Cordyceps sinensis is a fungus commonly called Dong chong xia cao, translated to "Winter Worm,Summer Grass". It has been used extensively as a tonic and health supplement for subhealth patients especially seniors in China and other Asian countries. It contains the scientifically verified bioactive compounds with important roles in anti-fatigue, anti-inflammatory and improvement of wellness.The Cordyceps sinensis powder is produced by submerged fermentation using CS-4 strain. The fermented mycelium was grinded using a superfine pulverizer to give fine powder. It is 100% pure mycelium powder containing no carrier, fillers, binders, coloring and other ingredients. The product's contents of heavy metals and pesticide residues meet the standards of US and Europe Union.