Cordyceps is a fungus that lives on caterpillars in the mountain regions of China. It delivers a variety of benefits, like supporting the immune system as well as kidney, liver and heart health. It also helps maintain healthy cholesterol levels already within the normal range. Cordyceps supplements are often used to support healthy energy and endurance levels. They may also be used to support sexual health. Swanson offers some of the best gluten free, non-GMO, vegan and vegetarian formulas available via tablets, vegetarian capsules and more.