 Contrayerva

Contrayerva, or contrajerva, is the medicinal rhizome of various tropical Central American and South American species of "Dorstenia" in the family Moraceae, mainly "Dorstenia contrajerva" and the closely related "Dorstenia drakena" but also "Dorstenia brasiliensis"..The word "contrayerva" means “counter herb” in Spanish.