Carbonated water, less than 2% of: natural flavors, caffeine, guarana extract, vitamins b3 and b6 (niacinamide and pyridoxine hydrochloride), acesulfame potassium, sucralose, citric acid, caramel color, phosphoric acid, sodium benzoate and potassium sorbate (to protect taste).
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.