Red Bull Zero: Energy Drink, 250 ml Can. Contains Caffeine, Taurine & B Vitamins; for Active Lifestyle, Busy Professions, Sports & Fitness and Gaming Red Bull Energy Drink's unique formula contains ingredients of high quality: Caffeine, Taurine, some B-Group Vitamins, low- and non-caloric sweeteners, Water. Stay alert Red Bull Energy Drink contains caffeine that helps to improve concentration and increase alertness. Reduce fatigue Red Bull Energy Drink contains B-group vitamins (niacin, pantothenic acid, B6, B12), which contribute to the reduction of tiredness and fatigue. Balance your body Red Bull Energy Drink contains taurine, an amino acid that occurs naturally in the human body and is involved in a range of processes including regulation of water/electrolyte balance at the cellular level. Water Water is the main ingredient of Red Bull. Dedication to its quality contributes to the iconic taste in every sip.