Source Dyers Woad Leaf is the dried leaf of Isatidis indigodica Fort.
Producing Areas Jiangsu, Anhui, Hebei, Henan and Zhejiang, etc.
Properties Bitter, Cold
Channels Heart, Stomach
•Reduces heat and relieves toxicity
For any type of febrile disease, especially for epidemic and contagious diseases, such as influenza, meningitis, and pneumonia. This herb clears toxins in any part of the body, with an affinity for treating the lung and the throat.
•Cools the blood and reduces skin macula
For skin eruptions and blotches from severe heat in the blood.
Usage and Dosage
10 – 15g is decocted for oral use, or 30 – 60g of the fresh is used directly.
Suitable amount of the pounded is used externally.
Notes Contraindicated for patients with asthenic cold of the spleen and stomach.
Keep in a dry, ventilated place. Protect from light.
Description of Quality Herb
The good one is integrated with a dark greyish green colour.
This medicinal material has different sources in different areas.
Daqingye used in Beijing, Hebei, Shandong, Liaoning and Shaanxi are dry leaves from Liaolan, Polygonum tinctorium Ait.
Daqingye used in Sichuan, Fujian, Guangxi are leaves from Malan, Strobilanthes cusia (Nees) O. Ktze.
Daqingye used in Jiangxi, Hunan, Hubei and Guangxi are leaves from Lubianqing, Clerodendrum cyrtophyllum Turcz.