American BioSciences NK-9 AHCC Immune System Support Description: Dramatically Enhances Your Pet's Immune Defenses Helps Keep Your Dog Healthy and Active NK-9 Immune System Support for pets helps maintain a healthy immune system by upregulating Natural Killer (NK) cell function. NK cells are a type of white blood cell known as the immune system's front line defense -they seek out and destroy and “non-self” cells in the body. With NK-9’s support pets may sustain long term health by maintaining a strong immune system even into their golden years. NK-9 contains the ingredient Active Hexose Correlated Compound (AHCC) which is an extract from the fermentation of a hybridized mushroom. AHCC (identified in Japan in the ‘80s) has been the subject of over 30 articles in peer-reviewed journals describing research in animals and humans, showing that AHCC supports peak Natural Killer cell function. NK-9 is "the" immune support product for pets. Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.