Gravel Root goes by numerous aliases; in addition to its scientific name, Eupatorium purpureum , it is commonly known as gravelweed, kidneywort, purple boneset and jopai weed - reportedly after an Algonquin Indian from New England whose name was Jopai ("Joe Pye"), a shaman who became known for curing complaints with the use of Native American herbs like cut Gravel Root.
Warning: For external use only. Not to be used during pregnancy. Not to be used while nursing. Do not apply to broken or abraded skin.