Herbs that Transform Phlegm and Stop Coughing

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How is Tian Nan Xing (arisaematis rhizoma) prepared in order to treat phlegm-heat?

Prepare with bile
Prepare ginger juice
Prepare with licorice
Prepare with honey

Tian Nan Xing is warm in temperature. When prepared with cow bile, it changes from warm to cool and is called Dan Nan Xing. Dan Nan Xing can be used to treat phlegm-heat.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 419 [Q852]