Taurine is an important component to all IAMS™ cat foods, such as IAMS ProActive Health™ Adult Original with Chicken. Taurine is an essential amino acid that is critical for normal heart muscle function, vision, and reproduction in kittens. It is also needed to form the bile salts that aid in digestion. Unlike other amino acids, taurine is found as a free amino acid in body tissues such as the heart and eyes, and is not incorporated into proteins.

Most mammals manufacture taurine from other amino acids. However, cats cannot manufacture a sufficient amount and, therefore, must acquire enough additional taurine through diet to meet their needs. In pet food, taurine is naturally found in animal-based protein ingredients and can also be added separately.