Taurine is the most abundant free amino acid in the heart and nervous system, and it plays a role in the healthy functioning of the brain, heart, gallbladder, eyes, and vascular system. As a dietary supplement, it is most notably known for its heart muscle support. Taurine is an important component of bile acids which aid in the absorption of fat-soluble vitamins. It aids the bodyâs chemistry by detoxifying harmful chemicals.