Citric acid, maltodextrin, potassium citrate, aspartame (phenylketonurics: contains phenylalanine), magnesium oxide, contains less than 2% acesulfame potassium, sugar (adds a trivial amount of sugar), calcium silicate, natural flavor, artificial color, red 40.
Manufacturer likely did not include an allergen statement; however, please double-check the product packaging and/or contact the manufacturer if you have a severe food allergy.