What is Indigo Naturalis (qing dai)?
What is indigo naturalis? The Chinese name is qingdai. It is a dried pigment of the leaves of the following plants: Baphieacanthuscusia, Indigofera tinctoria, Isatis tinctoria, Isatis indigotica and Polygonum tinctorium.
The salty qingdai has been traditionally used in the treatment of high fever in infectious sickness, eczema, chronic myelogenous leukemia, children epilepsy, vomiting blood, nose bleeding, bleeding from cuts, gum inflammation, mouth inflammation, sore throat, boils in the mouth or tongue, tonsillitis, inflammation of the roots of teeth, boils, insect or snake bites, and coughing.
It’s typically taken orally, but long-term use has been linked to stomach and liver problems.
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