Grapefruit flavor with other natural flavors. Per Can: 20 calories; 0 g sat fat (0% DV); 360 mg sodium (16% DV); 0 g total sugars. Zero sugar. Sugar free. B-Vitamins. Taurine. 240 mg caffeine. Caffeine Content: 240mg/16 fl oz. rockstarenergy.com. Please recycle.