Food additive · Sweetener

Sucralose

E-number
E955
CAS
56038-13-2

A chlorinated high-intensity sweetener about 600 times sweeter than sugar, used in diet drinks, protein products and baked goods.

  • Food additive
  • Non-nutritive sweetener
  • Ultra-processing marker
  • Expert review pending

Concern level

Moderate concern Level 2 of 4 How concern levels work

Strong evidence of harm at high intake, emerging evidence of harm, or a common allergen or irritant. The concern level sets how many points sucralose costs on a product’s receipt.

What the evidence says

  • Gut microbiome (emerging)Emerging evidence

    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]

  • Low concernStrong evidence

    EFSA (2026) concluded sucralose remains safe at currently authorized uses (ADI 15 mg/kg body weight) but could not confirm safety for use in baking at high temperatures. [3]

  • Heart or metabolic health (emerging)Emerging evidence

    WHO (2023) recommends against using non-sugar sweeteners to control body weight (conditional recommendation); US dietary guidelines advise limiting them. [4][5]

Evidence tiers say how sure the evidence is, separately from how much it matters. About evidence tiers.

Rules around the world

How regulators treat Sucralose
WhereStatusDetailsDateSource
United States Permitted Permitted as a sweetener (21 CFR 172.831). — [6]
European Union Permitted Permitted (E 955); re-evaluated by EFSA in 2026. — [3]
Canada Permitted On Health Canada's List of Permitted Sweeteners. — [7]

“Banned” means explicitly prohibited or withdrawn after review; “not permitted” means never authorized there. We use each regulator’s own words.

Popular products that list sucralose

772 of the 17,000 most-scanned products in the US with a GoodSwap page list sucralose. The 12 most scanned:

Diets and allergens

Vegan
Yes
Vegetarian
Yes
Gluten-free
Yes

For the ingredient in general. Always check the package: a product’s own labels win.

Names GoodSwap recognizes on labels (19)
  • e955
  • splenda
  • sucralose
  • sweetener e955
  • sucralose sweetener
  • sweetener sucralose
  • sucralose edulcorant
  • sucralose sweeteners
  • sweeteners sucralose
  • sucralose and acesulfame k
  • sucralose acesulfame potassium
  • sucralose artificial sweetener
  • sucralose a non caloric sweetener
  • sucralose an artificial sweetener
  • sucralose non nutritive sweetener
  • sucralose and acesulfame potassium
  • sucralose non nutritive sweeteners
  • sucralose a non nutritive sweetener
  • sweeteners sucralose and acesulfame k

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. 21 CFR 172.831 Sucralose

    Electronic Code of Federal Regulations (eCFR), U.S. Office of the Federal Register · Mar 24, 2023 · Law

    ecfr.gov

  7. 9. List of Permitted Sweeteners (Lists of Permitted Food Additives)

    Health Canada · Feb 25, 2025 · Regulator

    “A.3 Aspartame n/a (a) Breakfast cereals (a) Sweetener (a) 5,000 ppm n/a”

    canada.ca