What is Red Bull made of?

Red Bull is largely sugared water, Glucose, Taurine, Glucuronolactone, Caffeine, Niacin (niacinamide), Sodium citrate and Inositol

I have a can of Sugar Free Red Bull with me right now. The ingredients are as follows: Carbonated Water, Citric Acid, Taurine, Sodium Citrate, Magnesium Carbonate, Caffeine, Glucuronolactone, Acesulfame K, Aspartame, Inositol, Niacinamide, Calcium Pantothenate, Pyridoxine HCL, Vitamin B12, Xanthan Gum, Natural and Artificial Flavors, Colors.