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Fish poison yam
萆薢 〔萆薢〕bì xiè
Latin pharmacognostic name: Dioscoreae Hypoglaucae seu Semptemlobae Rhizoma
Alternate Chinese names: 萆薢 bēi xiè
Kingdom: Plant
Origin in PRC Pharmacopoeia: Dioscorea hypoglauca Palib. (PRC Pharmacopoeia)
Origin (other sources): Dioscorea hypoglauca Palib.; Dioscorea collettii Hook. f.; Dioscorea tokoro Mak.; Dioscorea gracillima Miq.; Dioscorea futschauensis R. Kunth
Use: Medicinal
Category: Water-disinhibiting dampness-percolating agents / Urine-disinhibiting strangury-freeing agents
Properties: Bitter; balanced.
Channel entry: Liver, stomach, and bladder channels.
Indications:
- Disinhibits dampness and dispels turbidity: Unctuous strangury and white turbidity.
- Dispels wind and eliminates dampness: Wind-damp impediment patterns.
Dosage & Method: Oral: 10–15g in decoctions.
Warnings: To be used with care in kidney yīn depletion.
Notes: Some texts list mián bì xiè (绵萆薢, Dioscoreae Septemlobae seu Futschauensis Radix, from Dioscorea septemloba Thunb., and D. Futschauensis Uline ex R. Kunth) as an associated medicinal. It has the same actions and indications as bì xiè.
Quality: Evenly sized white slices are the best.
Product Area: Sìchuān, Húběi, Zhèjiāng.
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