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E223PreservativeElevated concern
Sodium Metabisulfite
In plain words
The short version
A sulfite preservative widely used in wine and dried fruits — a documented allergen for sulfite-sensitive individuals.
Why we flag it
A sulfite preservative (common in dried fruit and wine). Sulfites can trigger asthma and other reactions in sensitive people and must be declared on labels, which is why we flag it.
Safety profile
ADI of 0.7 mg/kg body weight expressed as SO2. A documented allergen — can trigger severe asthma attacks and anaphylaxis in sulfite-sensitive individuals, particularly asthmatics (estimated 5–10% of asthmatics). Mandatory allergen labelling in the EU, US, and most jurisdictions when SO2 exceeds 10 mg/kg. Destroys thiamine (vitamin B1) in foods.
The detail
Educational information only. Not medical or dietary advice.