In accordance with the Danish Brewers Association, energy drinks are defined as soft drinks containing caffeine. Caffeine acts as a central nervous system stimulant in the body and is added to provide alertness. Caffeine is naturally found in coffee, tea as well as cola-nuts but can also be added to foods as extracts from the above-mentioned sources. Energy drinks may also contain taurine and vitamins. Taurine can be characterized as an amino acid, which is found naturally in meat and fish and is added to energy drinks as pure substance. Taurine is discussed to have antioxidant properties as well as being a supplement to improvement of athletic performance. Addition of caffeine and taurine is regulated nationally by the Veterinary and Food Administration in BEK nr. 634 17/05/2022. Addition of vitamins is also regulated nationally by the Veterinary and food Administration BEK nr. 633 17/05/2022.