Citric acid, maltodextrin, aspartame (phenylketonurics: contains phenylalanine), sodium citrate, calcium phosphate, red 40, contains less than 2% of acesulfame potassium, potassium citrate, natural & artificial flavors, corn syrup solids (adds a trivial amount of sugar), calcium silicate, magnesium oxide, artificial color, sugar (adds a trivial amount of sugar), blue 1.
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.