Host Defense Cordyceps Extract supports energy stamina and daily wellness with mushroom mycelium. Cordyceps is traditionally used to support immune health and overall wellness and is valued for helping maintain endurance and energy output. This formula also supports kidney health lung health for fitness performance and brain health with aging making it a useful option for athletes and active individuals. Suggested use is one full dropper twice daily with food or on an empty stomach or as directed by a healthcare advisor. Host Defense products contain no fillers and are third party tested for quality and safety. Made by Fungi Perfecti a family owned company founded in 1980 by Paul Stamets this supplement is grown in Washington State using cultivated mushroom mycelium and fruit bodies.