There are countless studies of vitamins, minerals and “super” foods that are filled with antioxidants marketed as great immunity boosters for dogs and cats. Mushrooms are just one of these foods. Many types of medicinal mushrooms are great for supporting your dog’s (or cat’s) immune system. Each mushroom has a slightly different type of Beta-glucan, an important compound that helps to give mushrooms their health supporting properties. With each different type of beta-glucan, the mushroom has a different effect on the immune system. Mushrooms have qualities for being anti-inflammatory, anti-cancer, anti-cholesterol, anti-diabetic, anti-fatigue, anti-fibrotic, anti-microbial, anti-oxidative, anti-fungal (Candida albicans) anti-viral (Herpes for example).