In China, Cordyceps sinensis is recognized as a premier tonifier for athletes and anyone wanting to support energy and endurance. Planetary Herbals Full Spectrum Cordyceps 450 provides the same amount of cordyceps CS-4 extract (standardized to 0.1% adenosine) used in clinical studies. This is combined with cordyceps mycelia grown on organic brown rice from spores originally gathered in the Himalayas. This combination insures a full spectrum of important cordyceps constituents.