Health Canada requires food manufacturers to clearly label products if the government’s “Priority Allergens” are among the ingredients. They are: peanut; tree nuts; soy; wheat; egg; milk; seafood (shellfish, fish, and crustaceans); sesame; sulphites; and mustard. By law, priority allergens are to be clearly labeled on the product.

In Canada, the priority food allergens are peanuts, tree nuts (almonds, Brazil nuts, cashews, hazelnuts, macadamia nuts, pecans, pine nuts, pistachio nuts and walnuts), sesame seeds, milk, eggs, fish, crustaceans and molluscs, soy, wheat or triticale (a hybrid of wheat and rye grains), and mustard.