Which herb is the chief in Qing Qi Hua Tan Wan?

• A. Ban Xia
• B. Dan Nan Xing
• C. Gua Lou
• D. Huang Lian

Answer: (A)

Transforming phlegm and guiding dampness is the key action in this formula, so the chief herb must be the one that most directly accomplishes that transformation. Ban Xia is the classic phlegm-dispelling herb that dries dampness and dissolves phlegm, especially when phlegm is lodged in the chest or upper burner and obstructing the flow of qi. It also helps descend rebellious stomach qi, which aligns with the formula’s aim to clear phlegm-heat from the lungs while harmonizing the middle burner so the other herbs can work effectively. This central role of Ban Xia is why it’s considered the principal herb in Qing Qi Hua Tan Wan. The other herbs support by clear-heat, thin phlegm, or drain dampness, but they do not drive the main phlegm-transforming action the way Ban Xia does.