Current European regulations require the labeling of all foods containing sulphites.

Often sulphites are added to manipulated meats.

Sulfites and bisulfites are substances derived from sulfur and used as antioxidants or preservatives. European regulations require labeling of any food containing sulphites in concentrations greater than 10 mg / kg or 10 mg / l, and these products must be declared with the term sulfite or sulfur dioxide (E-220, E-221, E – 222, E-223, E-224, E-225, E-226, E-227 and E-228).

Sulfites may be responsible for asthmatic exacerbations in patients with asthma. The foods and / or beverages that most often contain sulphites are wine (containing sulphites produced during fermentation), other packaged alcoholic or non-alcoholic beverages (juices, must, cider), packaged foods, pre-cooked foods, preserves, frozen foods and vinegar Apart from respiratory symptoms, sulphites can also cause digestive and / or skin discomfort.