Formula

Major Order the Qi Decoction

大承氣湯da cheng qi tang
1 source

4 herbs·from Shanghan Lun (Treatise on Cold Damage)

In the Shanghan Lun (《傷寒論》) tradition, this formula is described for a Yangming-stage presentation: after purging, an anguished vexation in the chest with dry, hardened stool retained in the interior. The classical text notes it is appropriate only when such dry stool is genuinely present. A historical indication, not a modern diagnostic or treatment recommendation.

Source
传统主治（traditional context, not a modern clinical claim）：陽明病，下之，心中懊憹而煩，胃中有燥屎者，可攻。…

Shanghan Lun (Treatise on Cold Damage)《伤寒论》辨阳明病脉证并治·大承氣湯（证治条文·宋本238）

References
  • Self-authored English rendering of the classical formula name (pinyin + sense translation); not a verbatim excerpt, no modern proprietary source.
Composition
  • Rhubarb Root四兩（酒洗）
  • Magnolia Bark (Hou po)半斤（炙，去皮）
  • Immature Bitter Orange (Zhi shi)五枚（炙）
  • Pu xiao (crude mirabilite)三合
Citations
  • Shanghan Lun (Treatise on Cold Damage) · Zhang Zhongjing · 《伤寒论》辨阳明病脉证并治·大承氣湯（组成·宋本238）Cited from Shanghan Lun (Treatise on Cold Damage) for its composition.
  • Shanghan Lun (Treatise on Cold Damage) · Zhang Zhongjing · 《伤寒论》辨阳明病脉证并治·大承氣湯（证治条文·宋本238）；hash 锚 carrier 逐字唯一片段（含方名/组成上下文）Cited from Shanghan Lun (Treatise on Cold Damage) for its traditional indications.
  • Shanghan Lun (Treatise on Cold Damage) · Zhang Zhongjing · 《伤寒论》辨阳明病脉证并治·大承氣湯（煎服法·宋本238）Cited from Shanghan Lun (Treatise on Cold Damage) for its preparation & usage.