TaurineTaurine, also known as 2-aminoethanesulfonic acid, is a biologically important chemical compound. Its empirical formula is C2H7NO3S. It is not an essential nutrient in humans: It can be synthesized internally from cysteine and pyridoxine. Dogs can also synthesize the compound, but cats cannot.
In human metabolism it has two major roles. It is a neuroinhibitory transmitter and is part of the emulsifying bile acid chenodeoxychloic acid. It has been linked to a number of other metabolic functions but its use is not clear.