Trident White

Question

Is this kosher? Ingredients: Soribitol, Gum Base, Maltitol, Mannitol,Artifical and Natural Flavoring, Less than 2% of: Acacia, Acesulfame Potassium, Aspartame, BHT (to maintain freshness), CalciumCasein Peptone-Calcium Phosphate (lactose-free Milk derivative)Candelilla Was, Sodium Sterate and Titanium Dioxide (color). Contains a Milk Derived ingredient, does this make it dairy?