Red Bull Energy Drink contains:- Caffeine: Caffeine was already known by ancient civilisations. They consumed it from natural sources like tea, coffee, cacao beans and cola nuts and appreciated its stimulating effects on the human body. Taurine: Taurine is an amino acid, naturally occurring in the human body and present in the daily diet. It is involved in a wide range of biological processes. B-group vitamins: Vitamins are essential micronutrients that are required for maintaining normal body functions. B-group vitamins play an important role in energy metabolism, such as the build-up and breakdown of carbohydrates and protein. Sugars: Made with sugar sourced from sugar beets. Alpine Water: Naturally, water is a main ingredient of Red Bull.