Water, sugar, acid: citric acid, carbonic acid, taurine, acidity regulator: sodium citrates: flavouring, caffeine (0.032%), glucuronolactone, inositol (0.02%), colour: e150c; vitamins: niacin, pantothenic acid, vitamin b6, vitamin b2 and vitamin b12.
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.