surely a great choice. 

Remember, preventing muscle breakdown plays big role in muscle development and strength gain. 

How much l glutamine to take?

A recommended dose can be between 10-15 grams of glutamine per day is a good enough, for serious athletes it might go upto 25-30 grams.

Although long term supplementation of glutamine is not shown to cause any harm to the body, it’s recommended to add Vitamin B12 to control glutamine levels in the body.

How we ranked the products?

To give you the best insight about the products we usually follow a fixed procedure. Here is the list of criteria’s that kept in mind before shortlisting the top 5 L glutamine products. 

  • Brand value: which plays an important role in product efficiency
  • Manufacturing: We prefer products that are manufactured within the boundaries of the United States.
  • Purity: the number of third-party tests conducted on the product.
  • Customer satisfaction: the number of satisfied customers is always an important criteria before selecting a product. 
  •  Personal experience: we have been in the fitness industry for about two decades now, we usually try to choose only supplements that we have used before. 

Thanks for reading. Questions are welcomed in the comments as always. This site contains affiliate links as well as general health and fitness information. Please read my Medical Disclaimer and Writing Disclaimer for more information.    

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