NOW Double Strength Taurine is a concentrated source of an extremely versatile free form amino acid. Taurine is different than other amino acids in its structure and isn't used to build proteins. However, it is used throughout your body and it particularly important to the nervous system. Taurine helps your nervous system send chemical signals and is especially valued for its relaxing, anxiety reducing power.Here's a quick overview of the other functions taurine performs throughout the body. It's an important component of bile salts, which help your body process fat. Taurine is an antioxidant and also gives some protection against certain toxins, like lead. It's also important for maintaining eye health and is required for normal muscle function. Taurine isn't found in vegetable proteins, making supplementation extremely important for vegetarians.