Ping Wei San
Star平胃散 (Calm the Stomach Powder)
Source: Tai Ping Hui Min He Ji Ju Fang (Song, 1107)
Last updated July 22, 2026
Description
Ping Wei San (Calm the Stomach Powder) is the foundational formula for dampness obstructing the Spleen and Stomach. It dries dampness, transforms turbidity, regulates Qi, and harmonizes the Stomach. As a base formula for Spleen-Stomach damp stagnation, it underlies many digestive formulas and is clinically essential for gastrointestinal disorders characterized by heaviness, bloating, and dampness patterns.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
| Cang Zhu | 12g | 27.59% | Jun (Chief) | Strongly dries dampness and strengthens the Spleen |
| Hou Po | 9g | 20.69% | Chen (Deputy) | Moves qi, dries dampness, eliminates fullness and distention |
| Chen Pi | 9g | 20.69% | Zuo (Assistant) | Regulates qi and transforms dampness to revive the Spleen |
| Gan Cao | 4.5g | 10.34% | Shi (Envoy) | Tonifies the middle and harmonizes the formula |
| Sheng Jiang | 3g | 6.9% | Shi (Envoy) | Harmonizes the Stomach |
| Da Zao | 6g | 13.79% | Shi (Envoy) | Harmonizes the middle burner |
Total weight: 30g
Preparation
Originally powder; take with warm ginger water. As decoction: simmer 20–25 minutes with Sheng Jiang and Da Zao. Take warm before meals.
Dosage
Powder: 6g 3x/day. Decoction: 1 dose/day. Add Sheng Jiang to enhance anti-nausea effect.
Conditions Addressed
Related Formulas
Formula Network
Formulas that share herbs with this one — the closer to the centre, the stronger the match. Click a node to explore.
Similar Formulas by composition
Match score combines dosage-weighted composition (cosine, 70%) with shared-herb overlap (Jaccard, 30%).
Traditional formula information is for educational purposes only. Herbal formulas should be prescribed by a qualified practitioner — dosages and combinations are individualized and can interact with medications.
📝 Notes
Public notes from the community and your own private notes on Ping Wei San.
No notes yet.