Eleuthero (ei wu jia), also known as devil's bush, is a shrub found in Siberia and Korea, as
well as in some parts of the US Pacific Northwest and British Columbia.
The
root of the plant, formerly known as Siberian ginseng, has been used in Chinese
medicine for centuries.
Today, the dried and powdered root is encapsulated, used
to make tea, or mixed into other beverages.