The following notes refer to the species of this plant. Culpeper: “The roots (boiled in vinegar) ... be an admirable remedy against inveterate scabs, itch and leprosy, the same helps the toothache, being held in the mouth, dropped into the ears, helpeth deafness coming of melancholy and noises in the ears; corrected with a little cinnamon (as powder) it purgeth melancholy, resisteth madness.”

Toxicity due to tropane alkaloids.