Himalayan mountain peoples have traditionally used Cordyceps (Cordyceps sinensis) to enhance their performance during strenuous, high altitude activities. Recently, physical fitness enthusiasts and professional athletes have discovered that Cordyceps may have the cardio-enhancing effects of increased oxygen uptake, supporting higher endurance levels. People have also found that Cordyceps support healthy sexual functioning.

Host Defense Cordyceps contains activated, freeze-dried, Certified Organic mycelium, providing a complex array of synergistic constituents including polysaccharides, glycoproteins, ergosterols, and triterpenoids.