2021's 10 Best L-Glutamine
TOP SUPPLEMENTS

Best L-Glutamine

L-glutamine is an amino acid that’s found abundantly in our blood and tissues. It’s needed for several biological functions, including:

  • Protein synthesis
  • Muscle building
  • Eliminating ammonia waste products
  • Supporting brain function
  • Boosting human growth hormone
  • Controlling inflammation
  • Fueling gut and immune cells

L-glutamine is naturally produced in our muscles and liver, but we also obtain it from meat, dairy, eggs, fish, tofu, spinach, legumes, rice, and corn. However, due to its health benefits, and because our bodies are constantly using it up, l-glutamine supplementation can offer big rewards. Plus, some people can’t produce enough of this amino acid while dealing with illness, stress, intense exercise, surgery, and muscle-wasting.

Health Benefits of L-Glutamine

Exercise Performance and Muscle Recovery

L-glutamine is found abundantly in muscle tissue, which makes it a beneficial amino acid for those wanting to get the most out of their workout and increase muscle recovery. Intense exercise can deplete our muscles of l-glutamine.

L-glutamine has anabolic properties. This means that it encourages muscle protein synthesis and reduces muscle breakdown. There’s evidence that L-glutamine increases human growth hormone production. Additionally, research suggests that taking L-glutamine speeds up muscle recovery by aiding in the replenishment of muscle glycogen stores, which provides fuel for our muscles.

Research has also found that l-glutamine supplementation can decrease muscle soreness and markers of fatigue during exercise.

Gut Health

L-glutamine plays a pretty big role in the health of the gut or the gastrointestinal (GI) tract. It’s fuel for the cells that make up the lining of the small intestine and is essential for a healthy gut lining.

This is extremely helpful because “Leaky Gut Syndrome” is on the rise. This condition is due to inflammation, poor diet, food allergies, stress, infections, and imbalances in the gut microbiome. If the gut lining becomes damaged or “leaky,” it results in undigested food, bacteria, toxins, and other particles getting into the bloodstream. This can play havoc with your body.

Luckily, there’s plenty of evidence from both lab and human studies to confirm that L-glutamine reduces gut inflammation and prevents intestinal permeability by supporting and repairing the GI lining.

This means L-glutamine is a great amino acid for helping to relieve:

  • Digestive discomfort
  • Ulcerative colitis
  • Abdominal surgery

Immunity

L-glutamine plays a big role in the immune system by providing fuel for immune cells.

It also supports immunity through its ability to heal and soothe the GI tract. This is because our gut is the largest immune organ that houses trillions of healthy gut bacteria and produces immunity compounds.

Research suggests that taking L-glutamine can strengthen immunity, improve recovery time, and reduce the chance of infection after hospital stays and surgery.

It may also be especially beneficial for athletes and fitness enthusiasts, as strenuous exercise can lower the body’s immunity. A study in 2015 found that athletes who took 10g of L-glutamine daily when engaging in heavy training for 6 weeks had better immune function and experienced less of the immunosuppressive effects associated with intense exercise.

Blood Sugar Control

People with type-2 diabetes may have lower levels of L-glutamine in their body.

Studies suggest that supplementing with L-glutamine can improve insulin secretion and insulin sensitivity, therefore supporting blood sugar control.

A 2015 study gave type-2 diabetics high doses of L-glutamine daily. Interestingly, it found significant improvements in fasting blood glucose levels as well as glycated hemoglobin (HbA1c) — a marker of long term blood sugar control.


2021's 10 Best L-Glutamine
TOP SUPPLEMENTS

Our list of the top 10 L-glutamine supplements is organized to reflect what you most value in your supplements. First and foremost is quality. All ten of these top ten supplements meet high standards of quality and come from brands with a proven record in excellence and purity. Another important factor in deciding the top ten was cost. You don’t have to pay through the nose to get a high quality supplement. In addition, all the companies represented on our top ten list have stellar records with customer service and prompt shipping to ensure that your supplement experience is enjoyable from the first click to your final dose.

Staunch L-Glutamine Powder is the #1 Rated L-Glutamine Powder, as it is high quality and half the price of its competitors. Staunch L-Glutamine Powder features 3g of L-Glutamine in each serving. Click Here for Lowest Price

Uniquely, Staunch is one of the few companies that control the full chain of manufacturing, from sourcing to manufacturing in an FDA-registered facility to warehousing and fulfillment, ensuring strict quality standards are met. Staunch also offers exceptional customer support for all of its products.

Priced at $15, Staunch L-Glutamine Powder comes with 50 servings, which is just $0.30 per serving. With Staunch, you can be assured that this product does not contain any extra ingredients, fillers, or preservatives.

Staunch L-Glutamine Powder comes with a 120-day, no-questions-asked, money-back guarantee – the best guarantee on the market!

  • High Quality Pure L-Glutamine Powder
  • Less than a Quarter per Serving
  • 250 Grams per Bottle
  • Natural Occurring Amino Acids
  • Build Muscle and Aid Recovery
  • Non-GMO, Gluten Free
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • 5000mg of L-Glutamine Powder Per Serving (100 Servings)
  • 1.1 Pounds of L-Glutamine Powder Per Bottle
  • High Quality L-Glutamine Powder
  • 500 Grams of L-Glutamine Powder Per Bottle
  • Manufactured In a GMP Compliant, FDA Registered Facility
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • 100% L-Glutamine Powder
  • Perfect For Building And Retaining Muscle
  • Improves Digestion Health
  • Non-GMO, Third Party Tested
  • Serving Scoop Included
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • Our #1 L-Glutamine Supplement
  • Just over a Nickel a Serving, compared with the Average cost of a Dime!
  • 800mg of L-Glutamine per Capsule
  • 180 Servings of L-Glutamine Powder Per Bottle
  • Non-GMO, Gluten Free
  • Manufactured In a GMP Compliant, FDA Registered Facility
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • Pure pharmaceutical grade L-Glutamine
  • Lab tested for verification & guaranteed purity
  • Promotes muscle growth & prevents muscle loss
  • Non-GMO
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • PURE GLUTAMINE FOR DEVELOPMENT & RECOVERY: NusaPure’s L-Glutamine Powder is a pharmaceutical-grade amino acid supplement, manufactured in the USA and free of fillers, flavors, colors and sweeteners. Ideal for athletes, it helps stimulate muscle growth and significantly improves recovery time.
  • 200 VEGGIE CAPSULES – 500MG each – Over 3 month supply. One bottle of our product contains 200 vegetarian capsules of Pure High Potency Maximum Strength L-Glutamine in every serving. Buy fewer bottles saving you money and time. Premium supplement - Great Price!*
  • GREAT POST-WORKOUT BENEFITS: NusaPure Glutamine protects your body from the negative effects of overtraining. You will notice marked improvements in performance, strength, endurance, recovery, immune function and gut health.
  • THIRD-PARTY TESTED: All NusaPure Nutrition products are independently third-party tested for purity, safety, and nutritional value.
  • STILL NOT SURE? DON’T WORRY! – As a small family business, we fully understand the uncertainty and risk of trying new supplements. And this is why we go extra mile to source only the highest quality ingredients. Also, trust and transparency is at the forefront of our brand. We list every single ingredient on our products so that you can make an informative decision. Let us know if you have any questions or if can be of any service!
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • 1000 milligram of pure l glutamine per 2 capsules
  • Most abundant amino acid in the body
  • Plays an important role in muscle protein development
  • During prolonged periods of intense exercise, glutamine levels may be depleted
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • Supports intestinal immune function.
  • Supplies 5 g (5000 mg) of free-form L-glutamine per scoop.
  • Supplementation with the amino acid glutamine can help support gut cell proliferation and mucosal integrity.
  • Hypoallergenic* product with none of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, corn, and yeast. Contains no artificial colors, flavors, or preservatives.
  • Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by a healthcare practitioner.
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • MUSCLE + IMMUNE SUPPORT: Micronized L-Glutamine supports muscle tissue and mass after physical activity and immune system function.
  • QUALITY YOU CAN TRUST: Natural Factors amino acids are the highest quality pharmaceutical grade products available.
  • LOCAL, ORGANIC, AND NON-GMO: Because Natural Factors Farms are certified organic, we don't pollute the earth with pesticides and chemical fertilizers. We grow true species non-hybridized, non-GMO seeds, including many open-pollinated varieties. Growing locally also helps reduce the carbon emissions from overseas transportation, and keep jobs in the community.
  • JUST THE RIGHT SIZE: We believe we need to be big enough to do it right. We are one of the only nutritional companies to have our own organic farms, our own extraction, encapsulation, and production facilities, our own labs and research facilities. We are also one of the few branded manufacturers of nutraceuticals in North America to have our own softgel encapsulation facility.
  • THIRD-PARTY CERTIFIED: Independently tested for GMOs and over 700 contaminants using advanced technology such as mass spectrometry to ensure purity and potency.
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.

  • Micro Ingredients Pure L Glutamine Supplements, 35 Ounce, No GMOs and Vegan Friendly.
  • Strongly Supports Muscle Performance, Energy, Stamina, Endurance, Strength and Gut Health.
  • No GMOs, No Irradiation, No Additives, No Preservatives, No Artificial Colors, No Irradiation and No Gluten.
  • Scoop included to get the measurement every time. Take it daily with or between meals by adding it to a shake or smoothie, see what the most nutrient dense food on the planet is all about.
  • Powder lover? Take it naturally in powder for higher concentration, quicker absorption, easier on the stomach, and more ways to have fun!
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*Individual Results May Vary - Ratings are based on Society Health Ranking System and do not necessarily reflect typical results from the use of these products. We encourage consumers to research by visiting each product's website for more information.