Citric acid, maltodextrin, aspartame**, caffeine, magnesium oxide, contains less than 2% of: acesulfame potassium, sugar*, gum arabic, natural flavors, calcium silicate, niacinamide, artificial color, red 40, calcium pantothenate (pantothenic acid), pyridoxine hydrochloride (vitamin b6), yellow 5, biotin, cyanocobalamin (vitamin b12), blue 1. *adds a trivial amount of sugar.
**phenylketonurics: contains phenylalanine. not recommended for children or those sensitive to caffeine.