Energy drinks are non-alcoholic functional beverages with a stimulating effect and unique combinations of characterizing ingredients including caffeine, taurine, vitamins and other substances with a nutritional or physiological effect. Energy drinks can also contain further ingredients like glucuronolactone, flavourings, colourings and other additives. They are a relatively new beverage category within Europe and are increasing in popularity. The term energy drink is a well-established and globally recognized name for this category of non-alcoholic beverages. They are available in various formulas and offered in a wide range of flavours both in sugar and sugar-free variants so that consumers can choose the flavour that suits them best.