Akebia Fruit Classic Formulas — Natural Herb Library

Primary Actions

Soothes the Liver and regulates qi - Ba Yue Zha is classically used for hypochondriac pain, rib-side distention, chest constraint, and emotional qi stagnation.
Invigorates blood and alleviates pain - it is chosen when qi stagnation has created fixed or recurrent abdominal, hernial, or menstrual pain.
Disperses nodules and relieves constraint - traditional applications extend to breast or abdominal masses where stagnation dominates the presentation.
Promotes urination - some lineages use it for damp-heat or stone-type urinary difficulty, especially in larger supervised doses.

Qi-regulating formulas pair Ba Yue Zha with Xiang Fu or Chai Hu for rib-side pain, emotional constraint, and menstrual stagnation.
Lower-abdominal and hernia pain prescriptions combine it with Ju He, Yan Hu Suo, or Wu Yao when cold-stagnation and qi constraint are intertwined.
Stone and urinary-difficulty folk lineages may combine larger doses of Ba Yue Zha with Yi Yi Ren or other damp-draining herbs under supervision.

TCMWiki describes Ba Yue Zha as slightly bitter and neutral, entering the Liver and Stomach to soothe the Liver, regulate qi, invigorate blood, relieve pain, calm restlessness, and induce urination.
Me and Qi likewise frames it as a qi-regulating herb used when pain and distention arise from Liver constraint rather than from simple deficiency.