i Love Dogs Reishi with Green Tea Immunity Boost Supplement for Medium Dogs 20 to 40-Pound Enhances immune modulators, providing system support for senior dogs, dogs with weak immune systems, chronic illness, or ongoing medical treatment Helps itchy or sneezy dogs with anti-allergenic properties that allow it to inhibit the release of histamine, which causes allergic reactions Reishi has been shown to prevent the growth of tumors and even cause them to regress; Also helps reduce side effects associated with treatment Reishi mushroom promotes calmness by relieving stress and lessening nervous tension, which in turn helps to keep the immune system strong Natural, veterinarian-formulated and tailor-dosed tablets are pork-flavored for dogs of all sizes and ages; Gluten-free and made in the U.S.A