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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:
- Disinhibits urine and frees strangury: Damp-heat strangury patterns.
- Kills worms and relieves itching: Abdominal pain from worm accumulation; eczema;
genital itch .
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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