In the West, processed pinellia root is mostly used in formulas for treating coughs and nausea. It is only available commercially in Traditional Chinese Medicine formulas.
In Traditional Chinese Medicine (TCM), pinellia is considered a key herb for Transforming Phlegm and Damp Cold. It is typically used in formulas to treat coughs, nausea, and anxiety stemming from Damp Cold and Phlegm. The raw (unprocessed and toxic) root is only used externally to treat skin sores.