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Zi Wan (紫菀), the root of Aster tataricus, descends Lung qi to stop cough and expels phlegm; gently warming and moistening, it is suitable for both acute and chronic cough.
Latin / Pharmaceutical Name
Aster tataricus (Radix Asteris)
Common English Name
Aster root
Taste
Bitter, sweet
Temperature
Slightly warm
Channels Entered
Lung
Actions & Functions
- Stops cough and expels phlegm
- Descends Lung qi
Indications
Cough with phlegm, whether acute or chronic, from cold or with some heat (in combination); and cough with difficult-to-expectorate sputum.
Dosage
4.5-9 g in decoction.
Common Combinations
With Kuan Dong Hua and Bai Bu for chronic cough.
Cautions & Contraindications
Use with caution in cough from yin deficiency with significant heat.
