Sucralose
Artificial sweetener
GastrointestinalUnclear/Controversial
Description
Sucralose is a zero-calorie sweetener used to make “diet” or “zero sugar” items taste sweet without adding sugar. In fast-food settings, it most often shows up in fountain diet sodas, “zero” branded drinks, flavored teas, and some sugar-free syrups or dessert-style drinks. FDA allows sucralose, and past intake modeling found even high consumers were generally below the U.S. acceptable daily intake level. Research on long-term health effects is still debated: short-term studies often show little immediate effect on blood sugar, while longer-term weight or gut effects are less clear.
Learn More Dossier
Aliases / Common Names: Sucralose, Splenda, E955, INS 955, 4,1’,6’-trichlorogalactosucrose, CAS 56038-13-2.
Regulatory Status & Exposure: FDA expanded sucralose to “sweetener in foods generally” under good manufacturing practice (only as much as needed for effect) and reaffirmed a U.S. ADI of 5 mg/kg body weight/day; it estimated high-consumer intake around 2.4 mg/kg/day at the time of the expansion. JECFA lists sucralose (INS 955) with an ADI of 0–15 mg/kg bw. EU sources summarize an ADI of 15 mg/kg bw/day for sucralose. In practical fast-food exposure, the biggest swings come from how many “diet/zero” beverages and sweetened drinks someone consumes per day.
Technical Evidence: A systematic review/network meta-analysis of non-nutritive sweetened beverages found no meaningful acute differences in postprandial glucose and endocrine responses versus water across several intake patterns, supporting the idea that immediate glycemic effects are usually small in controlled settings. Microbiome-focused reviews note that animal/in vitro findings can show dose- and time-dependent shifts, but most short-term human interventions using amounts below ADI report no significant gut microbiota changes; authors emphasize the need for longer and larger human studies and note possible baseline-microbiome-dependent responses. WHO’s guideline, weighing broader evidence (including observational data), recommends against using non-sugar sweeteners for weight control, reflecting uncertainty about long-term benefit/risk rather than an acute toxicity finding.
Fast-Food Context: For PRūF, sucralose is most relevant in beverages—fountain “diet” sodas, “zero sugar” soft drinks, sweetened iced teas, flavored waters, and some coffee/espresso add-ins (including sugar-free syrups or sweetened cream-style components), plus tabletop packets at self-serve beverage stations. Because beverages are a primary dietary source of non-nutritive sweeteners, frequent refills and large sizes can matter more than occasional use in a single sauce or dessert item. It is also commonly blended with other sweeteners in commercial drinks to better match sugar’s taste profile, which can make label scanning important for users trying to limit total non-sugar sweetener intake.
Sensitive Populations / Notes: People who consume multiple large “diet/zero” beverages daily (especially smaller-bodied teens) have the most plausible path to higher relative exposure versus typical consumers. For users with GI sensitivity, the gut-microbiome evidence in humans is not definitive, but the topic remains an active research area; short-term trials below ADI are often neutral, while longer-term effects are less certain.
Regulatory status
Canada
Allowed
Permitted sweetener in specified foods per Health Canada list-by-reference framework.
Basis: Other
Source
International
Allowed
International food additive standard-setting (category-based permissions/maximum levels).
Basis: Other
Source
European Union
Allowed
Food additive authorization and specifications (E-number system; category-specific permissions/maximum levels).
Basis: Efsa Opinion
Source
United States
Allowed
Direct food additive sweetener for foods where standards of identity do not preclude; GMP ('not to exceed that reasonably required to accomplish the intended technical effect').
Basis: 21 CFR 172.831
Effective: 1998-04-03
Source
Registry review date: 2026-03-02
State policy updates
California (US)
Provisional
School meals and competitive foods under phased timelines; implementation depends on regulations defining 'restricted school foods' and 'ultraprocessed foods of concern.'
Effective: 2025-10-08
Compliance: 2028-06-01
Source
US-LA
Restricted
Breakfasts, lunches, and aftercare foods/beverages served by schools; exception for concession stands and vending machines.
Source
Policy timeline
-
1998-04-03 — FDA final rule authorizing sucralose as nonnutritive sweetener in foods; ADI and EDI described
(United States)
-
1999-08-12 — FDA final rule amending regulations for general purpose sweetener use of sucralose
(United States)
-
2025-06-20 — Louisiana Act 463 (SB 14) enacted: school ingredient prohibitions and retail QR disclosure framework includes sucralose
(US-LA)
-
2028-01-01 — Louisiana R.S. 40:661 QR disclosure effective date
(US-LA)
-
2025-10-08 — California AB 1264 enacted (Real Food, Healthy Kids Act): sucralose named in UPF definition framework for schools
(California (US))
Research Evidence Snapshot
Regulatory toxicology reviews support safety under authorized uses and define ADIs. Human evidence for long-term cardiometabolic outcomes is heterogeneous and often observational; controversies (e.g., carcinogenicity claims from a single mouse bioassay; mechanistic concerns about sucralose-6-acetate) have not led to ADI reductions by major regulators as of 2026.
Critical endpoints: High-heat degradation chemistry uncertainty (home baking/frying); cardiometabolic outcomes (mixed observational evidence); microbiome-related hypotheses; carcinogenicity debate centered on a single disputed mouse study.
ACUTE SENSITIVITY HAZARD
Confidence: Medium
Low
No consistent evidence of acute hypersensitivity in regulator-reviewed dossiers; primary near-term issues reported are nonspecific intolerance patterns rather than classic allergic responses.
CHRONIC HEALTH EVIDENCE DIRECTION
Confidence: Medium
Mixed/heterogeneous
FDA clinical evidence in diabetics (as reviewed in rulemaking) did not show adverse glycemic control at studied doses, but broader observational evidence on artificial sweeteners is mixed and prone to confounding/reverse causality; mechanistic debates continue (e.g., sucralose-6-acetate findings).
EVIDENCE STRENGTH
Confidence: Medium
Limited
Strong regulatory toxicology databases support classic endpoints, but long-term population health outcomes rely heavily on observational evidence and short-term interventions with heterogeneity.
REGULATORY POSTURE (U.S.)
Confidence: High
Authorized/Permitted
Codified in 21 CFR 172.831 as a permitted sweetening agent in foods under GMP.
REGULATORY DIVERGENCE
Confidence: Medium
Moderate
Broad international permission exists, but ADIs differ by authority (FDA 5 vs EU/JECFA 15 mg/kg bw/day) and some U.S. states explicitly name sucralose in disclosure or school-meal policies.
HEALTH-BASED GUIDANCE AVAILABILITY
Confidence: High
Established
Multiple authorities have established ADIs (FDA, EFSA/EU, JECFA).
EXPOSURE CERTAINTY
Confidence: Low
Medium
Regulatory exposure modeling exists (FDA EDI, EFSA exposure assessment), but up-to-date U.S. distributions and restaurant/fast-food concentrations are not routinely public.
DATA RECENCY & STABILITY
Confidence: Medium
Evolving
EFSA completed a major re-evaluation in 2026 and highlighted high-heat uncertainty; U.S. states enacted new disclosure/school-food measures naming sucralose (LA, CA).
Health guidance & exposure
- ADI — FDA (1998): 5 mg/kg bw/day
- ADI — JECFA (1990): 15 mg/kg bw/day (0–15)
- ADI — EFSA (EU) (2026): 15 mg/kg bw/day (previously established; retained)
Agency exposure estimates
- FDA — US consumers ≥2 years, 90th percentile estimated daily intake (EDI) in 1998 rulemaking: 1.6 mg/kg bw/day
- EFSA — EU population groups; highest dietary exposure estimate below ADI under current authorized uses (numeric values in EFSA annexes): Not specified
Restaurant and fast-food formulations (e.g., fountain concentrates, syrups, desserts) are frequently proprietary and not accompanied by publicly available mg/serving concentrations, limiting exposure quantification specific to chain menu items.
Data gaps
- Up-to-date U.S. population exposure distributions using current market data and contemporary product concentrations
- Fast-food/restaurant mg/serving concentration data (fountain beverages, syrups, desserts)
- Real-world characterization of high-heat degradation products from domestic cooking/baking scenarios and their dietary relevance
- Exposure relevance of sucralose-6-acetate as impurity/metabolite in typical dietary intakes
Found in these Restaurants
We found this ingredient in menu items at the following chains:
Methodology
We assign the Low / Limited Concern tier using published research, regulatory guidance, and PRūF’s additive taxonomy. Restaurant usage is derived from public ingredient disclosures and mapped to menu items where this additive appears.
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Related questions and pages
Regulatory context
Learn how this additive is treated across different regulatory frameworks and why mixture effects can matter.
Scientific Sources & References
About this Audit
Data sourced from publicly available nutrition guides and ingredient lists as of 2026-03-04. Percentages represent the frequency of an ingredient's appearance across standard menu items, not the quantity within a specific item. Regional availability and supplier formulations may vary.
PRūF is an independent educational tool and is not affiliated with, endorsed by, or connected to any restaurant chain mentioned. All trademarks belong to their respective owners.
