an amino acid important in several of the body's metabolic processes, is thought to have antioxidant properties. But little is known about the effects of long-term supplemental taurine use. Taurine is found naturally in meat, fish, dairy products and human milk, and it's also available as a dietary supplement.
Taurine is an amino sulfonic acid, but it is often referred to as an amino acid, a chemical that is a required building block of protein. Taurine is found in large amounts in the brain, retina, heart, and blood cells called platelets. The best food sources are meat and fish.