Forum / Allergies

Posted: Saturday, 17.12.2016 / 1:13

Topic: Sulphite allergy

Dear Sonya,

It is rare for someone to be allergic to sulphites. However, sulphites can cause allergy-like symptoms in people with underlying asthma and allergic rhinitis. The most common reaction is wheezing, tight chest and cough. The incidence of sulphite sensitivity in the general population is thought to be less than 2%, but this rises to between 5 and 13% in asthmatics.

Severe reactions to sulphites (anaphylaxis) have been reported but are very rare. Some people with urticaria, a type of skin rash, can also experience worsening of symptoms after eating sulphites.

Posted: Saturday, 17.12.2016 / 1:20

Topic: Sulphite allergy

Sulphites are important, as they help preserve many foods and drinks and prevent them from ‘going off’. Sulphites are also used in the production of most wines, as they stop the fermentation process, which would otherwise make the wine turn sour.

Foods which may contain added sulphites include (check labels):

- pickled foods and vinegar
- dried fruit eg dried apricots, prunes, raisins etc
- maraschino cherries
- tinned coconut milk
- beer, wine and cider
- vegetable juices
- some soft drinks
- grape juice
- bottled lemon juice and lime juice
- condiments (bottled sauces etc.)
- guacamole
- dehydrated, pre-cut or peeled potatoes
- fresh or frozen prawns
- some processed meat products

EU food labelling rules require all food sold in the UK to show clearly on the label if it contains sulphur dioxide or sulphites at levels above 10mg per kg or 10mg per litre (or if one of its ingredients contains it). Bear in mind that non-pre-packaged foods (e.g. 'loose' foods or foods prepared on the premises, including takeaways and restaurant food) are also covered by this labelling requirement, but if in doubt, it is always wise to ask.

Posted: Saturday, 17.12.2016 / 13:27

Topic: Sulphite allergy

Sonya wrote:

Thank you, Dr Alexandros and Dr David, but can you tell me what foods and drinks contain sulphites?

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