Cordyceps is one of the most important tonifiers of Chinese herbalism. Planetary Herbals Full Spectrum Cordyceps 450 provides the same dosage of cordyceps (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.