With Taurine Veterinarian Recommended With Chicken Bone Broth for Flavor NOW Pets Cardiovascular Support is designed to support normal circulation and cardiovascular function. NOW Pets Cardiovascular Support is a unique pet supplement made with carnitine, taurine, antioxidants, and botanicals. For more flavor, we added chicken bone broth, sourced from the USA, that is growth hormone and steroid free. Formulated by renowned veterinarian Dr. Barbara Royal, DVM, CVA, founder of the Royal Treatment Veterinary Center.