Bu Zhong Yi Qi Tang
补中益气汤 (Bu Zhong Yi Qi Tang)
Source: Pi Wei Lun — Li Dongyuan (Jin-Yuan, 1249)
Description
Bu Zhong Yi Qi Tang (Tonify the Middle to Augment the Qi) is the primary formula for Spleen Qi deficiency with sinking of Qi. Developed by Li Dongyuan, it uniquely treats the failure of deficient Qi to maintain its lifting function, addressing organ prolapse, chronic diarrhea, and the unusual presentation of low-grade fever from deficiency. Its uplifting action is achieved through Chai Hu and Sheng Ma combined with potent Qi tonics.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
| Ren Shen | 9g | 13.04% | Chen (Deputy) | Powerfully tonifies Yuan Qi, strengthens Spleen. |
| Bai Zhu | 9g | 13.04% | Chen (Deputy) | Tonifies Spleen Qi, dries dampness. |
| Gan Cao | 9g | 13.04% | Chen (Deputy) | Tonifies Qi, harmonizes middle burner. |
| Dang Gui | 9g | 13.04% | Zuo (Assistant) | Nourishes Blood, prevents dryness from Qi tonification. |
| Chen Pi | 6g | 8.7% | Zuo (Assistant) | Regulates Qi, prevents stagnation, awakens Spleen. |
| Sheng Jiang | 6g | 8.7% | Shi (Envoy) | Warms middle, directs Qi upward. |
| Da Zao | 6g | 8.7% | Shi (Envoy) | Tonifies Spleen Qi, harmonizes formula. |
| Huang Qi | 15g | 21.74% | Jun (Chief) | Tonifies Spleen and Stomach Qi, raises Yang, consolidates exterior. |
Total weight: 69g
Preparation
Decoct in water 25–30 minutes. Take warm on empty stomach morning and evening.
Dosage
Decoction: 1 dose/day. Pills: 6–9g twice daily. Long-term use often required for prolapse.
Similar Formulas by composition
Match score combines dosage-weighted composition (cosine, 70%) with shared-herb overlap (Jaccard, 30%).