In the wild, Cordyceps sinensis acts as a parasitic fungus on a host (a caterpillar), which means that the mycelium feeds on the host's tissues and eventually mummifies it. This is a natural process, just as nature intended. Most companies do not have access to naturally-produced Cordyceps sinensis and use grain to synthetically grow the fungus in place of the natural method. Unfortunately, this method often results in a far less potent version of the fungus. The Cordyceps sinensis used in Cordyceps+ is wild harvested directly from its natural source (the caterpillar) in the high-peak mountains of Bhutan, technically making it a non-vegan product.