于桂枝汤方内去桂,加茯苓、白术各三两,余根据桂枝汤法煎服,小便利则愈。
【按】
去桂去芍之义,详见上条经文下、正误文内。
【方解】
曰:余根据桂枝汤法煎服,谓根据桂枝汤法取汗也。小便利则愈,谓饮病必输水道始愈也
。此方即苓术甘汤,而有生姜大枣,其意专在解肌,利水次之,故用生姜大枣佐桂枝
以通津液取汗也。苓桂术甘汤,不用生姜、大枣,而加茯苓,其意专在利水,扶阳次
之,故倍加茯苓,君桂枝,于利水中扶阳也,所以方后不曰根据服桂枝汤法也。
伤寒若吐若下后,心下逆满,气上冲胸,起则头眩,脉沉紧,发汗则动经,身为振振
摇者,茯苓桂枝白术甘草汤主之。
【注】
伤寒若过发汗,则有心下悸,叉手冒心,脐下悸,欲作奔豚等证。今误吐下,则胸虚
邪陷,故心下逆满,气上冲胸也。若脉浮紧,表仍不解,无汗当用麻黄汤,有汗当用
桂枝汤,一汗而胸满气冲可平矣。今脉沉紧,是其人必素有寒饮相挟而成。若不头眩
,以瓜蒂散吐之,亦自可除。今乃起则头眩,是又为胸中阳气已虚,不惟不可吐,亦
不可汗也。如但以脉之沉紧为实,不顾头眩之虚,而误发其汗,则是无故而动经表,
更致卫外之阳亦虚,一身失其所倚,故必振振而摇也。主之以苓桂术甘汤者,涤余与
扶阳并施,调卫与和荣共治也。
在桂枝汤的方剂中,去掉桂枝,加入茯苓、白术各三两,其余按照桂枝汤的方法煎煮和服用,小便通利后病就好了。
【按语】
去桂枝、去芍药的含义,详见上一条经文下的“正误”文中。
【方解】
说:所谓“其余按照桂枝汤的方法煎煮和服用”,是指按照桂枝汤的方法取汗。所谓“小便通利后病就好了”,是指水饮之病必须通过水道排泄才能痊愈。这个方子就是苓术甘汤,但含有生姜和大枣,其用意主要在于解除肌表之邪,利水是次要的,所以用生姜、大枣辅助桂枝来通达津液以取汗。苓桂术甘汤,不用生姜、大枣,而增加茯苓用量,其用意主要在于利水,扶助阳气是次要的,所以加倍使用茯苓,以桂枝为君药,在利水中扶助阳气,因此方后不说“按照服用桂枝汤的方法”。
伤寒病如果经过催吐或泻下治疗后,出现心下部胀满逆气,气向上冲至胸部,起身时头晕目眩,脉象沉紧,如果此时再发汗则会扰动经脉,导致身体震颤摇晃,应当用茯苓桂枝白术甘草汤主治。
【注释】
伤寒病如果过度发汗,就会出现心下部悸动,双手交叉按压心前区,脐下部悸动,想要发作奔豚证等症状。现在误用催吐或泻下法,导致胸中虚损,邪气内陷,所以出现心下部胀满逆气,气向上冲至胸部。如果脉象浮紧,表证仍未解除,无汗时应当用麻黄汤,有汗时应当用桂枝汤,一次发汗后胸满和气上冲的症状就可以平息了。现在脉象沉紧,说明此人必定素有寒饮夹杂而成。如果不出现头晕,用瓜蒂散催吐,也可以自行消除。现在出现起身时头晕目眩,这又是胸中阳气已经虚损的表现,不仅不可用催吐法,也不可用发汗法。如果仅仅根据脉象沉紧认为是实证,不顾及头晕目眩所反映的虚证,而错误地发汗,那就是无故扰动经络和体表,更导致卫外阳气也虚损,全身失去依靠,所以必然会出现震颤摇晃的症状。主治用茯苓桂枝白术甘草汤,是因为该方能涤除水饮与扶助阳气同时进行,调和营卫与和解营气共同治疗。
Within the formula of Guizhi Tang (Cinnamon Twig Decoction), remove Guizhi (Cinnamon Twig), add Fuling (Poria) and Baizhu (Atractylodes Macrocephala Rhizome) each at three liang, and prepare and administer the remaining ingredients according to the method of Guizhi Tang. The illness will be cured when urination becomes smooth.
[Commentary]
The rationale for removing Guizhi (Cinnamon Twig) and Shaoyao (White Peony Root) is detailed in the "Correction of Errors" section under the previous verse.
[Analysis of the Formula]
It states: "Prepare and administer the remaining ingredients according to the method of Guizhi Tang," which refers to inducing sweating according to the method of Guizhi Tang. It states: "The illness will be cured when urination becomes smooth," meaning that water-fluid retention diseases must be resolved through the urinary pathway. This formula is essentially Lingzhu Gan Tang (Poria, Atractylodes, and Licorice Decoction), but contains Shengjiang (Fresh Ginger) and Dazao (Jujube). Its primary intent is to release the muscle layer; promoting diuresis is secondary. Therefore, Shengjiang (Fresh Ginger) and Dazao (Jujube) are used to assist Guizhi (Cinnamon Twig) in unblocking the fluids to induce sweating. In Linggui Zhugan Tang (Poria, Cinnamon Twig, Atractylodes, and Licorice Decoction), Shengjiang (Fresh Ginger) and Dazao (Jujube) are not used, but the amount of Fuling (Poria) is increased. Its primary intent is to promote diuresis; supporting Yang Qi is secondary. Therefore, Fuling (Poria) is doubled, and Guizhi (Cinnamon Twig) is used as the sovereign herb, supporting Yang Qi within the process of promoting diuresis. Hence, the post-formula instructions do not say "according to the method of taking Guizhi Tang."
In Taiyang disease, if emesis or purgation has been performed, leading to fullness and rebellious qi in the epigastrium, qi rushing up to the chest, dizziness upon standing, and a deep, tight pulse; if sweating is then induced, it will disturb the channels, causing the body to tremble and shake. Prolonging Gui Zhi Bai Zhu Fu Ling Tang (Poria, Cinnamon Twig, Atractylodes, and Licorice Decoction) is indicated.
[Annotation]
If Taiyang disease is over-sweated, symptoms such as palpitations in the epigastrium, crossing hands over the heart area, palpitations below the umbilicus, and impending Ben Tun (Rushing Pig) syndrome may occur. Now, due to erroneous emesis or purgation, the chest becomes deficient and pathogenic factors sink inward, resulting in fullness and rebellious qi in the epigastrium with qi rushing up to the chest. If the pulse is floating and tight, indicating the exterior remains unresolved, Ma Huang Tang (Ephedra Decoction) should be used if there is no sweat, and Guizhi Tang (Cinnamon Twig Decoction) if there is sweat; one instance of sweating would calm the chest fullness and upward rushing of qi. However, since the pulse is now deep and tight, it indicates that the person inherently suffers from cold fluid retention. If dizziness were absent, using Gou Ti San (Melon Spine Powder) to induce vomiting could also eliminate the condition. Now, because dizziness occurs upon standing, it indicates that the Yang Qi in the chest is already deficient. Not only is emesis contraindicated, but sweating is also contraindicated. If one mistakenly considers the deep, tight pulse as an excess pattern while ignoring the deficiency manifested by dizziness, and erroneously induces sweating, this would unnecessarily disturb the channels and exterior, further depleting the defensive Yang Qi. With the whole body losing its support, trembling and shaking inevitably result. Prolonging Gui Zhi Bai Zhu Fu Ling Tang (Poria, Cinnamon Twig, Atractylodes, and Licorice Decoction) is chosen because it simultaneously eliminates residual pathogens and supports Yang Qi, harmonizing Wei (Defensive) Qi and harmonizing Ying (Nutritive) Qi.