Pets can benefit any age! Taurine Boost gives any dog or cat, young or old, the support their heart needs with amino acids, nutrients, and antioxidants. While taurine benefits every four-legger, any dog or cat predisposed to cardiac problems currently has cardiac problems or is fed low-quality food needs to supplement taurine. And, until we better understand the connection between grain-free pet foods and taurine, any dog fed grain-free pet foods should also be supplementing.