SodaStream's Diet Cola soda mix makes up to 12 liters (50 servings) of carbonated drink. It is naturally flavored with a very low level of sodium and contains no sugar, no high-fructose corn syrup and no aspartame additives. Ingredients: Water, Caramel Coloring, Natural Flavor, Phosphoric Acid, Citric Acid, Sucralose (SPLENDA® brand*), Caffeine, Sodium Benzoate (as Preservative).