Ultra Vitamin C Fizz provides 1000mg vitamin C, carefully balanced with zinc for maximum efficacy. Both vital nutrients help to maintain normalimmune system function. Vitamin C (Ascorbic Acid), Acidity Regulator: Sodium Bicarbonate, Citric Acid, Sweeteners: Sorbitol & Sucralose, Natural Orange Flavouring, Maize Starch, Natural Source Colours: Betacarotene Prep.