Hi Ladybloom! I'm pretty sure that they don't use LIVE cordyceps!
"This is a peculiar fungus (Cordyceps sinensis) that grow on certain adult caterpillars native to the high mountains of China."
They use the fungus! Phew! I live in Chinatown and, sometimes I go around the corner to a great chinese herbalist...I have had 'potions' that contain bugs! yup...the bodies of these inch long beetle-y things. Look like cicadas. They are something else, I tell you!
You can rest assured that they don't put parasites BACK into you!