Carbonated water, citric acid, potassium benzoate (preservative), aspartame (phenylketonurics: contains phenylalanine), natural flavor, potassium citrate, gum acacia, yellow 6, ester gum, salt, brominated vegetable oil, red 40.
Manufacturer likely did not include an allergen statement; however, please double-check the product packaging and/or contact the manufacturer if you have a severe food allergy.