Da Chai Hu Tang 
English Name:Major Buplurum Decoction.
Category: Formulas that Release Exterior-Interior Excess.
Functions: To harmonise Shaoyang Syndrome and purge interior Heat in Yangming syndrome.
Indications: Da Chai Hu Tang is indicated for use in the combined disease of Shaoyang and Yangming syndrome, typically marked by alternating chills and fever, vomiting and irritability. Other symptoms include bitter taste in the mouth, epigastric fullness, pain or stuffiness along with constipation or diarrhoea.
Tongue and Pulse: The tongue has a thick yellow coating and the pulse is wiry and forceful.
Ingredients:
- Chai Hu [Radix Bupleuri] – 15g
- Huang Qin [Radix Scutellariae] – 9g
- Bai Shao Yao [Radix Paeoniae Alba] – 9g
- Ban Xia [Rhizoma Pinelliae] – 9g
- Zhi Shi [Fructus Aurantii Immaturus] – 12g
- Da Huang [Radix et Rhizoma Rhei] – 6g
- Sheng Jiang [Rhizoma Zingiberis Recens] – 12g
- Da Zao [Fructus Ziziphi Jujubae] – 6 to 12pcs
Cautions and Contra-Indications: Da Chai Hu Tang is contra-indicated for patients with Spleen and Stomach deficiencies and in cases where where the Yangming disease is more prevalent that Shaoyang disease. When taking this formula, care should be taken to avoid eating cold or raw, pungent or spicy and oily or greasy food.