Citric acid, maltodextrin (adds a trivial amount of sugar), natural and artificial flavors, sucralose, potassium citrate, ascorbic acid (vitamin c), salt, contains 2% or less of the following: malic acid, tartaric acid, magnesium oxide, acesulfame potassium, cellulose gum, pectin, calcium silicate, red 40, 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.