citric acid, maltodextrin, aspartame**, caffeine, contains less than 2% of: , acesulfame potassium, magnesium oxide, calcium silicate, niacinamide (vitamin b3), calcium pantothenate and biotin (b-vitamins), natural and artificial flavors, red 40, titanium dioxide (color), pyridoxine hydrochloride (vitamin b6), cyanocobalamin (vitamin b12), yellow 5, blue 1. **phenylketonurics: contains phnylalanine.