Dyers Woad Leaf is the dried leaf of Isatis indigotica Fort. (Fam. Cruciferae).

Action: To remove toxic heat. reduce heat in blood, and promote subsidence of eruptions.

Indications: High fever with impairment of consciousness and skin eruptions in epidemic diseases; jaundice; acute dysentery; mumps; inflammation of the throat, erysipelas, carbuncle.