SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Hellebore flowers (Helleborus sp.). This plant is poisonous, but preparations made from it have been used in herbal medicine for centuries. It has been used as a purgative and an anthelmintic (killing intestinal worms). When applied to the skin it has a strong irritant action. Tinctures of hellebore have also been used to treat hysteria.
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