Sulfites are a group of chemical compounds used as preservatives, antioxidants, and even as bleaching agents. These compounds are commonly found in various foods such as wine, beer, dried fruits, and processed meats. Since sulfites are known to cause allergies, many consumers opt for food products that are sulfite-free. For this reason, food labels often use synonyms for sulfites, such as sulfur dioxide, sodium bisulfite, potassium metabisulfite, and others. These words refer to compounds that have similar functions to sulfites and are used interchangeably in food labeling. Knowing these synonyms is essential for individuals with sulfite allergies to make informed food choices.