Avoid
E225 — Potassium sulphite
Preservative
E225 (Potassium sulphite), a preservative, is rated "avoid": worth avoiding. A sulfite preservative. Sulfites trigger asthma attacks in sensitive people and must be declared as an allergen above 10 mg/kg. Yuka moved the whole E220-E228 sulfite family to red in 03/2026.
Why it's rated “avoid”
A sulfite preservative. Sulfites trigger asthma attacks in sensitive people and must be declared as an allergen above 10 mg/kg. Yuka moved the whole E220-E228 sulfite family to red in 03/2026.
Risk rating: Avoid
Known or suspected to cause harm: a substance EFSA or another regulator has flagged, or one restricted in some jurisdictions. Best kept out of a regular diet.
Frequently asked questions
Is E225 (Potassium sulphite) safe?
A sulfite preservative. Sulfites trigger asthma attacks in sensitive people and must be declared as an allergen above 10 mg/kg. Yuka moved the whole E220-E228 sulfite family to red in 03/2026.
What are other names for E225?
E225 is also known as potassium sulphite, potassium sulfite.