Isatis Leaf (Daqingye)
| Pharmaceutical Name: | Folium Isatidis |
| Botanical Name: | Isatis indigotia Fort. |
| Common Name: | Isatis leaf |
| Source of Earliest Record: | Mingyi Bielu |
| art Used & Method for Pharmaceutical Preparations: | The leaves are gathered in summer or autumn and dried in the sun. |
| Properties and Taste: | Bitter and very cold |
| Meridian: | Heart, lung and stomach |
| Functions: | To clear heat and release toxins |
| Indications and Combinations: | 1. Sore throat, erysipelas, boils, carbuncles and furuncles. *Use with Scrophularia (Xuanshen) and Honeysuckle flower (Jinyinhua). 2. High fever with maculopapule. *Use with Moutan bark (Mudanpi). |
| Dosage: | 10-15 g |
| Cautions: | his herb is contraindicated in cases with weakness and cold in the spleen and stomach. |