Yu Ping Feng San
玉屏风散 (Yu Ping Feng San)
Source: Dan Xi Xin Fa (Teachings of Dan-xi) — Zhu Danxi (Yuan, 1347)
Description
Yu Ping Feng San (Jade Windscreen Powder) is the classic formula for strengthening Wei Qi and consolidating the exterior to prevent recurrent illness. The formula creates a 'jade windscreen' against pathogenic invasion by tonifying Spleen and Lung Qi while consolidating the exterior. It is essential for immune deficiency, recurrent colds, and spontaneous sweating from Wei Qi deficiency.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
| Bai Zhu | 9g | 33.33% | Chen (Deputy) | Tonifies Spleen Qi (source of Wei Qi), dries dampness. |
| Fang Feng | 6g | 22.22% | Shi (Envoy) | Releases exterior, guides Huang Qi to the exterior, without depleting Wei Qi. |
| Huang Qi | 12g | 44.44% | Jun (Chief) | Tonifies Wei Qi and Lung Qi, consolidates exterior, stops sweating. |
Total weight: 30g
Preparation
Can be taken as powder with warm water. As decoction: simmer 20–25 minutes and take warm.
Dosage
Powder: 6–9g 2–3x/day. Decoction: 1 dose/day. Long-term preventive use is appropriate.
Similar Formulas by composition
Match score combines dosage-weighted composition (cosine, 70%) with shared-herb overlap (Jaccard, 30%).