Believe it or not, Taurine is derived from seaweed, fungi, and bacteria. You may be saying, what! Let me also let you know that Taurine is the main substance in bile. So you see, Taurine is an organic compound that lives in mammals, the lower species, and in plants. Interesting! You can find more information here: http://www.power-horse.com/energydrinkfacts/ingredients/taurine/
