Sweeteners
Sucralose
Definition
What it is
Artificial sweetener: non-caloric synthetic sweetener with contested long-term health effects; IARC classified aspartame as 'possibly carcinogenic' in 2023.
On the label
How it appears on labels
- sucralose
Regulation
Regulatory status
No bans or restrictions are recorded for this ingredient in the jurisdictions clearlabel tracks (US, EU, UK, Canada, Japan, Australia/NZ, Brazil).
Explainer
In plain language
Sucralose is an artificial sweetener about 600 times sweeter than table sugar, made by chemically modifying sugar so that three of its hydroxyl groups are replaced with chlorine atoms. This change means the body absorbs very little of it and it adds effectively no calories. It is heat-stable enough to be used in baking, which sets it apart from some other sweeteners, and it shows up under the brand name Splenda.
Assessment
Why it is flagged
Regulators including the FDA, EFSA, and Health Canada permit sucralose, and it was approved in the US in 1998. The long-term picture is contested. Some studies have associated sucralose with changes in gut bacteria and glucose response, and a 2023 laboratory study on a breakdown product called sucralose-6-acetate raised questions about genotoxicity, though these were cell and animal findings rather than proof of harm in people. Baking sucralose at high heat can also generate other compounds, which is an area of ongoing study. Clear Label flags sucralose because major bodies still weigh its long-term effects differently and because some users track digestive changes or headaches against it in their own logs. Those are correlations to test, not diagnoses.
In the aisle
Where it commonly shows up
- Diet and zero-sugar sodas
- Sugar-free gum and candy
- Protein powders and bars
- Sugar-free syrups and coffee flavorings
- Reduced-sugar baked goods and drink mixes
- Tabletop sweetener packets
Practical
Reading the label
Sucralose is usually named outright in US ingredient lists, and often carries the brand name Splenda. In the EU it appears as E955. It turns up in many products labeled 'no sugar added' or 'keto,' sometimes alongside other sweeteners like acesulfame potassium.
Alternatives
If you want to avoid it
Some people who want fewer artificial sweeteners choose products sweetened with stevia or monk fruit, which Clear Label tracks as separate lower-severity flags, or unsweetened versions of the same product. Plain water, coffee, or tea without sweetener sidesteps the question entirely.
FAQ
Common questions
Is sucralose banned anywhere?
No major market has banned sucralose as of 2026. The FDA, EFSA, and Health Canada all permit it with a defined acceptable daily intake.
Can you bake with sucralose?
Yes, it is more heat-stable than some other sweeteners, which is why it appears in baked goods. Some research is looking at whether high-heat baking generates other compounds, so this is an open question rather than a settled one.
Why do some people avoid it anyway?
Some users report bloating, digestive changes, or headaches that track with sucralose in their food and symptom logs. The published evidence is mixed, which makes it a personal pattern worth testing rather than assuming.
Citations
Sources
Citation
Primary reference
About this page: the definition, label names, severity, and regulatory chips come from the clearlabel ingredient taxonomy, the same data the scanner uses to score products. Research summaries describe associations reported in published studies, not diagnoses; individual responses vary. Scan any product with clearlabel to see which of its ingredients carry flags.