Carbonated water, citric acid, potassium citrate, corn starch-modified, potassium benzoate (preservative), aspartame, acesulfame potassium, glyceryl abietate, natural flavors, yellow 6, red 40, potassium sorbate (preservative).
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.