10 Best glutamine supplement (2025)

Glutamine supplements are essential for athletes and fitness enthusiasts looking to enhance recovery and support muscle growth. In 2025, the 10 best glutamine supplements stand out for their quality and effectiveness. Brands like Optimum Nutrition, MusclePharm, and BSN offer pure L-glutamine formulas that promote gut health and immune function. Additionally, products from Cellucor and Kaged Muscle incorporate advanced delivery systems for optimal absorption. With options like flavored powders and capsules, these top-rated supplements cater to various preferences, ensuring that users can easily integrate them into their routines for maximum benefits.

Bestseller No. 1

Optimum Nutrition L-Glutamine Muscle Recovery Capsules, 1000mg, 240 Count (Package May Vary)

1000 milligram of pure l glutamine per 2 capsules
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
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

SaleBestseller No. 2

NOW Foods Supplements, L-Glutamine 500 mg, Nitrogen Transporter*, Amino Acid, 120 Veg Capsules

Amino acid/supports immune function: Glutamine is considered to be a conditionally essential amino acid, which means that under certain circumstances, the body may require more glutamine than it can produce. In that case, supplementing with glutamine may help with recovery of the amino acid in the body.
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
Nitrogen transporter: In the body, glutamine functions as a major nitrogen transporter and is critical for the maintenance of healthy nitrogen balance.Store in a cool, dry place after opening
Classifications/certifications: Halal, non-gmo, kosher, dairy free, egg free, made without gluten, nut free, soy free, vegan/vegetarian
GMP quality assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).

Bestseller No. 3

Nutricost L-Glutamine Powder (500 Grams) Unflavored - Gluten Free & Non-GMO, 100 Servings

5000mg of L-Glutamine Powder Per Serving (100 Servings)
1.1 Pounds (500G) of L-Glutamine Powder Per Bottle
Vegetarian Friendly L-Glutamine Powder
Non-GMO, Gluten Free, Soy Free
Manufactured In a GMP Compliant, FDA Registered Facility

Bestseller No. 4

THORNE L-Glutamine - Amino Acid Supplement for GI Health and Immune Function - 90 Capsules

L-Glutamine: An amino acid that helps with post-exercise muscle cell repair and promotes gastrointestinal and immune system health*
Gut Health: Benefits gastrointestinal health and helps maintain gut permeability and optimal gut barrier function*
Recovery: Helps restore plasma glutamine levels depleted after periods of physical stress, such as prolonged exhaustive exercise*
Immune Support: Helps maintain immune health and supports wound healing*
Trusted: Thorne is trusted by 100+ pro teams. Thorne is the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is a proud partner of U.S. Olympic Teams

Bestseller No. 5

BulkSupplements.com L-Glutamine Powder - Glutamine Supplement, L-Glutamine 5000mg, L Glutamine Powder - Unflavored & Gluten Free, 5000mg per Serving, 1kg (2.2 lbs) (Pack of 1)

Maximize your Potential: Enhance your active lifestyle with our L-Glutamine powder, designed to support your strength and performance goals. Each serving delivers a substantial 5000mg dose, catering to both fitness enthusiasts looking to push their limits.
Versatility for all Lifestyles: Whether you're an athlete, a sprinter, or someone simply looking to stay active, our Glutamine supplement, in L Glutamine 5000mg, fits seamlessly into your regimen, adaptable to a wide range of dietary needs and preferences.
Optimized in every Serving: Our L-Glutamine powder, a Glutamine supplement, is unflavored and free of unnecessary allergens, offering you a high-quality product that easily integrates with other supplements or your preferred shake or beverage.
Transparent and Trustworthy: Experience the confidence that comes with choosing a supplement that not only meets rigorous third-party testing but also upholds the principles of clarity and integrity in its formulation and production.
Commitment to Excellence: Produced in a facility compliant with strict cGMP standards, our L-Glutamine powder, or Glutamine 5000mg supplement, stands as a testament to our dedication to quality. You can trust in our product's consistency and excellence, batch after batch.

Bestseller No. 6

Pure Encapsulations L-Glutamine 500 mg - Supplement for Immune and Digestive Support, Gut Health and Lining, Metabolism, and Muscle Support* - with Free-Form L-Glutamine - 90 Capsules

Gastrointestinal Health: L-glutamine powder nutritionally supports the mucosal lining and healthy functioning of the gastrointestinal tract*
Supports Lean Muscle: This L-glutamine supplement also helps support and preserve lean muscle mass, especially in times of metabolic stress*
Amino Acid: L-glutamine is the most abundant amino acid in the body; glutamine is utilized by the body for tissue repair and gastrointestinal tract support*
Pure Quality: Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then carefully manufactured and tested to verify potency and purity
Pure Difference: What we leave out matters, too; Pure Encapsulations products are free from common allergens, artificial or unnecessary ingredients, and GMOs

SaleBestseller No. 7

GLUTAMINE POWDER – MuscleTech Platinum 100% Glutamine powder supplies 5g of l-glutamine per serving, which works to rapidly replenish the glutamine used during training
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
AMINO ACID SUPPORT – Glutamine is the most abundant, conditionally essential free amino acid in your body – more than 20% of the amino acids in your body are glutamine. When you’re training hard, your muscles can lose up to 50% of their glutamine stores
REPLENISH PLASMA GLUTAMINE – Glutamine plays an important role in muscle protein synthesis and helps support increased cell volume and glycogen replenishment
TASTELESS / ODORLESS / DISSOLVES INSTANTLY – Glutamine is perfectly tasteless and odorless and mixes easily on its own or into any other product you’re already using. This non-stimulant formula stacks perfectly and can be used day or night

Bestseller No. 8

L Glutamine Capsules - No Fillers (1000mg Servings, 120 Capsules) Non-GMO, Gluten Free, Keto Safe, Vegan Friendly, Third Party Tested (for Endurance and Gut Health) by Double Wood

GLUTAMINE FOR GUT HEALTH AND EXERCISE ENDURANCE - L Glutamine Powder may help with leaky gut repair, bloating, gas, discomfort, and intestinal wall support. It can also help promote exercise endurance in the gym
VEGAN AND KETO FRIENDLY L GLUTAMINE - Double Wood's L-Glutamine capsules (El Glutamina) are not synthesized from animal sources and are safe for both vegans and those in ketosis
NO FILLERS, Manufactured in the USA from Globally Sourced Ingredients, NON-GMO, GLUTEN FREE - Double Wood's L Glutamine Capsules contain no fillers, are Manufactured in the USA from Globally Sourced Ingredients, are Gluten Free, and Non-GMO
TWO MONTH SUPPLY - Each bottles contains 60 servings of 1,000mg L-Glutamine with no fillers. (120 capsules, 500mg per capsules)
SATIFSACTION ASSURED - If you aren't happy with our l-glutamine powder capsules for any reason please contact us and we promise to make things right

SaleBestseller No. 9

Nutricost L-Glutamine 800mg, 180 Capsules - Gluten Free, Non-GMO

L-Glutamine Dietary Supplement
800mg of L-Glutamine per Capsule
180 Servings of L-Glutamine Powder Per Bottle
Non-GMO, Gluten Free, Soy Free
Manufactured In a GMP Compliant, FDA Registered Facility

Bestseller No. 10

Creatine + Glutamine - Creatine Supplement with L-Glutamine for Muscle Recovery, Muscle Growth, Increased Strength, Enhanced Energy Output, and Gut Health - 30 Servings, Unflavored

Synergistic Muscle Support: Maximize your workout results with the dynamic duo of Creatine and Glutamine. Creatine Monohydrate & L-Glutamine's synergistic benefits support muscle recovery and a reduction in muscular fatigue, ultimately enhancing strength gains and promoting lean muscle mass.
Gut-Friendly Formula: Worried about bloating? Our Creatine + Glutamine blend includes gut-friendly Glutamine, which helps prevent the digestive discomfort some experience with creatine monohydrate supplementation, so you can experience maximum results without bloating.
Amplify Your Strength: Fuel your workouts with 5g of Creatine Monohydrate, a proven ingredient that enhances muscle strength and power. Experience increased energy levels, allowing you to push through intense training sessions and lift heavier weights. Unleash your inner athlete and elevate your performance.
Boost Endurance and Recovery: This formula features 5g of Fermented L-Glutamine in every serving, a potent amino acid known for its ability to reduce muscle soreness and promote faster recovery. By replenishing glycogen stores and minimizing exercise-induced muscle damage, L-Glutamine supports improved endurance, allowing you to train longer and recover faster.
Manufactured in a cGMP-Certified Facility: Unlike many dietary supplements, all Jacked Factory products are manufactured under stringent quality control standards to ensure proper purity and potency. This formula is completely free of harsh chemicals, fillers, and artificial food dyes.

Related Posts