
Doctor's Best L-Glutamine Powder 300 g
Pure L-glutamine powder from Doctor's Best in a flexible 300g pack – easy to dose and mix as needed.
Inc. VAT·Earn 293 points
Buying help
- Per serving
- 5 g L-Glutamin
Stock figures are indicative — supply may run out quickly, we can't guarantee availability
Quick facts · per daily dose
Active ingredient
5 g
L-Glutamin
Description
Product Overview
Doctor's Best L-Glutamine Powder is a pure, concentrated supplement providing the amino acid L-glutamine in free-form powder. The pack contains 300 grams, offering flexibility and the option to adjust the dosage to suit your needs. The product is made by Doctor's Best, a well-regarded brand that has long focused on providing nutritional supplements with clear quality standards and transparent ingredient lists. Its philosophy is based on offering pure, effective and scientifically based products without unnecessary additives. L-glutamine powder is particularly valued for its pure composition and user-friendly form, making it easy to mix into drinks, shakes or other blends for daily use.
Active Ingredients & Science
The active ingredient in this supplement is free-form L-glutamine, an amino acid that dissolves readily and can be quickly absorbed by the body. As the L-glutamine in this product is not bound to proteins or peptides, it allows for convenient absorption and flexible use. L-glutamine is one of the most common free amino acids in the body and plays a role in several physiological processes, including acting as a nitrogen carrier and as a precursor to important molecules. The product contains no added flavours or fillers, giving you a pure, straightforward source of this amino acid.
Benefits & Uses
- Flexible dosage: The powder lets you choose the amount and adjust your intake to your personal needs.
- Pure ingredient: Contains only L-glutamine, with no additives, making it suitable if you want a minimal supplement.
- Easy to mix: The powder is easy to mix into water, juice or your own nutritional shakes.
- Practical for active people: Suitable for people who exercise or have an increased need for amino acids in their daily lives.
- Compatible with other supplements: As the product is free from flavours and fillers, it can be combined with other supplements without affecting their taste or composition.
Use & Dosage
The recommended dosage is 5 grams of L-glutamine per serving, equivalent to one scoop of powder. The powder can be taken at any time of day, with or without food, depending on your routine and needs. For best dissolution, mix the powder into water or another drink of your choice. Many people choose to take it after exercise or at other times when they want to ensure a steady intake of amino acids. The product can also be combined with other amino acids or protein supplements for a broader nutritional profile.
Quality & Manufacturing
Doctor's Best is known for maintaining high production standards and follows strict manufacturing practices. Its products undergo rigorous purity testing to ensure that no unwanted substances remain. The L-glutamine powder is made without added flavourings, colourings or fillers, reflecting the company's focus on purity and simplicity.
Who Is This Product For?
This L-glutamine powder is suitable if you are looking for a pure and flexible amino acid supplement, whether you are an active athlete, a recreational exerciser or simply want to supplement your daily diet. It is also suitable if you want to control what you consume and avoid unnecessary additives. The product can be used by adults of different ages, but should be avoided during pregnancy or breastfeeding unless you have consulted a doctor. As no allergens are listed in the ingredients, it is a safe choice for most people, but if in doubt, an individual assessment is always recommended.
Summary
Doctor's Best L-Glutamine Powder offers a simple, pure way to provide the body with free-form L-glutamine. With its high quality, flexible dosage and lack of additives, it is a clear choice if you want control and purity in your amino acid supplement. Whether you are active, want to supplement your diet or have specific L-glutamine needs, this product provides a reliable, easy-to-use solution from a well-known brand.
Contents & Nutrition
Nutrition declaration
Per EU regulation 1169/2011
Recommended daily dose
Adult use: Mix 1 scoop (approximately 5g) in 240ml of juice or protein shake and stir well. For best results, drink 1 hour before exercise. Repeat after exercise or before sleep, or as recommended by a healthcare professional knowledgeable in nutrition.
| Ingredient | Amount per dose | NRV% |
|---|---|---|
| L-Glutamin | 5 g | † |
Content per daily dose
*NRV = Nutrient Reference Value according to EU Regulation 1169/2011
† NRV not established
* NRV = Nutrient Reference Value per EU regulation 1169/2011 · † Daily reference value not established
Do not exceed the recommended dose. Supplements do not replace a varied diet and should be kept out of reach of children. Pregnant, breastfeeding, or individuals with liver disease should avoid the product or consult a doctor; individuals sensitive to monosodium glutamate (MSG) may also react to glutamine, and long-term use should be discussed regarding possible B-vitamin supplementation.
Do not exceed the recommended daily dose. Dietary supplements should not be used as a substitute for a varied diet. Keep out of reach of young children.
The ingredient list may vary by product variant. Always check the packaging.
FAQ
Frequently asked questions about Doctor's Best L-Glutamine Powder 300 g
What does L-Glutamine Powder from Doctor's Best contain?
How much glutamine is in each dose?
Is the L-glutamine vegan?
What are the benefits of L-glutamine for exercise?
Is Doctor's Best L-Glutamine Powder suitable for people with gluten sensitivity?
How do you take L-Glutamine Powder?
Can L-glutamine be combined with other amino acids?
What ingredients are in Doctor's Best L-Glutamine Powder?
Is L-Glutamine Powder suitable for muscle building?
Price history
Lowest price last 30 days: €27.00
| Price history | Lowest |
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| 2026-10-09 | €28.00 |
| 2026-10-10 | €28.00 |
| 2026-10-11 | €28.00 |
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| 2026-11-03 | €27.00 |
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| 2026-11-07 | €27.00 |
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Product facts
Do not exceed the recommended dose. Supplements do not replace a varied diet and should be kept out of reach of children. Pregnant, breastfeeding, or individuals with liver disease should avoid the product or consult a doctor; individuals sensitive to monosodium glutamate (MSG) may also react to glutamine, and long-term use should be discussed regarding possible B-vitamin supplementation. Do not exceed the recommended daily dose. Dietary supplements should not be used as a substitute for a varied diet. Keep out of reach of young children.
Ingredient guide
Read more about the active ingredients and compare every product that contains them.
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Doctor's Best - L-Glutamine Powder - 300 g
€27.00