Chewable Tablets NOW Pets Immune Support is designed to help support your pet’s immune system and innate resistance to pathogens, as well as help to enhance liver and kidney function. NOW Pets Immune Support is made with natural botanicals and has been formulated by renowned veterinarian Dr. Barbara Royal, DVM, CVA, founder of the Royal Treatment Veterinary Center. For use in Dogs and Cats only. If animal’s condition worsens or does not improve, stop product administration and consult your veterinarian.