Carbonated water, amino blend (l-threonine, l-leucine, l-citrulline, l-theanine, sustamine(as much caffeine from natural sources as 8 fluid ounces of standard brewed coffee) l-alanyl-l-glutamine, micronized taurine, l-lysine hydrochloride), malic acid, natural and artificial flavor, citric acid, sodium citrate, potassium sorbate and potassium benzoate (as preservatives), caffeine (from tea leaf and/or coffee bean), sucralose, potassium chloride, magnesium phosphate.
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.