Other Names: Adderwort, Bistorta, Couleuvrée, Couleuvrine, Dragonwort, Easter Giant, Easter Mangiant, Langue de Bœuf, Langue-de-Veau, Oderwort, Osterick, Patience Dock, Polygone, Polygonum bistorta, Red Legs, Renouée Bistorte, Serpentaire, Serpentaire Bistorte, Serpentaire Rouge, Snakeweed, Sweet Dock., Quan Shen, 拳參 Quán Shēn, "fist root"<br>Bistort is a plant. The root and underground stem (rhizome) are used to make medicine.
==Special Precautions of Bistort==
Medications taken by mouth (Oral drugs) interacts with BISTORT : Bistort contains a large amount of chemicals called tannins. Tannins absorb substances in the stomach and intestines. Taking bistort along with medications taken by mouth can decrease how much medicine your body absorbs, and decrease the effectiveness of your medicine. To prevent this interaction, take bistort at least 1 hour after medications you take by mouth.