Welcome to Sulphite / Sulfite Sensitivity, the home of information about a widely used preservative which can cause a variety of medical symptoms.

Canada's national health department, Health Canada, calls sulphites: “One of the nine most common food products causing severe adverse reactions.” That’s strong wording for a substance most people have never heard about.

An internet search for sulphites (Canadian spelling) or sulfites (American spelling) yields a lengthy list of results.Many aren’t very relevant. 

If you’re looking at this page, you’re looking for answers because you or someone you know has some mysterious symptoms that you can’t track down but suspect it could be sulphite / sulfite related.

And if you’ve found this website, chances are you’ll find related sulphite / sulfite sites, but we have gathered information to make your search easier.

Our links are to those sites that we found most useful and helpful.