Alpine bistort

[drug name] Polygonum viviparum

Ranbu

Zhuyaliao

[English name] rhizomapolygonivivivipari

[Standard No.] ws3-bc-007

[source / prescription] this product is the rhizome of Polygonum viviparum L. In autumn, the leaves, stems, fine roots and silt are removed and dried in the sun.

[character] the product is flat cylindrical or lumpy, often bent into shrimp shape, 2-5cm long, 0.3-1.5cm in diameter; the surface is brown, slightly rough, with dense links and root marks; one side is raised, the other side is flat or slightly grooved; sometimes the apex has brown leaf sheath residues. It is hard in texture, flat in fracture surface, grayish brown or purplish red; white punctate vascular bundles are arranged in intermittent rings. The taste is bitter and astringent.

[identification] the cross section of the product: the cork layer is a series of cells, brown, often containing brown substance. Cortical stenosis. The vascular bundle is tough outside and arranged in rings intermittently; the diameter of xylem vessel is 10-25 μ M. The parenchyma cells have a large number of calcium oxalate clusters, 50-120 μ m in diameter, and contain starch granules, which are round, oval or helmet shaped, umbilical point like and fissure like.

[flavor] bitter, astringent, slightly sweet, warm.

[function and indications] antidiarrhea, strengthening stomach and regulating menstruation. Treatment of stomach disease, dyspepsia, diarrhea, irregular menstruation, metrorrhagia and so on.

[usage and dosage] 9g; take orally or decoction.

Store in a cool and dry place.