Water, citric acid, natural flavors, sodium citrate and potassium phosphate (electrolyte sources), less than 2% of sucralose, magnesium chloride and calcium chloride (electrolyte sources), vitamin b3 (niacinamide), vitamin b6 (pyridoxine hydrochloride), vitamin b12, acesulfame potassium, potassium benzoate and potassium sorbate and calcium disodium edta (to protect taste), red #40, yellow #6.
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.