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Knotgrass

萹蓄 〔萹蓄〕biǎn xù

Latin pharmacognostic name: Polygoni Avicularis Herba

Alternate Chinese names: 萹竹 biǎn zhú; 畜辩 xù biàn; 扁蓄 biǎn xù; 地萹蓄 dì biǎn xù; 编竹 biān zhú; 扁畜 biǎn xù; 扁竹 biǎn zhú

Kingdom: Plant

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

Origin (other sources): Polygonum aviculare L.

Use: Medicinal

Category: Water-disinhibiting dampness-percolating agents / Urine-disinhibiting strangury-freeing agents

Properties: Bitter; slightly cold.

Channel entry: Bladder channel.

Indications:

Dosage & Method: Oral: 10–30g in decoctions; double the dose if using the fresh herb.

Warnings: Use with care in spleen vacuity.

Quality: Leafy, green, tender plants without earth are the best.

Product Area: Shāndōng, Jílín.

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