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Brand owned by Glanbia (Ireland) · about the brand
Glutamine Powder Unflavoured
Decode Label Safety Score
Decode Label Safety Badge
Held by the top 12% of everything we score. Awarded on this product's published 7.5/10 — every scoring lane clear, no significant concern, and nothing on the label that its own ingredient list contradicts.
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Methodology v3.1 (updated 8 Oct 2026) — what changed
This product is a straightforward L-Glutamine supplement, providing 100% L-Glutamine with no other ingredients. L-Glutamine is generally well-tolerated and widely used in sports nutrition for muscle recovery and immune support. The product's strength lies in its simplicity and purity, making it suitable for individuals seeking a single-ingredient glutamine supplement. However, as with any supplement, individuals with pre-existing medical conditions, particularly kidney or liver issues, should consult a healthcare professional before use. The absence of independent third-party testing for banned substances or purity means that while the ingredient itself is benign, consumers in competitive sports should exercise caution or seek products with such certifications.
At a glance
From the declared label — not a lab testFindings to weigh
What’s favorable
- L-Glutamine
Pure L-Glutamine supplement, generally well-tolerated for adults.
This supplement contains 100% L-Glutamine, an amino acid often used for muscle recovery and immune support. It is a simple, single-ingredient product with no added fillers or artificial ingredients. While L-Glutamine is generally safe for healthy adults, those with specific health conditions should consult a doctor. The label does not indicate independent third-party testing for purity or banned substances, which may be a consideration for competitive athletes.
Concern breakdown
Score out of 10 · higher = fewer concernsHow this product performs on each concern we check for supplement. This is a breakdown of the same evidence behind the score above — not a separate verdict.
Other audiences
AvoidThis is an adult sports-nutrition supplement (amino acids for training). Packs of this kind state that they are not recommended for children, or for pregnant or lactating women.
Why the score is capped
Sold for sport, but the label names no independent banned-substance or purity test (Informed Sport, NSF Certified for Sport). A brand's own "tested" statement is not a certificate
Rule S-CAP-02 · Source: Absence of a named certification on the label we hold; not a finding that the product is contaminated
What's good
Single ingredient formulation, free from fillers and artificial additives
Provides 100% L-Glutamine, a beneficial amino acid for recovery and immune function
Watch out for
Individuals with pre-existing kidney or liver conditions should consult a healthcare professional before using L-Glutamine supplements.
Lack of independent third-party certification for banned substances may be a concern for competitive athletes.
Decode Label Analysis
The product label does not specify independent third-party testing for banned substances or purity (e.g., Informed Sport, NSF Certified for Sport). While the ingredient itself is not a banned substance, competitive athletes should be aware of this for compliance.
Claim check
Front-of-pack marketing claims checked against this product's actual ingredients and nutrition. "Can't verify" means the label does not provide enough information to check the claim — it is not the same as the claim being false.
The label does not provide information to verify how easily the powder mixes.
The label does not provide information to verify if the product is specifically for healthy adults.
The label does not provide information to verify its classification as a health supplement.
Authenticity is a claim that cannot be verified from the ingredient list or nutrition facts.
The ingredient list confirms the product contains L-Glutamine (100%), which is a form of glutamine powder.
The nutrition information states that a serving size of 5g contains 5g of L-Glutamine.
L-Glutamine is an amino acid, so the product provides amino acid support.
The ingredient list contains only L-Glutamine (100%), with no added flavorings.
The net weight is 250g and the serving size is 5g, which calculates to 50 servings (250g / 5g = 50).
Read straight from the back-of-pack photo — quantities, sections and any disguised terms, so the small print can’t hide behind the marketing.
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1.
L-Glutamine 100%L-Glutamine (100%).
In label order — normally largest quantity first. Select a row for the full write-up and sources.
✓ Decode Label Assessment: Favorable ⚠ Decode Label Assessment: Concern Decode Label Assessment: Neutral
Who should take caution
About this ingredient
Declared on this label as
No detailed safety data in our database yet for this ingredient.
Learn More
| Energy | 0 kcal |
| Protein | 0 g |
| Carbohydrate | 0 g |
| Total Sugars | 0 g |
| Added Sugars | 0 g |
| Total Fat | 0 g |
| Sodium | 0 mg |
| Cholesterol | 0 mg |
| L-Glutamine | 100 g |
Colour shows the per-100g level (green = low, amber = moderate, red = high), from the product's label.
Compare with other amino acids products
Assessed using the same Decode Label methodology, sorted by score. Each score reflects the information available for that product at the time of assessment.
What are the ingredients in Glutamine Powder Unflavoured?
The label of Glutamine Powder Unflavoured lists 1 ingredient, in label order: L-Glutamine. None of them is flagged by the analysis.
Is Glutamine Powder Unflavoured safe to eat?
Glutamine Powder Unflavoured scores 7.5/10 on Decode Label (Favorable). This supplement contains 100% L-Glutamine, an amino acid often used for muscle recovery and immune support. It is a simple, single-ingredient product with no added fillers or artificial ingredients. While L-Glutamine is generally safe for healthy adults, those with specific health conditions should consult a doctor. The label does not indicate independent third-party testing for purity or banned substances, which may be a consideration for competitive athletes.
Why does Glutamine Powder Unflavoured score 7.5/10?
What the analysis notes: Individuals with pre-existing kidney or liver conditions should consult a healthcare professional before using L-Glutamine supplements. Lack of independent third-party certification for banned substances may be a concern for competitive athletes.
Who should avoid Glutamine Powder Unflavoured?
The points the analysis notes are most relevant to: Kidney or liver conditions (consult a doctor); Competitive athletes requiring third-party banned substance testing.
How much sugar is in Glutamine Powder Unflavoured?
0 g of total sugar per 100 g. The label declares 0 g of that as added sugar per 100 g.
Are the claims on the Glutamine Powder Unflavoured pack accurate?
Decode Label checked 9 claims against the ingredient list and nutrition panel. "MIXES EASILY" — can't be verified from the label. "L-GLUTAMINE POWDER FOR HEALTHY ADULTS" — can't be verified from the label. "HEALTH SUPPLEMENT" — can't be verified from the label.
Is Glutamine Powder Unflavoured vegetarian?
Glutamine Powder Unflavoured is marked vegetarian, and contains no animal-derived ingredients.
Answers are generated from this product's own Decode Label analysis — the score, the ingredient list and the label claims shown above. Always check the pack itself for allergen and dietary information.
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Recipes change and packs get reformulated. If the ingredients or the panel on the pack in your hand differ from what we show, tell us and we will check it.
About this analysis: Based on declared label information and available evidence. Decode Label does not independently laboratory-test products, and a score is not a regulatory determination or medical advice.
Disclaimer: Safety scores are Decode Label-generated assessments based on publicly available regulatory data (FSSAI, WHO, EFSA, IARC) and peer-reviewed research. They are not a substitute for professional medical advice, and they are not a regulatory determination, a laboratory safety certification or a medical diagnosis. Ingredient safety can vary by individual health conditions, concentration, and usage context. Decode Label is an independent information service and scores every brand by the same rules. No brand pays for or influences its score. Our founder also founded the personal-care brand Botani Bestie (see our story); its products are scored exactly like everyone else's. Data limitations: This assessment is based on the information declared on the product label and the evidence sources above — Decode Label does not independently laboratory-test this product. Ingredient concentrations, sourcing and manufacturing can vary between batches and are not always disclosed. A finding that is not shown here means it was not identified from the available label information, not that it has been ruled out.
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