Updated:19 October 2026
Rank 1-14 of the best Glutamines
Our recommendation Price Customer rating
1. Comparison winner
Optimum Nutrition Glutamine Powder 630g
Optimum Nutrition Glutamine Powder 630g
Available immediately
free shipping
  • contains 5 g of L-Glutamine per serving
  • supports muscle recovery by supplementing with amino acids
  • promotes gut health
Our rating
9,6
very good
2. Best value
Lamberts L-Glutamine Powder 500g
Lamberts L-Glutamine Powder 500g
Available immediately
free shipping
  • 500g powder provides 100 servings of 5g L-Glutamine each
  • supports muscle recovery
  • supports gut health
Our rating
9,6
very good
BioTechUSA L-Glutamine 500g
BioTechUSA L-Glutamine 500g
Available immediately
free shipping
  • contains 5,000 mg of pure l-glutamine per serving
  • supports muscle recovery and repair after exercise
  • may enhance gut health by promoting intestinal lining integrity
Our rating
9,6
very good
Reflex Nutrition L-Glutamine Supplement 500g
Reflex Nutrition L-Glutamine Supplement 500g
Available immediately
free shipping
  • Provides 100 percent L-glutamine, a non-essential amino acid
  • Supports muscle recovery by assisting in protein synthesis
  • Promotes gut health by aiding nutrient absorption and gut lining integrity
Our rating
9,6
very good
5. Bestseller
Pure L-Glutamine Powder, 500g
Pure L-Glutamine Powder, 500g
Available immediately
free shipping
  • contains 5 g of L-Glutamine per serving to effectively replenish amino acid levels
  • supports muscle recovery by restoring glutamine depleted during workouts
  • promotes gut health by aiding in the maintenance of the gastrointestinal lining
Our rating
9,5
very good
Pure Encapsulations L-Glutamine Capsules, 850mg, 90 Pack
Pure Encapsulations L-Glutamine Capsules, 850mg, 90 Pack
Available immediately
free shipping
  • contains 850 mg of l-glutamine in each capsule
  • supports muscle recovery by replenishing the body's glutamine levels
  • may help maintain the health of the intestinal lining
Our rating
9,5
very good
Glutamine 120 Capsules
Glutamine 120 Capsules
Available immediately
free shipping
  • contains 3000mg of L-Glutamine per daily serving supporting high intake
  • helps support muscle recovery after exercise
  • supports gut health
Our rating
9,4
good
MuscleTech Platinum Glutamine Powder 300g
MuscleTech Platinum Glutamine Powder 300g
Available immediately
free shipping
  • contains 5 grams of L-glutamine per serving to replenish stores
  • supports muscle recovery during and after intense exercise
  • promotes gut health by maintaining the integrity of the gut lining
Our rating
9,3
good
L-Glutamine 800mg Capsules, 90 Capsules
L-Glutamine 800mg Capsules, 90 Capsules
Available immediately
free shipping
  • contains 800mg of L-Glutamine per capsule
  • supports muscle recovery by aiding in muscle repair post-workout
  • promotes gut health by maintaining the integrity of the intestinal lining
Our rating
9,1
good
L-Glutamine Powder 500g
L-Glutamine Powder 500g
Available immediately
free shipping
  • 5 grams of l-glutamine per serving for muscle recovery and growth
  • supports muscle recovery, making it ideal for athletes and fitness enthusiasts
  • promotes gut health and digestion
Our rating
9,0
good
Horbaach L-Glutamine Tablets 1500mg, 120 Count
Horbaach L-Glutamine Tablets 1500mg, 120 Count
Available immediately
free shipping
  • contains 1500mg of L-Glutamine per daily serving to support various bodily functions
  • supports muscle recovery after intense physical activity
  • contributes to gut health by aiding in maintaining intestinal barrier integrity
Our rating
9,0
good
200+ purchases last month
L-Glutamine 500mg 90 Capsules
L-Glutamine 500mg 90 Capsules
Available immediately
free shipping
  • contains 500mg of pure L-Glutamine per capsule
  • supports muscle recovery by maintaining healthy muscle glycogen stores after exercise
  • helps in supporting gut health
Our rating
8,9
good
Applied Nutrition L Glutamine 4K 120 Capsules
Applied Nutrition L Glutamine 4K 120 Capsules
Available immediately
free shipping
  • contains 4000mg of pure L-Glutamine per serving
  • supports muscle recovery by restoring amino acid levels post-workout
  • promotes gut health through efficient absorption
Our rating
8,9
good
100+ purchases last month
Warrior Glutamine, 300g - Pure L-Glutamine Powder
Warrior Glutamine, 300g - Pure L-Glutamine Powder
Available immediately
free shipping
  • contains 5g of L-Glutamine per serving
  • supports muscle recovery by aiding in the repair and healing of tissues, helping to reduce soreness after workouts
  • promotes gut health by improving digestion and supporting overall digestive function
Our rating
8,8
good

Similar Glutamine comparisons

Glutamines buying guide: How to choose the right product from the above Glutamines test or comparison

What is Glutamine? Understanding the Basics of This Vital Nutrient

Defining Glutamine

Glutamine is an amino acid that plays a crucial role in our body’s physiology. It serves as a building block for proteins and is particularly significant for muscle recovery and immune function. When we engage in intense exercise, our body’s demand for glutamine increases, highlighting its importance as a ‘conditionally essential’ nutrient, meaning under stress or during illness, our need for it surpasses our body’s typical production.

The Role of Glutamine in the Body

This amino acid is primarily found in skeletal muscles, making it vital for those looking to improve muscle recovery post-exercise. Glutamine helps transport nitrogen to various parts of the body, which can aid in tissue repair and regeneration. Additionally, it’s involved in maintaining gut health and has a significant role in the functioning of our immune system, acting as fuel for immune cells.

Benefits of Glutamine: How It Supports Your Body and Performance

Muscle Recovery and Performance

One of the most notable benefits of glutamine is its ability to enhance muscle recovery following strenuous workouts. By replenishing depleted levels of this amino acid, athletes may experience less soreness and improved performance in subsequent training sessions. This is particularly beneficial for those engaging in high-volume training or endurance sports.

Supporting Immune Health

Glutamine also plays a role in supporting our immune system. During times of physical stress, such as intense exercise, levels of glutamine can drop significantly, which may compromise immune function. Supplementing with glutamine can help maintain these levels, potentially reducing the risk of illness and promoting overall health.

Gut Health Improvement

Another area where glutamine contributes is digestive health. It helps maintain the integrity of the gut lining, which can prevent leaky gut syndrome. By supporting the cells that line your intestines, this amino acid aids digestion and nutrient absorption, making it an important factor for overall well-being.

Choosing the Right Glutamine Supplement: Key Factors to Consider

Types of Glutamine Supplements

When selecting a glutamine supplement, we find several forms available on the market, including powder, capsules, and tablets. Powdered forms can be easily mixed with drinks and are often favoured for their flexibility in dosage. Capsules and tablets might be more convenient for on-the-go use, so consider what fits seamlessly into your routine.

Consider the Purity and Ingredients

It’s essential to check the ingredient list and look for pure L-Glutamine without added fillers or unnecessary ingredients. Quality matters, so opt for reputable brands that source their ingredients responsibly, ensuring you get a product that delivers genuine benefits.

Dosage Recommendations

Dosage can vary based on individual needs and fitness goals, but a common range is between 5 to 10 grams per day. If you are just starting with supplementation, beginning with a lower dose can help your body adjust. Always consult with a health professional for tailored advice.

How to Incorporate Glutamine into Your Daily Routine for Optimal Results

Timing Your Intake

To maximise the benefits of glutamine, consider taking it shortly after exercise when your muscles are primed for recovery. Alternatively, some individuals find taking it before bedtime beneficial, as it may enhance overnight recovery and growth hormone release.

Mixing Glutamine into Your Diet

Integrating glutamine into your diet can be straightforward. We can add glutamine powder to smoothies, shakes, or post-workout drinks. This not only enhances the flavour but also ensures you’re receiving its benefits without much fuss. Additionally, glutamine is present in foods like beef, chicken, fish, eggs, dairy products, and some plant-based sources, so including these in your meals can be helpful.

Monitoring Your Progress

As with any supplement, tracking your response is vital. Pay attention to how you feel in terms of recovery, energy levels, and overall health. This will help you evaluate whether glutamine is a beneficial addition to your routine. Keeping a journal can help you log your experiences and make adjustments as needed.

Table of contents
  1. What is Glutamine? Understanding the Basics of This Vital Nutrient
  2. Benefits of Glutamine: How It Supports Your Body and Performance
  3. Choosing the Right Glutamine Supplement: Key Factors to Consider
  4. How to Incorporate Glutamine into Your Daily Routine for Optimal Results

Overview

1. Comparison winner
Optimum Nutrition Glutamine Powder 630g
Our rating
9,6
very good
Optimum Nutrition Glutamine Powder 630gAvailable immediately
2. Best value
Lamberts L-Glutamine Powder 500g
Our rating
9,6
very good
Lamberts L-Glutamine Powder 500gAvailable immediately
BioTechUSA L-Glutamine 500g
Our rating
9,6
very good
BioTechUSA L-Glutamine 500gAvailable immediately
Reflex Nutrition L-Glutamine Supplement 500g
Our rating
9,6
very good
Reflex Nutrition L-Glutamine Supplement 500gAvailable immediately
5. Bestseller
Pure L-Glutamine Powder, 500g
Our rating
9,5
very good
Pure L-Glutamine Powder, 500gAvailable immediately
Pure Encapsulations L-Glutamine Capsules, 850mg, 90 Pack
Our rating
9,5
very good
Pure Encapsulations L-Glutamine Capsules, 850mg, 90 PackAvailable immediately
Glutamine 120 Capsules
Our rating
9,4
good
Glutamine 120 CapsulesAvailable immediately
MuscleTech Platinum Glutamine Powder 300g
Our rating
9,3
good
MuscleTech Platinum Glutamine Powder 300gAvailable immediately
Our product comparisons are:
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At most every 120 days, we update each category with new products and research developments in the top rankings. This ensures that our recommendations are always up to date
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Our tests and comparisons are objective and fact-based. Manufacturers have no influence on the ratings. We aim to provide greater transparency in the market, thereby promoting product quality.
Method-driven
In our tests & comparison tables, we only include products that meet our minimum standards. This ensures that you can find the perfect product for your needs from a wide selection.
Similar tests and comparisons - Amino Acids