Organic, functional mushroom blend supporting a healthy immune system and normal organ and immune function. BIXBI Immunity supplies a large range of antioxidants and polysaccarides to encourage maximum reduction of free radical damage to cells. The mushrooms in our formula have also been shown to support normal inflammatory responses and both white and red blood cell production. With BIXBI Immunity, your pet is well-positioned to fend off nearly anything that comes their way.