Li Zhong Wan 理 中
Wu Zhu Yu Tang 吳 茱 萸 湯
Xiao Jian Zhong Tang 小v 建 中 湯
Da Jian Zhong Tang 大 建 中 湯
Si Ni Tang 四 逆 湯
Source: Discussion of Cold Damage (c. 220)
Indication: Cold inversion, Shao Yin; Yang Collapse
Symptoms: Extreme cold in the extremities, aversion to cold, curling up when lying down, lethargy, constant desire to sleep. Also vomiting, diarrhea with undigested food particles, abdominal pain and cold, no thirst. Profuse cold sweating, pale face, weak breath, desire for warm water, sudden fainting
Tongue: pale, white slippery; Pulse: deep, thin, minute
Chapter 74 from Basic Questions states:Cold pernicious qi in the interior is treated with sweet, heating herbs assisted by bitter, acrid herbs, and if cold pernicious qi is victorious, it can be leveled by means of acrid heating herbs.
Si Ni Tang uses strong heating and acrid herbs to break through the yin and revive the yang. Fu Zi is especially effective in warming the ming men and propogating warmth throughout the body and to the extremities.