Chái Hú (Bupleurum)
🌿- Primary Action Spreads Liver Qì and relieves stagnation.
- Secondary Action Raises Yáng Qì and resolves Shǎo Yáng disorders.
- Character Bitter, Acrid, Cool. Acts on GB, Liver, PC, SJ.
Bái Sháo (White Peony)
🌸- Primary Action Nourishes Blood and preserves Yīn.
- Secondary Action Calms Liver Yáng and "softens" the Liver.
- Character Bitter, Sour, Cool. Acts on Liver, Spleen.
The Dynamic of Dispersion & Collection
Chái Hú is Acrid and moving, ascending to disperse Liver stagnation. Bái Sháo is Sour and collecting, descending to nourish Liver Blood. Together, they ensure that the Liver Qì moves freely without becoming too "dispersed" or "exhausted."
Dynamic: Chái Hú releases the "Wood" tension while Bái Sháo ensures the "Earth" (Spleen) is protected and the Liver is hydrated enough to remain flexible.
Functional Synergy
How these herbs regulate the flow and substance of the Liver.
Pharmacology and Kinetics
Saponins and glucosides interacting for neurological and hepatic health.
| Parameter | Chái Hú (Bupleurum) | Bái Sháo (Peony) |
|---|---|---|
| Key Components | Saikosaponins (A, B, C, D), Quercetin. | Paeoniflorin, Albiflorin. |
| Biological Mechanism | Hepatoprotective; modulates the HPA axis (anti-stress). | Smooth muscle relaxant; regulates GnRH and sex hormones. |
| Action Type | Ascending, Dispersing (Qì-regulator). | Descending, Nourishing (Blood-regulator). |
| Metabolism | Saikosaponins are metabolized by gut microbiota into more active forms. | Rapidly absorbed but cleared quickly; benefits from repeated dosing. |
Formula Architecture
The backbone of Liver-harmonizing formulas.
| Formula Name | Context | Core Indication |
|---|---|---|
| Xiāo Yáo Sǎn | Standard Pair | Liver Qì stagnation with Blood Deficiency (Stress/PMS). |
| Sì Nì Sǎn | Equal parts | Cold extremities due to Qì stagnation (Frigid Extremities). |
| Chái Hú Shū Gān Sǎn | Strong Moving | Severe Liver Qì stagnation with hypochondriac pain. |