Pharmaceutical Name:

Radix et Rhizome Stauntoni

Botanical Name:

Cynanchum stauntoni (Decne.) Schltr. Ex. Levl.
Dynanchum glaucescens Hand.-Mazz.

Common Name:

Cynanchum Root
Swallowwort Rhizome

Source of Earliest Record:

Mingyi Bielu

Part Used & Method for Pharmaceutical Preparations:

The roots are dug in autumn, cleaned and dried in the sun and cut into pieces.

Properties and Taste:

Pungent, sweet and neutral

Meridian:

Lung

Functions:

To resolve phlegm and stop cough
To conduct qi downward

Indications and Combinations:

1.     Cough due to invasion by exogenous pathogenic factors.
*Use with Schizonepeta (Jingjie) and Platycodon root (Jiegeng) in the formula Zhisuo San.

2.     Turbid phlegm blocking the lungs:

a)       Cold-phlegm cough.
*Use with Pinellia tuber (Banxia) and Perilla seed (Suzi).

b)       Phlegm-heat cough.
*Use with Trichosanthes fruit (Gualou).

3.     Cough, asthma, edema and rattling sound in the throat.
*Use with Aster root (Ziwan) and Peking spurge root (Daji) in the formula Baiqian Tang.

Dosage:

3-10 g