Citric acid, natural flavors, maltodextrin, aspartame (phenylketonurics: contains phenylalanine), caffeine, contains 2% or less of the following: acesulfame potassium sodium citrate, magnesium oxide, niacinamide (vitamin b3), d-calcium pantothenate (vitamin b5), biotin (vitamin b7), cyanocobalamin (vitamin b12), pyridoxine hydrochloride (vitamin b6), taurine, guarana seed extract, ginseng extract, 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.