Source Naturals Taurine 1000 Description CalmingNeurotransmitter Taurine is a crystalline, free-form amino acid. It is a soothing, inhibitory neurotransmitter and plays a major role in stabilizing the heartbeat and electrical activity of the nerves. Taurine is also necessary for the proper functioning of the "sodium/potassium ATP-ase pump", which regulates the ion balance between the cells and the extracellular fluid which surrounds them. This critically important "pump" actually uses 7% to 40% of the ATP energy our bodies produce Free Of Yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, or artificial color, flavor, or fragrance. Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.