Digestoa
Additive · Preservative

Sodium metabisulphite (E223)

Sodium metabisulphite (E223) is a preservative that Digestoa flags as moderate risk. Common concerns include asthma triggers.

Digestoa riskModerate risk
TypePreservative
Found inpackaged meats, baked goods, soft drinks and other long-shelf-life foods
ConcernsAsthma triggers · Allergic reactions

What is Sodium metabisulphite?

Sodium metabisulphite (E223) is a preservative — used to extend shelf life and stop spoilage.

Is Sodium metabisulphite bad for you?

Digestoa flags Sodium metabisulphite as moderate risk. Regulators permit it, but safety reviews and studies have raised concerns including asthma triggers, allergic reactions. How often you eat it matters more than a single exposure.

What foods contain Sodium 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 Sodium metabisulphite. But it's a useful flag: when you see E223 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 E223 the same as Sodium metabisulphite?
Yes — E223 is the international additive (E-number) code for Sodium metabisulphite.
Is Sodium metabisulphite bad for you?
Digestoa flags Sodium metabisulphite (E223) as moderate risk. It's permitted in food, but it's associated with concerns such as asthma triggers.
What are the side effects of Sodium metabisulphite?
Reported concerns include: Asthma triggers; Allergic reactions.
What foods contain Sodium metabisulphite?
Packaged meats, baked goods, soft drinks and other long-shelf-life foods.
How can I avoid Sodium metabisulphite?
Check the ingredients list for "Sodium metabisulphite" or "E223", or scan the product with Digestoa to see if it's present before you buy.

Related preservative additives

Potassium nitrite (E249)Sodium nitrite (E250)Sodium nitrate (E251)Potassium nitrate (E252)Benzoic acid (E210)Sodium benzoate (E211)

Risk ratings reflect Digestoa's editorial assessment synthesising EFSA/IARC opinions and peer-reviewed research. Informational only — not medical advice.