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Kirkland Signature Whey Protein Creamy Chocolate
Photo: Open Food Facts contributors (CC BY-SA)

Protein powders

Kirkland Signature Whey Protein Creamy Chocolate

5.4 lb

Excellent out of 100 High confidence
  • Contains non-nutritive sweeteners
  • Contains seed oils
  • Contains whole grains
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Why it scores 86

Kirkland Signature Whey Protein Creamy Chocolate scores 86 out of 100 (Excellent) under GoodSwap’s published rules. What moved the score most:

  1. Sucralose: In a 2022 randomized study, sucralose and saccharin altered the gut microbiome and impaired glucose responses in some people; a 2023 lab study raised questions about its by-product sucralose-6-acetate. Strong
  2. Acesulfame potassium (Ace-K): In the NutriNet-Santé cohort, acesulfame-K intake was associated with higher cancer risk; cause and effect is not established. Strong
  3. Whey protein concentrate / isolate: An ingredient typical of ultra-processed foods (NOVA group 4). Info

Every line of the math is on The Receipt below, with its evidence tier and sources.

The Receipt

Whey Protein Creamy Chocolate

START100

Ingredients

  • Sucralose
    Strong In a 2022 randomized study, sucralose and saccharin altered the gut microbiome and impaired glucose responses in some people; a 2023 lab study raised questions about its by-product sucralose-6-acetate. [1][2][3][4][5]
  • Acesulfame potassium (Ace-K)
    Strong In the NutriNet-Santé cohort, acesulfame-K intake was associated with higher cancer risk; cause and effect is not established. [6][7][4][5]
  • Whey protein concentrate / isolate
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [8]
  • Gum arabic (acacia)
    Info An ingredient class typical of ultra-processed foods (NOVA group 4). [8]
  • Sunflower oil
    Emerging High in omega-6 linoleic acid. [9][10][11][12]
  • Sunflower lecithin
    Info An additive class typical of ultra-processed foods (NOVA group 4). [8]
  • Natural flavors
    Info "Natural flavor" is a legal category (21 CFR 101.22(a)(3)): flavor substances from spices, fruits, vegetables, meat, dairy or fermentation. [13][8]
  • Dextrin
    Info An additive class typical of ultra-processed foods (NOVA group 4). [8]
  • Guar gum
    Info An ingredient class typical of ultra-processed foods (NOVA group 4). [8]
  • Xanthan gum
    Info An ingredient class typical of ultra-processed foods (NOVA group 4). [8]
subtotal−14.5
TOTAL 86Excellent

100 − 14.5 = 85.5 → 86

GTIN 00196633918901 · 2026-09-17

score v1.3.0 · kb 2026.10.11

High confidence

Same product, same score. Every time.

Nutrition per 100 g

Energy371 kcal
Fat5.7 g
Saturated fat2.9 g
Carbohydrates11.4 g
Sugars2.9 g
Added sugars0 g
Fiber2.9 g
Protein71.4 g
Salt1.2 g

Serving: 1 scoop (35 g)

Ingredients

High Moderate Not recognized Tap an ingredient for its evidence and rules.
Label text, as published

WHEY PROTEIN ISOLATE, WHEY PROTEIN CONCENTRATE, ALKALIZED COCOA, Acacia, WHEY PROTEIN HYDROLYSATE, OAT BRAN FIBER, ORGANIC HIGH OLEIC SUNFLOWER OIL, ORGANIC SUNFLOWER LECITHIN, SEA SALT, NATURAL FLAVORS, ORGANIC RICE DEXTRIN, ORGANIC ROSEMARY EXTRACT, ORGANIC GUAR GUM, SUCRALOSE, ACESULFAME POTASSIUM, XANTHAN GUM, CONTAINS: MILK.

Allergens and diets

Contains: Milk, Gluten

  • Not vegan
  • Not gluten-free
  • Palm-oil-free

Always check the package: recipes change.

Packaging

Multi Layered

Context only: no points in v1.

Healthiest protein powders in the US

More from Kirkland Signature

Sources

  1. Personalized microbiome-driven effects of non-nutritive sweeteners on human glucose tolerance

    Cell · September 2022 · Peer-reviewed

    “As groups, each administered NNS distinctly altered stool and oral microbiome and plasma metabolome, whereas saccharin and sucralose significantly impaired glycemic responses.”

    doi.org

  2. Toxicological and pharmacokinetic properties of sucralose-6-acetate and its parent sucralose: in vitro screening assays

    Journal of Toxicology and Environmental Health, Part B · Aug 18, 2023 · Peer-reviewed

    “Sucralose-6-acetate significantly increased the expression of genes associated with inflammation, oxidative stress, and cancer”

    doi.org

  3. EFSA finds sucralose safe when used as currently authorised; cannot confirm safety of extending its use

    European Food Safety Authority · Feb 17, 2026 · Agency assessment

    “EFSA’s experts concluded that the sweetener sucralose (E 955) continues to be safe for consumers for its currently authorised uses as a food additive.”

    efsa.europa.eu

  4. WHO advises not to use non-sugar sweeteners for weight control in newly released guideline

    World Health Organization · May 15, 2023 · Agency assessment

    “The recommendation is based on the findings of a systematic review of the available evidence which suggests that use of NSS does not confer any long-term benefit in reducing body fat in adults or children.”

    who.int

  5. Dietary Guidelines for Americans, 2025–2030

    U.S. Department of Health and Human Services and U.S. Department of Agriculture · January 2026 · Regulator

    “Limit foods and beverages that include artificial flavors, petroleum-based dyes, artificial preservatives, and low-calorie non-nutritive sweeteners.”

    cdn.realfood.gov

  6. Artificial sweeteners and cancer risk: Results from the NutriNet-Santé population-based cohort study

    PLOS Medicine · Mar 24, 2022 · Peer-reviewed

    “In this large cohort study, artificial sweeteners (especially aspartame and acesulfame-K), which are used in many food and beverage brands worldwide, were associated with increased cancer risk.”

    doi.org

  7. Re-evaluation of acesulfame K (E 950) as food additive (plain language summary)

    European Food Safety Authority · Apr 30, 2025 · Agency assessment

    “The acceptable daily intake (ADI) considered safe for all population groups was set at 15 mg/kg body weight (bw) per day.”

    efsa.europa.eu

  8. Ultra-processed foods: what they are and how to identify them

    Public Health Nutrition · April 2019 · Peer-reviewed

    doi.org

  9. Re-evaluation of the traditional diet-heart hypothesis: analysis of recovered data from Minnesota Coronary Experiment (1968-73)

    BMJ · Apr 12, 2016 · Peer-reviewed

    “replacement of saturated fat in the diet with linoleic acid effectively lowers serum cholesterol but does not support the hypothesis that this translates to a lower risk of death from coronary heart disease or all causes.”

    doi.org

  10. Use of dietary linoleic acid for secondary prevention of coronary heart disease and death: evaluation of recovered data from the Sydney Diet Heart Study and updated meta-analysis

    BMJ · Feb 4, 2013 · Peer-reviewed

    doi.org

  11. Dietary Linoleic Acid and Risk of Coronary Heart Disease: A Systematic Review and Meta-Analysis of Prospective Cohort Studies

    Circulation · Oct 28, 2014 · Peer-reviewed

    “These data provide support for current recommendations to replace saturated fat with polyunsaturated fat for primary prevention of CHD.”

    doi.org

  12. Dietary Fats and Cardiovascular Disease: A Presidential Advisory From the American Heart Association

    Circulation · Jul 18, 2017 · Peer-reviewed

    doi.org

  13. 21 CFR 101.22 Foods; labeling of spices, flavorings, colorings and chemical preservatives

    Electronic Code of Federal Regulations (eCFR), U.S. Office of the Federal Register · Dec 19, 2016 · Law

    “whose significant function in food is flavoring rather than nutritional.”

    ecfr.gov