TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY
Wild senna (Cassia senna) plant. The leaves and seed pods of this plant have a strong purgative effect when taken as a fluid extract, powder or infusion. Senna is in widespread pharmaceutical use as a laxative. The active constituent acts on the wall of the lower intestine.
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