Radix Asteris

 

Source
The root and rhizome of Aster tataricus L.f., family Compositae

Characteristics
Rhizome appearing as irregular masses, 2-6 cm long. Apex with remnant of stem base and petiole, base with remnant of one rigid tap root which is surrounded by clustered fibrous roots, 3-15 cm long, 3 mm in diameter. Surface purple black, with fine longitudinal wrinkles. Roots often gathered as a plait. Soft in texture. Prepared as fragments. Acrid and bitter in taste, warm in nature, and attributive to lung channeL

Indition
Eliminate phlegm, relieve cough, nourish the lung and lower the adverse-rising energy: For non-productive cough with dyspnea, and chronic cough due to lung-deficiency with bloody sputum; also for cough of exogenous wind-cold type.

Pharmacological Action
1. Inhibiting the growth of some gram-negative bacteria and influenzae virus in vitro.
2. Its benzene and methyl alcohol extract exert an expectorant effect.

Administrtion Decoction: 3-9g.


   

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Mr. Wang Tao

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