Potassium metabisulphite (E224)
Potassium metabisulphite (E224) is a preservative that Digestoa flags as moderate risk. Common concerns include asthma triggers.
What is Potassium metabisulphite?
Potassium metabisulphite (E224) is a preservative — used to extend shelf life and stop spoilage.
Is Potassium metabisulphite bad for you?
Digestoa flags Potassium metabisulphite as moderate risk. Regulators permit it, but safety reviews and studies have raised concerns including asthma triggers. How often you eat it matters more than a single exposure.
- Asthma triggers
What foods contain Potassium metabisulphite?
Packaged meats, baked goods, soft drinks and other long-shelf-life foods.
Digestoa's take
You don't need to panic over a single product that contains Potassium metabisulphite. But it's a useful flag: when you see E224 on a label it often signals a more processed product, and there's usually a cleaner alternative.
Safer swaps
Choose fresher items with shorter shelf lives, or naturally preserved products.
Frequently asked questions
Is E224 the same as Potassium metabisulphite?
Is Potassium metabisulphite bad for you?
What are the side effects of Potassium metabisulphite?
What foods contain Potassium metabisulphite?
How can I avoid Potassium metabisulphite?
Related preservative additives
Risk ratings reflect Digestoa's editorial assessment synthesising EFSA/IARC opinions and peer-reviewed research. Informational only — not medical advice.