Radix Cynanchi Atrati


The root and rhizome of Cynanchum atratum Bunge or C versicolor Bunge, fimily Asclepiadaceae.

Crude drugs somewhat horse's tail-shaped, 10-15 cm long. Rhizome stout. tubercular, transversely growing, with circular stem traces at the upper part and numerous slender roots growing in cluster at the lower. Root 0. l~O.2 cm in diameter, grey-yellow and fragile. Prepared as segments. Bitter and salty in taste, cold in nature, and attributiye to stomach and liver channels.

1. Lower asthenic fever: For seasonal febrile disease involving. yinfen with pmlonged fever or high fever at night subsiding in the morning, infantile summer fever, postpartum fever, etc., usually used together with Cbrtex Lycil Radicis, Herba Artemisiae AflflNae, etc.
2. Let out the evil factors from the body surface: For common cold with prolonged fever, especially those with yin deficiency.
3. Promote diuresis and relieve stranguria: For stranguria of heat type, and stranguria complicated by hematuria.

Pharmacological Action
An active component contained in its root, cynanchol, can lower fever and promote diuresis.

Administration Decoction: 3-9g.


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Mr. Wang Tao

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