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Latin pharmacognostic name: Bistortae Rhizoma

Alternate English names: snakeweed [root]

Alternate Chinese names: 紫参[1] zǐ shēn

Kingdom: Plant

Origin in PRC Pharmacopoeia: Polygonum bistorta L. (PRC Pharmacopoeia)

Origin (other sources): Polygonum bistorta L.*; Polygonum lapidosum Kitag.; Polygonum manshuriense V. Petr.; Polygonum pacificum V. Petr.; Polygonum viviparum L.; Polygonum attenuatum V. Petr.; Polygonum alopecuroides Turcz.; Polygonum sphaerostachyum Meissn.

Use: Medicinal

Category: Heat-clearing agents / Heat-clearing toxin-resolving agents

Properties: Bitter; cool; slightly toxic*.

Channel entry: Liver, stomach, and large intestine channels.

Indications:

• Clears heat and resolves toxin: Diarrhea and dysentery; welling-abscesses; scrofula; scalds; snake bites.
• Staunches bleeding; extinguishes wind: Blood heat vomiting of blood and nosebleed; bleeding from external injuries; high fever and convulsions.

  Dosage & Method: Oral: Decoct 3–10g. Topical: Appropriate amount.

  Product Area: Shāndōng, northern China, Manchuria, Jiāngsū, and Húběi.

  See also: Xiē zǐ qī (蝎子七 Polygoni Vivipari Rhizoma, serpent grass [root])

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