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Derris, Paraderris elliptica, is an evergreen climbing shrub with woody stems that grow up to 16m long and commonly found in East Asia. There is no known edible uses of Derris but it has several medicinal uses. It is used traditionally to eliminate microorganisms that cause diseases. It is applied to abscesses and used in the treatment of leprosy. It is sometimes used to cause abortion and increase menstrual flow in women. The root contains a toxic substance known as Rotenone, which is used as an insecticide.