Best Capsules L Glutamine Supplements in 2026

HEALTHY MOOD, RELAXATION, CALMING - L-Theanine is an analog of the amino acids L-Glutamine and L-Glutamic Acid and is derived primarily from tea leaves. L-Theanine has been shown to effectively bring on relaxation without inducing drowsiness, and relieve mental and physical tension.*

BEST VALUE - Powerful formula containing 250 mg and 90 vegetable capsules of pure L-Theanine.

ABSOLUTE PURITY - ZERO SYNTHETIC ADDITIVES, FILLERS, HEAVY METALS, ADULTERANTS - You will never see unnecessary additives such as stearates, dioxides, glycerides or fillers other brands use to make manufacturing cheaper, faster and easier. In addition, we put all ingredients and products through rigorous testing to make sure they are 100% free of contaminants.

Highlights: NAG is an aminosaccharide, synthesized from glucose and the amino acid L-glutamine that has been stabilized by complexing it to an acetyl group; It’s the body’s precursor to hyaluronic acid, which is part of the synovial fluid in joints

Joint and Intestinal Health: NAG combines with mucin secreted from goblet cells to support the glycocalyx, a protective layer of glycoproteins and polysaccharides that lines the digestive tract; NAG supports joint and intestinal health

For Best Results: For best results, use with Jarrow Formulas JarroSil, the biologically Activated Silicon

GET MORE WITH YOUR GLUTAMINE | Fuel your body with Evlution Nutrition Glutamine1000, containing 1 gram of Ultra Pure L-Glutamine that supports a variety of essential functions to keep your body running strong.

FAST WORKOUT RECOVERY | L-Glutamine is one of the major amino acids involved in muscle synthesis, which means that the body is actively using it to repair injured or damaged muscle tissue. This makes it the ideal supplement to take to shorten recovery time and boost muscle mass.

STARTS AT THE SOURCE | Our Glutamine1000 formula delivers 1 gram of ultra-pure, pharmaceutical grade L Glutamine - and nothing else - to ensure proper dosage and maximum absorption. We source our Glutamine exclusively from high-quality, easy-to-metabolize plant sources to support optimal levels during and after your workout.

▶▶▶ N-Acetyl-L-Cysteine Ethyl Ester ：Studies have shown that NACET has much higher bioavailability (around 60%) than NAC. NACET rapidly enters the cells, then is trapped, and transforms into NAC and Cysteine. Because NACET (but not NAC) may pass the blood-brain barrier and provide a variety of beneficial antioxidant actions, NACET is present in the cells of various tissues, including the brain. NACET is known to be beneficial to the brain system.

▶▶▶ Powerful Antioxidant Effects: As a precursor to the powerful antioxidant glutathione, NACET enhances protective antioxidant activity throughout the body. Because of its ability to enter cells and create NAC and cysteine, N-Acetylcysteine bonds with glutamine and glycine to form glutathione. NACET is the number 1 way to increase cellular Glutathione content. NACET helps increase energy levels, improve the immune system.

▶▶▶ NACET Ingredients : With the addition of 600mg Glycine, 30 mcg Selenium supplement, and 50 mcg Molybdenum. Glycine is required for Glutathione, tissue maintenance, hormone creation, and enzyme synthesis. Selenium is involved in the removal of hydrogen peroxide and lipid peroxide produced during oxidative stress.Molybdenum works in the body to break down proteins that certain enzymes then use to break down toxins in the body.

Workout recovery – Best Aminos contains glutamine, which helps prevent muscle breakdown and supports the recovery process.

Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery

Strength, power and endurance – When taken before your workout, research shows that branched chain amino acids (BCAAs) can help increase your strength, boost endurance and improve performance.

#1 IMMUNE SYSTEM SUPPORT SUPPLEMENT WITH TOP 10 POWERFUL NON-GMO + SUPER-CONCENTRATED INGREDIENTS: Formulated with potent herbs, vitamins & nutrients, our all-natural elderberry with zinc and vitamin c for adults formula can help support immunity through crucial vitamins and gut microbiome support.

MAXIMUM POTENCY 1679MG - 300% VITAMIN C - 450MG ELDERBERRY - 150MG 95% CURCUMINOIDS - 300MG ECHINACEA: Many Americans don’t get enough daily Vitamin C? Our immunity vitamins formula delivers 300% DV of Vitamin C, along with trusted ingredients shown to help support immunity, skin and provide antioxidant support to help fight free radicals.

MADE WITH VITAMIN E, C, B6, ZINC, L-GLUTAMINE, ELDERBERRY, ECHINACEA, GARLIC, TURMERIC CURCUMIN, PROBIOTICS & MORE: Our potent capsules contain clinically-researched super-concentrated extracts, vitamins, trace elements, and probiotics shown to help support immunity all year round.

𝟮𝗫 𝗠𝗢𝗥𝗘 𝗣𝗢𝗧𝗘𝗡𝗧: We use glutathione’s most bioavailable, stable form, l-glutathione, rather than the inactive oxidized form, at a potent 1000mg dose. This optimal amount has been shown to increase the glutathione levels of red blood cells by up to 35%, contributing to immunity and glowing skin.

𝗔𝗡𝗧𝗜𝗢𝗫𝗜𝗗𝗔𝗡𝗧 𝗠𝗜𝗧𝗢-𝗣𝗥𝗢𝗧𝗘𝗖𝗧: To create our complex, we combine 1000mg glutathione with milk thistle extract, which is rich in antioxidant silymarin. It stops liver enzymes from breaking down glutathione (made up of glutamine, glycine & cysteine), offering you more PROTECTION FROM FREE RADICALS.

𝗘𝗡𝗛𝗔𝗡𝗖𝗘𝗠𝗘𝗡𝗧 𝗖𝗢𝗠𝗣𝗟𝗘𝗫: Other supplements don’t include enhancers. We formulate with GLUTATHIONE-BOOSTING INGREDIENTS: milk thistle, a strong antioxidant, and alpha lipoic acid, a water- and fat-soluble acid that works in every cell. These prompt the liver to USE GLUTATHIONE 3X MORE EFFICIENTLY.

L-Glutamine Dietary Supplement

800mg of L-Glutamine per Capsule

180 Servings of L-Glutamine Powder Per Bottle

Gastrointestinal Health: G.I. Integrity is a blend of four key compounds to provide optimal support for G.I. gut integrity and health.*

Immune Support: G.I. Integrity supports healthy immune defense within the G.I. tract, as well as maintains G.I. comfort and function.*

Healthy Nutrient Absorption: L-glutamine supports healthy intestinal integrity by protecting mucosal linings and maintaining healthy villous function. Helping ensure proper nutrient utilization while limiting the amount of toxins that pass through the intestinal barrier.*

L-GLUTAMINE: The body's most abundant amino acid

ADVANCED FORMULA: Provides serious support for athletes with 1,500 mg of glutamine per serving

ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living

L-Glutamine 1,000 mg per serving. 200 veggie caps for a 100 Day Supply.

Vegan/Vegetarian, Non-GMO, Gluten Free. L-Glutamine free form.

Advanced and superior formulation using high-quality sourcing and innovation.

Recovery & Muscle Soreness - 10g Essential Amino Acids (including 8g BCAAs). The combination of BCAAs and EAAs assist with muscular endurance, recovery & delays fatigue.

Performance & Muscle Preservation - 50mg of patented SENACTIV recovery booster is scientifically validated to promote energy and muscle preservation. SENACTIV is a science backed recovery booster ingredient for support of energy production while preserving muscle cells and helping your body to regenerate new cells.

Super Nootropic Focus - 1,500mg Tyrosine and Huperzine-A are the foundation for our super nootropic matrix for razor sharp, dialed-in focus and mood enhancement to max out every gym session.

OPTIMAL PREBIOTIC/PROBIOTIC BLEND: 14 Billion CFU of 7 Probiotic strains, 300mg of prebiotic fiber from SunfiberⓇ , and L-glutamine, an amino acid that supports gut lining.

7 CAREFULLY SELECTED STRAINS: Our blend includes Lactobacillus Plantarum 6595, Bifidobacterium lactis BI-04, Lactobacillus reuteri, Lactobacillus paracasei, Lactobacillus salivarius, Bifidobacterium breve and Bifidobacterium longum BI-05.

PACKAGING MATTERS: The way your probiotic supplement is packaged is another crucial component in its efficacy, as this impacts whether or not the bacteria remain alive and healthy while being delivered to you. The Alaya Advanced Synbiotic is packaged in a dark glass container to protect the probiotics from UV damage and moisture.

IMMUNE SUPPORT & MUSCLE RECOVERY: L-Glutamine is the most abundant amino acid in the body and is important for immune system function. Some studies suggest that L-Glutamine may help reduce muscle soreness and support muscle recovery after exercise.*

GUT HEALTH SUPPORT: L-Glutamine is an important fuel source for the intestinal cell lining, and it may help support healthy gut function.*

PURE FORMULA: Bestvite L-Glutamine contains no stearates, is non-GMO, gluten-free, and comes in an additive-free capsule. Each capsule contains 1000 mg of L-Glutamine.

Durable Product

1500MG L-Glutamine Plays an Important Role in Muscle Function Pre- & Post-Exercise* Pro Performance Results Supplementation may help maintain glutamine levels that have been depleted as a result of intense exercise and may support muscle function.* Glutamine is involved in protein synthesis and plays a pivotal role in the body's nitrogen balance.* It serves as a fuel for the immune system and maintenance of proper intestinal function.*

Plays An Important Role In Muscle Function Pre- & Post-Exercise

Pro Performance Results

The brain needs glumatic acid as a fuel to power numerous brain functions but it cannot cross the blood brain barrier. l-Glutamine can more easily enter the brain and be converted into glutamic acid, a neurotransmitter believed to support mental alertness and mood.

Suggested Use: 1 capsule daily.

Allergies: Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no preservatives, or artificial color, flavor or fragrance.

✅ YOUR SEARCH FOR THE MOST EFFECTIVE PROBIOTIC SUPPLEMENT IS OVER- Just take a look at the ingredients to understand why. To feel your best, you need the most potent ingredients with none of the harmful additives or fillers. We offer a formula that not only delivers results, but also we are proud to take ourselves and give to our families.

✅YOU DON’T HAVE TO SETTLE FOR JUST A “GOOD” PROBIOTIC- You don’t settle in other areas of your life so why settle here? Our formula is the most complete one on the market today with 12 of the most effective, clinically-proven probiotic strains, an organic prebiotic, and L-Glutamine to increase absorption and repair "leaky gut". 100% plant-based veggie capsules reduce oxidation and keep more bacteria alive.

✅“PERFECT” MEANS ZERO ADDITIVES OR ALLERGENS- No animal products, no fillers, no GMOs, no soy, no gluten, no sugar, no additives of any kind. Our commitment to excellence extends to our manufacturing process as well. Rebalance is made right here in the US under strict GMP guidelines and kept in a climate-controlled facility to keep all the bacteria alive and potent.

SUPPORTS GUT TISSUE REPAIR - Damage to the gut lining (or leaky gut) can allow harmful toxins into the body and cause health issues. Leaky Gut Repair combines potent ingredients to restore gut health. This provides the building blocks needed to rebuild and repair the cells in the wall lining.

PROVIDES DIGESTIVE & GUT RELIEF - Soothe bloating, constipation, heartburn, and IBS symptoms with our gut care supplement. This gut health powder stimulates mucilage production, which coats the stomach and gut lining. This helps reduce swelling and shields the wall lining from further damage.

STRENGTHENS GUT HEALTH - A healthy gut is essential for overall health. Our gut health supplements contain nutritional components like L-glutamine, slippery elm, and marshmallow root that are critical for complete gut health restoration. These ingredients work together to bolster your GI tract.

L-Glutamine 500mg Per Serving Supplement

250 ServingsPer Bottle, 1 Capsule Per Serving

Non-GMO, Gluten Free, Third Party Tested

Digestive supplement: Amen Leaky Gut + is an all-in-one digestive supplement that provides bioavailable amino acid L glutamine, zinc, organic turmeric, licorice root, and marshmallow root along with a blend of probiotics in easy to use capsule format.

Probiotics & prebiotics: Leaky Gut supplement formula also features 10 Billion CFU of plant-based and soil-based shelf-stable probiotics with 4 different probiotic strains (Bacillus clausii, Bacillus coagulans, Bacillus subtilis and Saccharomyces boulardii). Amen Leaky Gut + offers organic and fermented prebiotics including organic apple cider vinegar, organic ginger, and organic turmeric. Our Probiotics are shelf-stable which means they do not need to be refrigerated.

Glutamine: This dietary supplement offers L-Glutamine. Glutamine is an important amino acid which can play a role on the digestive tract and mucosal cells. These cells are necessary for the intestinal lining. Glutamine is linked to glutathione, one of the body's main antioxidant.*

SKIN BRIGHTENING BENEFITS- Bright and even skin contributes to a look of youth and vitality. Glutathione helps to rid the body of damaging toxins that accelerate the skin ageing process and contribute to fine lines wrinkles sun spots hyper-pigmentation and uneven skin tone.

BEST TOP RATED ANTIOXIDANT-Pure glutathione has been dubbed “the mother of all antioxidants” because it delivers such a large effect on internal cellular processes and prevents toxicity. It is composed of three key amino acids. They are cysteine glycine and glutamine which combine to produce the superb antioxidant known as glutathione. This super antioxidant blend also help stabilize other key antioxidants such as vitamin C and E and allows the body to benefit from them.

GSH ANTI-AGING BENEFITS: Glutathione, also known as GSH, is one of the best anti-aging supplements because it helps reduce the presence of damaging free radicals. Studies have shown that majority of chronic illness can be linked to free-radical tissue damage. While helping rid the body of free radicals, glutathione also aids the immune system and helps detoxify the liver. Glutathione may also inhibit the production of melanin, and can be used for whitening the skin and reducing age spots.

500mg L-Glutamine - in just 1 one capsule

Aids in muscle support - L-glutamine plays a key role in transporting nitrogen and carbon between organs, a process vital for muscle support.

Supports immune function - and Vitamin B6 is included for utilization

Unique GI support complex featuring patented zinc L-carnosine and L-glutamine.*

Zinc carnosine has been shown to help protect the stomach lining and promote gastrointestinal comfort.*

L-glutamine promotes small intestinal cell function and mucosal integrity to further support gastric function and protect tissues.*

PROVIDES GASTROINTESTINAL SUPPORT: IPS combines a number of gut-supportive nutrients such as L-Glutamine, Jerusalem Artichoke, Glucosamine Sulfate, Gamma Orysanol, L-Glutathione, along with lamb intestine concentrate, for optimal support of the GI tract.

SUPPORTS GUT LINING AND HEALTHY INTESTINAL PERMEABILITY: A diet high in allergenic foods or toxins potentially aggravates the gut, making it more difficult to digest food and absorb nutrients. IPS provides the nutrients necessary to support gut lining integrity and functioning.

SOOTHES INTESTINAL MUCUS MEMBRANE: Nutrients found in IPS help support the natural secretions of the mucous membranes in the gastrointestinal tract.

ANTIOXIDANT SUPPORT: N-Acetylcysteine bonds with glutamine and glycine to form glutathione - a powerful antioxidant. NAC supplements help fill any gaps in your natural cysteine levels to support antioxidant activity in your body.

IMMUNE SUPPORT: N-acetyl cysteine (NAC) is a stable form of the non-essential amino acid cysteine, and has been shown to promote your body's immune response. Our N-Acetyl-L-Cysteine supplement contains 90 NAC 600 mg capsules, which are Vegan Certified, Non-GMO Project Verified.

LEMON AROMA: Each bottle of Sports Research NAC contains a ScentCert heart insert, delivering a fresh aroma of lemon zest. The scented insert is made from all-natural flavors and will not negatively impact the efficacy or integrity of our NAC supplement.

EFFECTIVELY ACCELERATE MUSCLE RECOVERY AND RELIEVE STIFFNESS AND SORENESS- Amino acids are needed by the body to rebuild, muscles.

SUPPORTS DIGESTIVE FUNCTIONING AND PROMOTES BRAIN HEALTH- L-Glutamine is a primary fuel that your stomach uses to repair the lining of your digestive tract and so, our pure Glutamine supplements also assists in maintaining your digestive tract. Our body utilizes L-Glutamine and converts it into glutamic acid to support cerebral functioning. Hence, our L Glutamine supplement also helps to promote optimal brain functioning and boost memory and focus.

GUARANTEED PURITY IN BPA FREE, RECYCLABLE GLASS BOTTLES- Cheap plastic bottles are harmful to the environment and your health. We seal your supplements in non-polluting amber glass bottles with heat-sealed sleeves and best by dates to ensure the safest and purest product available. Unlike some other supplement manufacturers, our bottles are fully recyclable. Each bottle contains 50 capsules that are easy to swallow and Gluten Free.

PURE SOURCE OF THE CONDITIONALLY ESSENTIAL AMINO ACID GLUTAMINE – Delivers the body’s most versatile amino acid. Essential for healthy skeletal and cardiac muscle function. Promotes the healthy mucosal lining and barrier function of the intestines and digestive system. Promotes nitrogen balance and acid-base balance. Represents an important energy source for specialized cells of the nervous and immune systems. One of only three amino acid building blocks of Glutathione.

SUPERIOR 100% PURE BIO-ACTIVE INGREDIENTS – Provides 500 mg of pure Glutamine – one of the most abundant amino acid present in muscle tissue. Contains NO Milk / Dairy-Free, Gluten Free; NO soy, yeast, corn, wheat, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens or manufacturing additives.

UNSURPASSED PURITY, QUALITY, & EFFICACY. WON’T UPSET YOUR STOMACH! – For 40+ years ProCaps products have contained NO additives of any kind. NO binders, fillers, lubricants, stabilizers, flowing agents, preservatives or artificial colors. Easy-to-swallow capsules (NO tablets) deliver only the MOST bioactive vitamins, minerals & ingredients in an ultra-fine micro-granulated powder for fast, complete absorption & maximum effectiveness. Non-acidic formula is gentle even on most sensitive stomachs.

2 BOTTLES OF FREE FORM L-GLUTAMINE: NOW Brand's new value size of this premium 500 mg amino acid supplement.

EASY TO TAKE ON THE GO: No need to mix any powder. Easy to take these capsules when at the gym or at work or over lunch. BENEFITS FOR MEN AND WOMEN: Glutamin supports immune function* & nitrogen transporter*. Benefits gut health*.

BETTER FOR YOU: Non-GMO, Vegetarian, Vegan.

BCAAs – 2:1:1 ratio of leucine, isoleucine, valine

RECOVERY – take your training efforts to the next level by supporting endurance and recovery*

1000MG OF PURE L-GLUTAMINE PER CAPSULE