Cordyceps Sinensis an Herbal Remedy

Hey, my mom bought a small bag of them when we were in China and they were expensive. One of my cousin is a pharmacist and introduce her to CS because of her health condition.

She usually adds them when slow cooking white fungus sweet soup, reicpe:
http://www.tastehongkong.com/recipes/white-fungus-snow-ear-fungus-sweet-soup-with-papaya/

LINK:
http://cordyceps-sinensis-mushroom.blogspot.com/
http://chinese.herbs.webs-sg.com/articles_4.html
http://www.nepaliproducts.com/herbal/cordyceps_sinensis.php