Give your dog an immune boost with REAL medicinal mushrooms. Each mushroom in Immunity is specifically chosen to help balance your dog’s immune system. Be warned: Nearly all pet mushroom products are mycelium. Mycelium is not a true mushroom product. It's a partially-grown fungus, usually grown on grains, and it's often lower in beta-glucans ... (that research shows is a really important medicinal ingredient that can help fight cancer and boost immunity.) - Organic - No GMO - No Mycellum - No Fillers - No Starch - No preservatives, binders, flavorings or fillers. Ingredients: - Turkey Tail: Turkey tail mushroom are full of antioxidants and prebiotics. The prebiotics can help boost beneficial bacteria like Bifidobacterium and Lactobacillus and can reduce bad bacteria like Clostridium and Staphylococcus. - Chaga: Chaga grows naturally on birch trees. That's why we grow our Chaga mushrooms sustainably, on native materials. Research suggests Chaga may be able to help regulate and boost the production of cytokines. Cytokines are essential to the immune system ... and a good immune system can help fight off infection and disease. - Cordyceps: Cordyceps are full of antioxidants. Cordyceps are known to help boost physical performance and support a healthy heart. - Phellinus: Phellinus is an immune modulator and largely used in Chinese medicine. - Maitake Mushroom: The beta-glucans in Maitake have been extensively researched as potent immune system enhancers. - Reishi Mushroom: Scientists have been researching Reishi since the 1970’s. Its highly active beta-glucans can activate the immune system benefiting sick, stressed, and dogs with infections. - Shiitake Mushroom: The highly active beta-glucans in Reishi can help repair leaky gut, activate the immune system and help sick or stressed dogs.