Dan Nan Xing is the chief herb in which formula?

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Multiple Choice

Dan Nan Xing is the chief herb in which formula?

Explanation:
This item tests which herb drives the formula’s action—the chief herb that anchors its therapeutic effect. Qing Qi Hua Tan Wan treats phlegm-heat in the lungs, presenting as coughing with thick, often yellow phlegm and heat signs. Dan Nan Xing is the chief herb in this formula because its primary role is to vigorously transform phlegm and clear lung heat, providing the core mechanism that enables the other ingredients to clear heat, resolve phlegm, and guide qi downward. The other herbs in the formula support and complement this action, but without the strong phlegm-transforming effect of Dan Nan Xing, the formula wouldn’t address the lung-phlegm-heat pattern as effectively. Other formulas listed target different patterns: Liu Wei Di Huang Wan nourishes kidney yin deficiency; Gui Zhi Shao Yao Zhi Mu Tang addresses deficient-damp constraints with pain and stiffness; Du Huo Ji Sheng Tang treats wind-damp bi syndrome with a deficient foundation.

This item tests which herb drives the formula’s action—the chief herb that anchors its therapeutic effect. Qing Qi Hua Tan Wan treats phlegm-heat in the lungs, presenting as coughing with thick, often yellow phlegm and heat signs. Dan Nan Xing is the chief herb in this formula because its primary role is to vigorously transform phlegm and clear lung heat, providing the core mechanism that enables the other ingredients to clear heat, resolve phlegm, and guide qi downward. The other herbs in the formula support and complement this action, but without the strong phlegm-transforming effect of Dan Nan Xing, the formula wouldn’t address the lung-phlegm-heat pattern as effectively.

Other formulas listed target different patterns: Liu Wei Di Huang Wan nourishes kidney yin deficiency; Gui Zhi Shao Yao Zhi Mu Tang addresses deficient-damp constraints with pain and stiffness; Du Huo Ji Sheng Tang treats wind-damp bi syndrome with a deficient foundation.

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