Flavor with other natural flavors. Taurine. 240 mg caffeine per can. B-Vitamins. Caffeine. Contains no juice. Rockstarenergy.com. In Each Serving: taurine 1000 mg, caffeine 120 mg, glucuronolactone 50 mg. Total caffeine from all sources: 240 mg per can. 260 calories per can. Dispose of properly.