In Xiao Chai Hu Tang, how is Chai Hu prepared?

• A. Fried in oil
• B. Unprocessed, 12g
• C. Ground into powder
• D. Steamed with rice

Answer: (B)

In this item, how the chief herb is prepared matters because its form directly affects how the formula moves qi and harmonizes the Shaoyang syndrome. Chai Hu in Xiao Chai Hu Tang is used in its unprocessed form, typically at 12 g. This raw preparation preserves its aromatic-bitter energy and its ability to gently lift and spread the exterior-interior barrier, helping the formula harmonize the half-exterior, half-interior condition it targets. Frying in oil would alter its energetic karakter and often shift its action toward dispersion or warmth; grinding into powder would change its release in the decoction; steaming with rice is not a standard preparation for this herb in this formula.