Cordyceps sinensis is a well-known medicinal mushroom from high elevations in the Himalayas. Cordyceps sinensis is a well-known medicinal mushroom from high elevations in the Himalayas. Because of its rarity, Cordyceps was traditionally restricted to the few who could afford it, as a tonic for the elderly and those recovering from long illness. At Irish Botanica, we keep things simple; by choosing suppliers who share our faith in the natural process, suppliers who do as little as possible with the raw ingredients so they stay pure and potent. We test rigorously to ensure the final product is as wonderful as the plants and herbs we began with. At Irish Botanica we simply package and deliver natural goodness.