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Fulfil Protein Bar
Photo: Open Food Facts contributors (CC BY-SA)

Protein bars

Fulfil Protein Bar

4 × 40 g

Excellent out of 100 High confidence
  • Contains non-nutritive sweeteners
  • Contains sugar alcohols
  • Contains palm oil
  • Seed-oil free
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Why it scores 88

Fulfil Protein Bar scores 88 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. Protein blend (unspecified): An ingredient typical of ultra-processed foods (NOVA group 4). Info
  3. Milk 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

Protein Bar

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]
  • Protein blend (unspecified)
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [6]
  • Milk protein concentrate / isolate
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [6]
  • Whey protein concentrate / isolate
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [6]
  • Caseinate
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [6]
  • Collagen
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [6]
  • Glycerin
    Info An additive class typical of ultra-processed foods (NOVA group 4). [6]
  • Palm kernel oil
    Strong About half saturated fat; WHO recommends keeping saturated fat to 10% of energy or less. [7][8][9]
  • Maltitol
    Regulatory Large amounts can have a laxative effect; the EU requires a label statement above 10% added polyols and the US for some polyols above set intakes. [10][11]
  • Soy protein isolate / concentrate
    Info An ingredient typical of ultra-processed foods (NOVA group 4). [6]
  • 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. [12][6]
  • Soluble corn fiber (resistant dextrin)
    Info An additive class typical of ultra-processed foods (NOVA group 4). [6]
  • Soy lecithin
    Info An additive class typical of ultra-processed foods (NOVA group 4). [6]
subtotal−12
TOTAL 88Excellent

100 − 12 = 88

GTIN 00851724008489 · 2026-02-26

score v1.3.0 · kb 2026.10.11

High confidence

Same product, same score. Every time.

Nutrition per 100 g

Energy400 kcal
Fat15 g
Saturated fat12.5 g
Trans fat0 g
Carbohydrates35 g
Sugars2.5 g
Added sugars0 g
Fiber0 g
Protein37.5 g
Salt1.3 g

Serving: 40g

Ingredients

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

PROTEIN BLEND (MILK PROTEIN ISOLATE, WHEY PROTEIN ISOLATE, HYDROLYZED WHEY PROTEIN CONCENTRATE, CALCIUM CASEINATE), HYDROLYZED COLLAGEN, GLYCERIN, PALM KERNEL OIL, MALTITOL, MALTITOL SYRUP, WATER, MILK, SOY PROTEIN ISOLATE, COCOA PROCESSED WITH ALKALI, WHEY PROTEIN ISOLATE, RICE FLOUR, ANHYDROUS MILK FAT, COCOA, NATURAL FLAVORS, NONFAT MILK, POLYDEXTROSE, SALT, SOLUBLE CORN FIBER, SOY LECITHIN, SUCRALOSE, VITAMIN BLEND (ASCORBIC ACID VITAMIN C, NIACINAMIDE (VITAMIN B3], ALPHA-TOCOPHEROL ACETATE VITAMIN E, RIBOFLAVIN [VITAMIN B2], PYRIDOXINE HYDROCHLORIDE [VITAMIN B6], THIAMINE MONONITRATE [VITAMIN B1], VITAMIN A PALMITATE, CYANOCOBALAMIN VITAMIN B12]).

Allergens and diets

Contains: Milk, Soy

  • Not vegan
  • Not vegetarian
  • Not palm-oil-free

Always check the package: recipes change.

Healthiest protein bars in the US

More from Fulfil

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

    Public Health Nutrition · April 2019 · Peer-reviewed

    doi.org

  7. Saturated fatty acid and trans-fatty acid intake for adults and children: WHO guideline

    World Health Organization · Jul 17, 2023 · Agency assessment

    “WHO recommends that adults and children reduce saturated fatty acid intake to 10% of total energy intake (strong recommendation).”

    who.int

  8. Process contaminants in vegetable oils and foods

    European Food Safety Authority · May 3, 2016 · Agency assessment

    “The highest levels of GE, as well as 3-MCPD and 2-MCPD (including esters) were found in palm oils and palm fats, followed by other oils and fats.”

    efsa.europa.eu

  9. Commission Regulation (EU) 2023/915 of 25 April 2023 on maximum levels for certain contaminants in food

    European Union (Official Journal) · Apr 25, 2023 · Law

    “Glycidyl fatty acid esters, expressed as glycidol”

    eur-lex.europa.eu

  10. Regulation (EU) No 1169/2011, Annex III point 2.4 (foods with more than 10 % added polyols)

    European Union (Official Journal) · Oct 25, 2011 · Law

    “‘excessive consumption may produce laxative effects’.”

    eur-lex.europa.eu

  11. 21 CFR 184.1835 Sorbitol

    Electronic Code of Federal Regulations (eCFR), U.S. Office of the Federal Register · Nov 22, 2016 · Law

    ““Excess consumption may have a laxative effect.””

    ecfr.gov

  12. 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