Host Defense Reishi is an all-natural supplement made from a certified organic mushroom. It helps to support the body's natural defenses and promote overall health. Reishi is especially known for its ability to improve mental clarity, reduce stress levels, and boost immunity. Host Defense Reishi is easy to take and fast-acting, so you can start feeling the effects quickly. It's also non-GMO, vegan, and gluten-free, making it a safe and healthy choice for all.