This product is likely Eosinophilic Esophagitis Friendly.
Carbonated water, citric acid, sodium citrate, natural flavors, l-leucine, caffeine, l-isoleucine, l-valine, sucralose, sodium benzoate (preservative), potassium citrate, potassium sorbate (preservative), acesulfame potassium, niacinamide (vit. B3), magnesium lactate, coenzyme q-10, pyridoxine hydrochloride (vit. B6), cyanocobalamin (vit. B12).
Contains: recommended for persons 18 years or older. Enjoy responsibly: not recommended for persons under 18 years old, people sensitive to caffeine, pregnant women or women who are nursing. Intended for healthy adults only. Consult a healthcare professional before consuming this product if you are taking any medication or if you have any preexisting medical conditions. One can contains 300 mg of caffeine from all sources. The fda has stated that consumption of up to 400 mg of caffeine per day from all sources is not associated with adverse health effects in healthy adults.