Swizzels Giant Fizzers 40g contain ingredients including sugar, acidity regulator (malic acid), anti-caking agents (stearic acid, magnesium stearate, magnesium carbonate), sodium bicarbonate, modified starch, flavourings, and colours (anthocyanin, copper chlorophyllin, lutein, and paprika extract). These fizzers are suitable for vegetarians, vegans, and are gluten-free, with no allergens listed in the primary ingredients. However, depending on the manufacturing facility, there can be a risk of cross-contamination with common allergens like nuts, peanuts, dairy (milk), soya, and gluten, so those with severe allergies should always check the product packaging for a specific “may contain” warning.