Prepared Pinellia Tuber Chunks Classic Formulas … Natural Herb Library

Primary Actions

Dries dampness and transforms phlegm ... Zhi Ban Xia remains a core processed Ban Xia lane for copious phlegm, chest oppression, greasy coating, and a heavy obstructed middle burner.
Redirects rebellious Stomach Qi downward and stops vomiting ... it is widely used for nausea, retching, focal distension, and phlegm-fluids disturbing the Stomach.
Reduces phlegm causing dizziness or nodulation ... traditional use extends to phlegm misting the clear Yang and mixed phlegm-damp obstruction patterns.

Er Chen Tang ... classic damp-phlegm formula in which processed Ban Xia is a central drying and descending herb.
Xiao Ban Xia Tang ... simple anti-vomiting pairing with Sheng Jiang for rebellious Stomach Qi.
Wen Dan Tang and related phlegm-heat or phlegm-disturbance formulas ... processed Ban Xia is used for descending and harmonizing action.

Traditional Chinese medicine requires Ban Xia to be processed before internal use because the raw tuber is irritant and toxic.
Zhi Ban Xia is one of the major processed lanes discussed in materia medica teaching for drying dampness, transforming phlegm, and stopping vomiting.
Modern inference ... many studies discuss processed Pinellia broadly rather than distinguishing every pharmacy-grade preparation, so this record follows the local wedge-style Zhi Ban Xia dispensing lane.