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Alternate English names: baiqian cynanchum [rhizome]

Kingdom: Plant

Origin in PRC Pharmacopoeia: Cynanchum stauntonii (Decne.) Schltr. ex Lévl.; Cynanchum glaucescens (Decne.) Hand.-Mazz. (PRC Pharmacopoeia)

Origin in unofficial sources: Cynanchum stauntoni (Decne.) Schltr. ex Lévl.*; Cynanchum glaucescens (Decne.) Hand.-Mazz.*

Use: Medicinal

Category: Phlegm-transforming cough-relieving panting-calming agents / Phlegm-transforming agents

Properties: Sweet, acrid; slightly warm. (Some sources say bitter and slightly cold.)

Channel entry: Lung channel.

Actions and indications: Downbears qì and transforms phlegm: Cough with copious phlegm from a variety of causes, fullness in the chest and rapid panting.

Dosage and method: Oral: 3–10g in decoctions.

Quality: Thick rhizomes with long roots clean of earth are the best.

Production area: ānhuī, Zhèjiāng, Húnán.

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