Isatis leaf (Daqingye)

Pharmaceutical Name : Folium Isatidis

Botanical Name : Isatis indigotia Fort.

Common Name : Isatis leaf

Source of Earliest Record : Mingyi Bielu

Part Used & Method for Pharmaceutical Preparations : The leaves are gathered in summer or autumn and dried in the sun.

Properties & Taste : Bitter and very cold

Meridians : Heart, lung and stomach

Functions: To clear heat and release toxins

Indications & Combinations:
1. Sore throat, erysipelas, boils, carbuncles and furuncles. Isatis leaf (Daqingye) is used with Scrophularia (Xuanshen) and Honeysuckle flower (Jinyinhua).

2. High fever with maculopapule. Isatis leaf (Daqingye) is used with Moutan bark (Mudanpi).

Dosage: 10-15 g

Cautions & Contraindications: This herb is contraindicated in cases with weakness and cold in the spleen and stomach.