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Aster Root (Zi Wan)

Pharmaceutical Name:

Radix Asteris

Botanical Name:

Aster tataricus L. f.

Common Name:

Aster root
Purple aster root

Source of Earliest Record:

Shennong Bencao Jing

Part Used & Method for Pharmaceutical Preparations:

The roots, or rhizomes, are dug in spring or autumn. Then they are cleaned, dried in the sun and cut into pieces.

Properties and Taste:

Bitter, sweet and slightly warm.

Meridian:

Lung

Functions:

To resolve phlegm and stop cough

Indications and Combinations:

Cough:

a)       Cough due to invasion by exogenous pathogenic factors manifested as cough with profuse sputum.
*Use with Schizonepeta (Jing jie) and Swallowwort (Bai qian).

b)       Cough due to deficiency of the lungs manifested by scanty sputum or with bloody sputum.
*Use with Anemarrhena rhizome (Zhi mu), Tendrilled fritillary bulb 
(Chuan bei mu) and Donkey hide gelatin (E jiao) in the formula Ziwan Tang
.

Dosage:

5-10 g