2.4g zero calorie packet. add to 16.9 fl oz of water. water beverage mix with electrolytes and vitamins. ingredients: citric acid, salt, sodium citrate, monopotassium phosphate, maltodextrin, sugar, ascorbic acid (vitamin c), sucralose, silicon dioxide, niacinamide (vitamin b3), acesulfame potassium, calcium disodium edta (to protect flavor), calcium pantothenate (vitamin b5), natural flavor, vitamin e acetate, pyridoxine hydrochloride (vitamin b6), cyanocobalamin (vitamin b12)