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Brand owned by Glanbia (Ireland) · about the brand
Gold Standard 100% Whey
Decode Label Safety Score
How we got 5.5 ShowHide
Reviewed 6 times · Methodology v3.1 (updated 8 Oct 2026) — what changed
This protein supplement provides a blend of whey proteins for muscle support, but its use of undisclosed 'Flavors' and the artificial sweetener Acesulfame Potassium are notable concerns. While generally safe for healthy adults, individuals sensitive to artificial sweeteners or those seeking full ingredient transparency may wish to consider alternatives. The product is designed for adult sports nutrition and is not suitable for children.
At a glance
From the declared label — not a lab testFindings to weigh
What’s favorable
- Whey Protein Isolate
- Whey Protein Concentrate
- Hydrolysed Whey Protein
- Lecithin
- Cocoa powder
Whey Protein Blend with Undisclosed Flavors and Artificial Sweetener
This protein powder offers a mix of whey proteins, beneficial for muscle recovery and growth. However, it contains 'Flavors' without specific disclosure, which can be a concern for those with sensitivities or allergies. It also includes Acesulfame Potassium, an artificial sweetener that some individuals prefer to avoid.
Declared allergens: Milk
Relevant if you have this allergy or intolerance.
Based on the declared ingredient list. This is a risk only to people with the allergy, not a general-population safety issue, so it does not lower the safety score.
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.
1 concern could not be assessed from this label. That means we don't know — not that there's nothing to find.
Other audiences
AvoidThis is an adult sports-nutrition supplement, formulated for adults for exercise and training. It is not intended for infants or young children.
Why the score is capped
Flavors not disclosed — the label does not say which substance this is
Rule F-CAP-13
Contains an intense artificial sweetener (acesulfame). Sweeteners are judged by name, and a protein powder is not exempt
Rule S-CAP-01 · Source: Declared ingredient list; EFSA and JECFA acceptable-daily-intake reviews of the named sweetener
What's good
Contains a blend of high-quality whey proteins (isolate, concentrate, hydrolysed) for comprehensive muscle support and recovery.
Whey protein isolate and hydrolysed whey offer rapid absorption and are lower in lactose, suitable for many with mild lactose sensitivity.
Cocoa powder provides natural flavor and antioxidants.
Watch out for
Undisclosed 'Flavors' can be problematic for those with specific allergies or sensitivities, as the exact components are not listed.
Contains Acesulfame Potassium, an artificial sweetener that some consumers choose to limit or avoid due to ongoing health discussions.
Decode Label Analysis
The ingredient 'Flavors' is not specifically disclosed, which can be a concern for individuals with sensitivities or allergies to specific flavoring compounds. Full transparency on flavor ingredients is preferred.
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 on the BCAA content.
The provided label data does not include information about banned substance testing.
The ingredients list Whey Protein Isolate, Whey Protein Concentrate, and Hydrolysed Whey Protein as the primary protein sources.
The product contains 24g of protein per serving, which supports muscle growth and recovery.
Each serving provides 24g of protein.
The product contains 24g of protein per serving, which is essential for building and maintaining muscle.
The product contains 24g of protein per serving, which supports recovery and can contribute to endurance.
The ingredients list only whey protein sources (Whey Protein Isolate, Whey Protein Concentrate, Hydrolysed Whey Protein) as protein sources.
Whey Protein Isolate is listed as the first ingredient, indicating it is the primary source.
In label order — normally largest quantity first. Select a row for the full write-up and sources.
These are major food allergens named on the ingredient list. They are a risk only to people allergic to them — not a general-population safety issue — so they do not lower the safety score. Anyone with the allergy should avoid this product, and check the pack’s own allergen statement.
✓ Decode Label Assessment: Favorable ⚠ Decode Label Assessment: Concern Decode Label Assessment: Neutral
Who should take caution
About this ingredient
No detailed safety data in our database yet for this ingredient.
Learn More
| Energy | 383 kcal |
| Protein | 79 g |
| Carbohydrate | 10 g |
| Total Sugars | 3 g |
| Added Sugars | 0 g |
| Total Fat | 3 g |
| Saturated Fat | 2 g |
| Trans Fat | 0 g |
| Sodium | 164 mg |
Colour shows the per-100g level (green = low, amber = moderate, red = high), from the product's label.
Compare with other protein supplement 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.
Gold Standard 100% Whey Unflavoured
7.5OPTIMUM NUTRITION.
Nutrabay Pure Pea Protein Isolate - 25.3g Protein, 5g BCAA
7.5Nutrabay
OZiva Protein & Herbs for Women (Chocolate)
7.5OZiva
Protinex Lite Zero Added Suger Vanilla Flaour
6.5Protinex
Optimum Nutrition (ON) Gold Standard 100%
6.0Optimum Nutrition
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What are the ingredients in Gold Standard 100% Whey?
The label of Gold Standard 100% Whey lists 7 ingredients, in label order: Whey Protein Isolate, Whey Protein Concentrate, Hydrolysed Whey Protein, Lecithin, Cocoa powder, Flavors, Acesulfame Potassium. Flagged by the analysis: Acesulfame Potassium.
Is Gold Standard 100% Whey safe to eat?
Gold Standard 100% Whey scores 5.5/10 on Decode Label (Moderate). This protein powder offers a mix of whey proteins, beneficial for muscle recovery and growth. However, it contains 'Flavors' without specific disclosure, which can be a concern for those with sensitivities or allergies. It also includes Acesulfame Potassium, an artificial sweetener that some individuals prefer to avoid.
Why does Gold Standard 100% Whey score 5.5/10?
Flagged in the score: Contains Acesulfame Potassium, an artificial sweetener that some consumers choose to limit or avoid due to ongoing health discussions. Also noted: Undisclosed 'Flavors' can be problematic for those with specific allergies or sensitivities, as the exact components are not listed.
Who should avoid Gold Standard 100% Whey?
The points the analysis notes are most relevant to: Sensitive to artificial sweeteners; Fragrance/flavor allergies; Seeking full ingredient transparency; Milk allergy / lactose intolerance.
Does Gold Standard 100% Whey contain allergens?
Yes — the ingredient list contains milk (Whey Protein Isolate, Whey Protein Concentrate and Hydrolysed Whey Protein). Check the allergen statement on the pack too if you have a diagnosed allergy.
Does Gold Standard 100% Whey contain milk?
Yes — the ingredient list names Whey Protein Isolate, Whey Protein Concentrate and Hydrolysed Whey Protein. People with milk allergy / lactose intolerance should treat it as containing milk, and check the allergen statement on the pack too.
How much sugar is in Gold Standard 100% Whey?
3 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 Gold Standard 100% Whey pack accurate?
Decode Label checked 9 claims against the ingredient list and nutrition panel. "5.5g BCAAs" — can't be verified from the label. "BANNED SUBSTANCE TESTED" — can't be verified from the label.
Is Gold Standard 100% Whey vegetarian?
Gold Standard 100% Whey is marked vegetarian.
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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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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