Carbonated Water, Citric Acid, Taurine, Sodium Bicarbonate, Magnesium Carbonate, Caffeine, Acesulfame K, Aspartame, Niacinamide, Calcium Pantothenate, Pyridoxine HCl, Vitamin B12, Xanthan Gum, Natural and Artificial Flavors, Colors. Phenylketonurics: Contains Phenylalanine.