Gui Zhi Tang
Star桂枝汤 (Cinnamon Twig Decoction)
Source: Shang Han Lun — Zhang Zhongjing (Han, 220)
Last updated July 22, 2026
Description
Gui Zhi Tang (Cinnamon Twig Decoction) is the foundational formula of the Shang Han Lun and one of the most versatile formulas in TCM. It treats Tai Yang Wind-Cold deficiency pattern with spontaneous sweating, fear of wind, and fever — working by harmonizing Ying and Wei Qi rather than forcing sweating. Its harmonizing principle makes it applicable across a wide range of conditions.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
| Gui Zhi | 9g | 20% | Jun (Chief) | Warms and releases exterior, promotes Yang Qi and Wei Qi circulation. |
| Bai Shao | 9g | 20% | Chen (Deputy) | Nourishes Ying Qi, astringes fluids, moderates Gui Zhi. |
| Sheng Jiang | 9g | 20% | Zuo (Assistant) | Warms Stomach, assists Gui Zhi, stops nausea. |
| Da Zao | 12g | 26.67% | Zuo (Assistant) | Tonifies Spleen Qi, assists Bai Shao to nourish Ying Qi. |
| Gan Cao | 6g | 13.33% | Shi (Envoy) | Harmonizes all herbs, moderates pungent heat. |
Total weight: 48g
Preparation
Decoct 20–25 minutes. Take warm with warm rice porridge. Avoid cold, raw, fatty, alcoholic foods.
Dosage
Take warm with warm rice porridge. Cover with blankets. Stop once gentle sweating occurs.
Conditions Addressed
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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.
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