Chief herbs in Yue Ju Wan?

• A. Ban Xia
• B. Ze Xie
• C. Zhu Ling
• D. Cang Zhu & Chuan Xiong

Answer: (D)

Yue Ju Wan centers on relieving stagnation by opening the flow of qi and clearing dampness that binds and distends the chest, abdomen, and sides. The herbs chosen as chief are those that directly promote qi movement and dampness resolution, setting the stage for the other components to harmonize the disharmony.

Cang Zhu plays a key role by drying dampness and strengthening the spleen, which reduces the energetic heavy, obstructive dampness that traps qi. It helps to restore the middle burner’s ability to circulate qi smoothly. Chuan Xiong moves qi and blood, especially along the liver channel, which helps dissolve stagnation and alleviates the pain and fullness that result from obstruction. Together, they address the two main aspects of Yue Ju Wan’s stagnation pattern—dampness and qi/blood stagnation—making them the principal herbs.

Ban Xia is valuable for transforming phlegm and addressing focal distention, but it works more as a supporting component to modify phlegm and guide the other herbs, rather than being the chief driver of the formula’s action. Ze Xie and Zhu Ling target dampness through drainage in the urinary system, which is useful in damp-heat or full-water patterns but doesn’t directly advance qi movement to relieve stagnation as effectively as the chief pair.