Citrus sugar free energy drink with natural and artificial flavors. Caffeine. B-vitamins. 10 calories per can. Be smart about managing your energy. The Amp Energy Sugar Free Line Up: Amp Energy Boost: With B-vitamins to help kick you into high gear. Amp Energy Active: Energize and hydrate. Caffeine Content: 71 mg/8 fl oz; 142 mg/16 fl oz. ampenergy.com. Product questions? 1-800-433-2652. Ingredients per Can: Guarana seed extract 295 mg, taurine 13 mg, panax ginseng extract 13 mg. Please recycle.