Medicinals
dà qīng yè / 大青叶 / 大青葉 / isatis leaf;
Latin pharmacognostic name: Isatidis Folium
Alternate English names: woad leaf
Alternate Chinese names: 大青 dà qīng
Origin: Plant
Use: medicinal
Category: Heat-clearing agents / Heat-clearing toxin-resolving agents
Properties: Bitter, salty; cold.
Channel entry: lung, stomach, and heart channels.
Indications:
- Clears heat and resolves toxin; cools the blood and disperses macules: Warm heat disease and externally contracted wind-heat patterns.
- Clears fire and resolves toxin; disinhibits the throat and disperses swelling: Exuberant heat toxin in the blood causing cinnabar toxin (erysipelas),
mouth sores , or painful swollen throat.
Dosage & Method:
Oral: 10–15g in decoctions. Also used externally.
Warning:
Contraindicated in spleen-stomach vacuity cold.
Quality:
Large leaves without petioles are the best.
Product Area:
Héběi, Jiāngsū, Húnán, Jiāngxī.
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