Pet MD is a trusted pet care brand since 2002. Pet MD Mushroom Immune Support contains turkey tail mushrooms for dogs and a cat mushroom complex that serves as an excellent immune system support for dogs and cats, as well as a dog and cat skin and coat supplement. It features reishi mushroom, shiitake mushroom, turkey tail mushroom, and maitake mushroom, acting as a cat immune booster and an immune support supplement for dogs. These four mushrooms are known for their immune support and antioxidant properties. Our soft chews also include milk thistle for dogs extract, coenzyme Q-10, Vitamin A, Selenium, and vitamin C for cats (calcium ascorbate) for cat eye care and may help in cat and dog kidney support.