Carbonated water, citric acid, taurine, erythritol, sodium citrate, caffeine, natural flavors, sucralose, sodium benzoate (preservative), potassium sorbate (preservative), modified corn starch, medium chain triglycerides, acesulfame potassium, niacinamide (vit. B3), salt, d-calcium pantothenate (vit. B5), inositol, pyridoxine hydrochloride (vit. B6), yellow 5, yellow 6, cyanocobalamin (vit. 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.