Best Glutamine Supplements Reviewed & Rated for Quality

In a Hurry? Editors choice:
Optimum Nutrition
Test Winner: Optimum Nutrition
Amazon Link
Glutamine is considered a non-essential amino acid. Amino acids are molecules used to build proteins and enzymes. L-glutamine is the most abundant that is essential for functioning. The human body creates it naturally; however, as we get older, it becomes difficult for the body to produce the recommended amount. Glutamine offers a variety of benefits as it encourages healthy muscle muscle repair and muscle tissue development.

Glutamine is the preferred energy source to help protect the immune system as well as protecting the digestive system. It performs on a cellular level as well. A healthy dose gives you the energy needed for intense workouts. Glutamine also helps with gastrointestinal health. It acts as an essential neurotransmitter for the brain as it enhances mood. In other words, glutamine benefits the body for a variety of reasons. Here is a look at our top choices for those interested in glutamine supplementation.

Standout Picks

Optimum Nutrition
Glutamine Powder by Optimum Nutrition is a very powerful glutamine supplement because it may help support muscle recovery from workouts and sports by providing vitamins and minerals that most bodybuilders need on a daily basis. This supplement powder mainly helps reduce rebuild muscle tissue while relieving muscle soreness. Furthermore, Optimum Nutrition supplement powder provides essentially 5 grams of unflavored glutamine which can also be added to protein shakes. Each bottle contains 300 grams of glutamine.
Amazon Link
$28.24
NOW Sports
Containing just one ingredient, the NOW Sports glutamine powder is all about simplicity. It is GMP-certified, meaning that it was processed and manufactured under some of the strictest guidelines. The formula is non-GMO and Kosher, so it can be a good supplement for you if you are following a strict diet or are extremely careful of what goes in your body.
Amazon Link
$21.35
BulkSupplements
The BulkSupplements glutamine powder boosts muscle resilience against the build-up of lactic acid to help stop soreness and pain associated with it. Plus, it rejuvenates muscle cells that have undergone a vigorous workout, to help you to complete any exercise routine.
Amazon Link
$12.96
Body Fortress
Body Fortress is a glutamine supplement containing an amino acid that is found in muscle tissue. This helps with supporting lean muscle gain. This glutamine powder is currently one of the company’s high-ranking products, and was noted for being the purest glutamine supplement on the market.
Amazon Link
$20.00
KAGED MUSCLE
Kaged Muscle glutamine powder is straight up, pure glutamine. It contains 5 grams per scoop. Unlike ordinary glutamine, this powder is fermented, supposedly making it biologically available for absorption and easily digestible. This supplement is also derived from vegan sources.
Amazon Link
Jarrow Formulas
Jarrow Formulas' company mission is reflected in its motto of superior formulation and nutrition. The company provides a complete line of nutritional supplements, all featuring quality standards of potency and purity value.
Amazon Link
$43.31
MuscleTech
MuscleTech glutamine powder contains 5 grams of glutamine per serving. This works to replenish the glutamine used during exercise. This product is marketed as a micronized, ultra-pure, HPLC tested glutamine supplement which is also available in tablet form.
Amazon Link
$16.40
Nutricost
Nutricost glutamine powder was designed to refuel the body with non-essential amino acids. This is a high quality supplement, suitable for people who are looking to boost their digestive health, immune system, and help with muscle recovery. This glutamine supplement is free of gluten, is non-GMO, and provides excellent value for the money.
Amazon Link
$22.95
Pure Encapsulations
Manufactured by Pure Encapsulations, Glutamine 500 mg provides the body the amino acid in a convenient pill. Every capsule contains free-form glutamine and vitamin C for promoting easy absorption in the body.
Amazon Link
$20.90
Evlution Nutrition
Being a pharmaceutical grade is just one of the great facts about Evlution glutamine supplements. It is plant-based, making it ideal for vegetarians and vegans. This supplement is gluten-free, in which there are no other listed ingredients on the label.
Amazon Link
$23.99

Criteria Used for Evaluation

Brand

A brand is crucial when making a purchasing decision. This is due to the overall impact it will make on a company. Branding changes how individuals perceive a product, as it can also encourage new business and increase awareness.

Branding Gets Recognition

Branding is important to a business because it is how companies get recognition and become well-known to consumers. The logo is an important component of company branding, as it represents the face of the company. A professional logo should be easily memorable and powerful - with the sole purpose of making an impression at first glance.

It Increases Business Value

An established brand increases value in a business by giving a company leverage in the industry. This makes it an appealing factor when trying to generate future business.

It Generates New Customers

A strong brand represents a reputable impression of the company among consumers. They are more likely to conduct business with a brand they are most familiar with. If a brand is well-established and trustworthy, people will be more apt to spread the word.

Creates Trust With Consumers

A well-strategized branding helps a company build trust with existing customers and potential ones. The public will most likely do business with a company that gives the impression of being experts in a particular industry.

Ease of Use

Glutamine supplements can come in many forms. The one you decide to take depends on how well they absorb in your body, and your personal preference. For example, some glutamine supplements are sold in a pill or capsule. Other supplements absorb faster in liquid form.

Certain supplements are sold in pills because liquids may be ineffective for some people. Others need to take a liquid when it becomes difficult for the body to absorb a pill, or when it is difficult for them to swallow tablets or capsules.

And not all forms of glutamine are the same. For example, there are different strengths to choose from. When in doubt, consult a physician about which particular supplement suits your needs.

Safety Hazards

Take notice that supplements are not endorsed by the FDA in the same manner that drugs are. They do not review supplements for efficacy or safety before they are sold to the public. Always research when choosing new supplements. Other ways to be safe:

If your diet consist of vegetables, fruits, and whole grains, speak with a physician to see if glutamine will enhance the results you are looking for.

Glutamine can be unsafe if taken in high doses. It can also affect people diagnosed with certain diseases.

Breastfeeding or pregnant women should avoid glutamine as it can be harmful to the baby. A prenatal vitamin is sufficient until delivery.

Heart medications such as aspirin, blood thinners, diuretics and steroids may not mix well with a glutamine supplement; and may cause a medical condition to get worse.

People going for surgery should avoid glutamine, as it may cause a negative reaction.

People with certain types of cancer or who are being treated for it should avoid glutamine.

Drug Interactions

Select studies that used preparations of glutamine were linked with a few side effects. This can include but not limited to gastrointestinal symptoms, swelling of the extremities, infections, headaches, and fever.

As far as drug interactions, a few reports suggested that glutamine may reduce the ammonia-lowering effect of lactulose. For people with hepatic encephalopathy or liver cirrhosis, glutamine may not be the best choice of supplement to take.

Product Purity

Check for evidence from scientific studies. Search for credible publications on how well the product works. You can contact the manufacturer to ask for studies to back up their claims. Find out how they ensure their ingredient label. Make sure the same ingredients are actually in the bottle.

If a product claims to cure a disease, or is listed as “all-natural”, or has a refund guarantee, take precaution. If it sounds too good to be true, then most likely it is.

It is ideal to choose brands that are labeled with the US Pharmacopeia, Underwriters Laboratory, NSF International, or Consumer Lab seal. These companies provide a verification process that ensures that labels contain the ingredients that the label claims. They also check for purity in the ingredients.

Many supplements manufactured outside the U.S. are not regulated and may contain toxic ingredients.

Protection

Supplements do not last forever, and may need a little care to ensure their potency. Keep glutamine supplements in a cool and dry place. Avoid damp spots such as bathrooms. Keep supplements on in a locked cabinet or on a high shelf, away from the reach of children.

Some supplements lose their potency when they sit out on the shelf for too long. Do a routine check and throw out any supplements that are past their expiration date.

10 Best Glutamine Supplements

1. Optimum Nutrition

Where to buy
Amazon Link
$28.24
Optimum Nutrition
Amazon Link

Glutamine Powder by Optimum Nutrition is a very powerful glutamine supplement because it may help support muscle recovery from workouts and sports by providing vitamins and minerals that most bodybuilders need on a daily basis. This supplement powder mainly helps reduce rebuild muscle tissue while relieving muscle soreness. Furthermore, Optimum Nutrition supplement powder provides essentially 5 grams of unflavored glutamine which can also be added to protein shakes. Each bottle contains 300 grams of glutamine.

GMP Certified

Every vendor must provide a Certificate of Analysis for all raw ingredients supplied. Certified analyses are done through independent laboratory testing and in-house. ON enforced a Hazard Analysis Critical Control Point program. As a continued measure, this process diminishes the chance for chemical, microbiological, and physical contaminants being added to ON supplements. Routine checks are performed for quality assurance on all production, storage, and blending areas, and daily inspections are conducted.

Comes Unflavored

Each serving of UN Glutamine Powder contains 5 grams of unflavored glutamine per serving. The powder is versatile as you can mix it in juice, protein shakes, or plain water. With 4 sizes available, 1000g, 600g, 300g, 150g, this supplement powder instantly dissolves in water.

Cost and Value

Optimum Nutrition has been manufacturing products that support the nutrition goals of athletes and individuals worldwide. ON strives to bring nutrition solutions with the purpose to making a difference in performance. For refunds, ON will refund the full price of the product within 14 days from receiving your refund notice. For exchanges, you can contact their customer service within 14 days from the date of delivery.

Amazon Link
$28.24

2. NOW Sports

Where to buy
Amazon Link
$21.35
NOW Sports
Amazon Link

Containing just one ingredient, the NOW Sports glutamine powder is all about simplicity. It is GMP-certified, meaning that it was processed and manufactured under some of the strictest guidelines. The formula is non-GMO and Kosher, so it can be a good supplement for you if you are following a strict diet or are extremely careful of what goes in your body.

Natural Ingredients

NOW Sports glutamine powder contains no salt, sugar, yeast, starch, corn, gluten, wheat egg, soy, milk, shellfish or preservatives. Ideal for vegans and vegetarians.

Reputable Company

NOW Sports is a company that provides, unadulterated, natural, high-quality products. All NOW Sports supplements are certified by a global quality assurance program called Informed-Sport. Consumers can be assured that any supplements they choose are effective and safe.

Cost and Value

NOW Sports strive to provide excellent customer service and top-rated quality products. Customer satisfaction is their company’s mission. Returns only apply to any products that are purchased from their website. Purchases made from retailer sites or other websites, or retail stores does not qualify. Consumers should consult the return policy from these sites.

Amazon Link
$21.35

3. BulkSupplements

Where to buy
Amazon Link
$12.96
BulkSupplements
Amazon Link

The BulkSupplements glutamine powder boosts muscle resilience against the build-up of lactic acid to help stop soreness and pain associated with it. Plus, it rejuvenates muscle cells that have undergone a vigorous workout, to help you to complete any exercise routine.

Helps With Energy and Endurance

Intense activity significantly depletes the glutamine stores in the body. Studies suggest that glutamine supplementation, such the the BulkSupplements powder, can increase the body’s energy levels. This results in more effective, longer workouts. Glutamine help with the body’s ability to maintain muscle strength.

Quality Ingredients

The BulkSupplements powder contains no dairy, yeast, sugar, additives or gluten. It features a 2:1:1 BCAA ratio. It is one of the top-ranked supplements for its ingredient safety and purity. The one major ingredient is creatine monohydrate. The creatine is micronized. This means that the texture is fluffy and disperses more easily in water versus regular creatine.

Cost and Value

BulkSupplements comes in a variety of sizes - 100 grams to 25 kilograms. As the name suggests, it is recommended to purchase this supplement in larger quantities. The price is what you make it. For returns, BulkSupplements accepts unopened products within 30 days from the date of invoice for a full refund. The company does not issue refunds for opened items. Customers are responsible for return and shipping charges.

Amazon Link
$12.96

4. Body Fortress

Where to buy
Amazon Link
$20.00
Body Fortress
Amazon Link

Body Fortress is a glutamine supplement containing an amino acid that is found in muscle tissue. This helps with supporting lean muscle gain. This glutamine powder is currently one of the company’s high-ranking products, and was noted for being the purest glutamine supplement on the market.

The Ultimate Recovery Fuel

Body Fortress glutamine powder helps you to maintain your activity by sustaining high levels of the amino acid to help assist with muscle recovery.

Created By a Reputable Brand in the Industry

Body Fortress specializes in manufacturing weightlifting supplements and premium bodybuilding supplements at a reasonable price. Their range consist of RTDs, protein powders, creatine HCI, and pre-workout powders. The company is known for their current best sellers, including whey protein powders.

Cost and Value

This powder comes in serving sizes of 4.5 g and 300 grams of powder per container. Body Fortress provide enough supplement for an estimated 2 months of use with 1 serving per day. Even with 2 servings, this supplement is perfect enough for a 1-month supply.

Between the low cost per serving, highly rated reviews, and a high purity rating, It is no surprise that Body Fortress is among the top glutamine supplement brands in the market. The company accepts returns for a limited period of time if you are not satisfied with an item. You can return the unused portion of the product for a refund.

Amazon Link
$20.00

5. KAGED MUSCLE

Where to buy
Amazon Link
KAGED MUSCLE
Amazon Link

Kaged Muscle glutamine powder is straight up, pure glutamine. It contains 5 grams per scoop. Unlike ordinary glutamine, this powder is fermented, supposedly making it biologically available for absorption and easily digestible. This supplement is also derived from vegan sources.

Plant Sourced

Kaged Muscle is an all-vegan supplement containing plant sourced ingredients, making it one of the purest form of supplements available. It’s not derived from bird feathers, human hair, or pig fur like cheaper supplements on the market. All ingredients that goes into their products are developed in the USA.

Transparency

Each container of KAGED MUSCLE glutamine powder has a 100% ingredient transparency. You will know exactly what is going into your body. This formula does not contain impurities and is gluten free. Does not contain heavy metals, and hidden toxins.

Cost and Value

The label claims that KAGED MUSCLE is MicroPure quality guaranteed. It is free of illegal substances and stamped with a gold standard seal. This company went out of their way to create a supplement unlike any other.Their patented ingredients to their manufacturing, makes this product different from the others. For those who like to train heavily, this is a great supplement. For returns, if you are not happy with a product, the company offer a 30-day money back guarantee or you can exchange it. Contact their customer support team for more details.

Amazon Link

6. Jarrow Formulas

Where to buy
Amazon Link
$43.31
Jarrow Formulas
Amazon Link

Jarrow Formulas' company mission is reflected in its motto of superior formulation and nutrition. The company provides a complete line of nutritional supplements, all featuring quality standards of potency and purity value.

Microbiological Fermentation

Jarrow Formulas glutamine powder is developed by using microbiological fermentation. This product contains 100% glutamine and uses no other substances. Contains no glutens, no wheat, no dairy, no soybeans, no fish/shellfish, no eggs, and no nuts. Product is suitable for vegans and vegetarians and is non-GMO.

Developed Using Scientific Data

Working toward a mission of providing affordable, effective, cutting-edge formulations based on scientific research. Jarrow Formulas' knowledgeable staff works closely with researchers from academic institutions and universities around the world. Jarrow Formulas strives to offer the highest quality of products to customers for optimal health.

Cost and Value

For returns, if you are unhappy with an eligible product, you can return the product and request a full refund of the purchase price or a credit in the amount of the purchase price. This process has to be done within 60 days from delivery. Eligible purchases include purchases made on the company’s website or Jarrow Formulas webpages that is linked to the company website. Or you can request an exchange of an eligible product.

Amazon Link
$43.31

7. MuscleTech

Where to buy
Amazon Link
$16.40
MuscleTech
Amazon Link

MuscleTech glutamine powder contains 5 grams of glutamine per serving. This works to replenish the glutamine used during exercise. This product is marketed as a micronized, ultra-pure, HPLC tested glutamine supplement which is also available in tablet form.

cGMP Certified

MuscleTech has put a lot of effort into making certain the ingredients listed on their label match to what’s actually inside the supplement. It is reassuring to know that this product is cGMP and HPLC certified.

Mixes With Your Favorite Drink

Platinum 100% glutamine powder mixes instantly with liquids and is tasteless. Contains no gritty or settling texture. This powder supplement is ideal for mixing with your favorite pre-workout, creatine, or protein drink – making it an effective way to boost your glutamine levels as you enjoy your favorite flavored supplements! Plus, this non-stimulant supplement formula can be used anytime, day or night.

Cost and Value

To ensure a standard of purity and quality, each container goes through a strict Quality Control process. It is verified and tested to make sure that each product meets the Muscle Tech’s high standard of consistency, quality, and purity. For returns, you can exchange or return the unused product within 30 days for a complete refund, minus handling and shipping charges.

Amazon Link
$16.40

8. Nutricost

Where to buy
Amazon Link
$22.95
Nutricost
Amazon Link

Nutricost glutamine powder was designed to refuel the body with non-essential amino acids. This is a high quality supplement, suitable for people who are looking to boost their digestive health, immune system, and help with muscle recovery. This glutamine supplement is free of gluten, is non-GMO, and provides excellent value for the money.

Made in the USA

Made in the United States at a GMP facility, each serving offers 5 grams of glutamine at a fraction of the price of their capsules. Manufactured at GMP compliant facilities.

Reputable Brand

Nutricost is considered one of the largest well-known nutrition companies in the United States. They develop products to help with immune support, cognitive support, and heart health. Their approach of providing affordable quality supplements has earned recognition - together with hundreds of positive rated reviews. Some of their best sellers are citrulline Malate 2:1, pure glutamine powder, and Vitamin C powder.

Cost and Value

Nutricost has the same similarity to Bulk Supplements in the sense that it manufactures single-ingredient products. However, they also have a wider range of supplements that extends beyond just nutrition for immune support, heart health, digestive support, and much more. For returns, Nutricost offers a 100% money back guarantee if you are not satisfied with your product. Their offer applies only for one used product.

Amazon Link
$22.95

9. Pure Encapsulations

Where to buy
Amazon Link
$20.90
Pure Encapsulations
Amazon Link

Manufactured by Pure Encapsulations, Glutamine 500 mg provides the body the amino acid in a convenient pill. Every capsule contains free-form glutamine and vitamin C for promoting easy absorption in the body.

Vegetable Sourced

This supplement is sourced from vegetables and can be taken with water or juice. You do not have to mix it with water as it comes in a tablet form. Dosages can vary for each person. For best results‚ it is recommended to be taken in 2 to 3 doses during the day. Follow the advice of your health care physician if you have any questions about usage.

Hypo-allergenic

The company seeks to manufacture hypo-allergenic dietary supplements. Quality control during the formulation process is paramount. All Pure Encapsulations supplements are created with the most bio-available ingredients whenever possible.

Cost and Value

The supplement’s value lies in its no-fillers approach with no colors or flavors. It is a good solution for people who are seeking the quality of the nutrients which go into their bodies. Statements from suppliers certifies that the ingredients in their products does not contain GMOs. For some nutrients, the company conducts testing to verify the absence of genetically modified materials. For returns, products must be sent back to the company within 30 days. Any claims regarding damages or shortage are made within 7 days of delivery. Returns are subjected to a 15% return fee.

Amazon Link
$20.90

10. Evlution Nutrition

Where to buy
Amazon Link
$23.99
Evlution Nutrition
Amazon Link

Being a pharmaceutical grade is just one of the great facts about Evlution glutamine supplements. It is plant-based, making it ideal for vegetarians and vegans. This supplement is gluten-free, in which there are no other listed ingredients on the label.

60 Servings Per Container

Each canister provides 60 servings. Each serving has 5 grams of glutamine. It comes with a scoop for measuring. At an affordable price, the supplement still manages to be a natural product. Even though the supplement can be taken at anytime, (preferably 2 to 3 times a day) it is created to optimize your glutamine levels during and after sports and workouts.

Dissolves Easily

Consumers reported feeling energetic when using this supplement. The various reviews on how easily dissolvable it is when mixed with liquids, you can add it to shakes for a tasty flavor versus adding it to a bottle of water.

Cost and Value

As far as value, the Evlution supplement will save you money versus some of the other supplements on the market. This is true if you will be using it for the long term. Evlution Nutrition provides a 30-day money-back guarantee for consumers. This glutamine supplement definitely offers value!

Amazon Link
$23.99