
Description
This plant is native to Europe but was readily cultivated in North America in the early 19th century. Every eclectic medical text consulted listed this plant as a “cerebral stimulant” when used as a simple or single herb administration. The preparation of the fluid extract from the rhizome was official in the United States Pharmacopeia from 1820-1936 and in the National Formulary from 1888-1946. It is still used to promote…