Harness the cognitive power of Lion s Mane mushrooms. Our formula delivers certified organic mushroom mycelium to help improve mental clarity memory and your ability to focus. The ?smart mushroom? can help more than your brain too. Lion s Mane is a natural source of polysaccharides beta glucans and other myco- nutrients that support a healthy nervous and immune system. Certified organic and grown in the USA Host Defense is the smartest way to tap into the brain- boosting benefits of Lion s Mane.