。甘草倍桂枝者,并益中气而和三物也。曰枳实薤白桂枝汤。胸痹是病名,下乃详言其证,
以胸痹有不同也。气至于结,胸至于满,薤栝力有不逮矣。故更以桂枝佐薤白散结,浓朴佐
栝蒌泄满。枳实用为君者,所以平胁逆也。曰竹叶汤。此中风由寒化热,将由太阳入阳明而
真阳适虚之证。桂枝解表化气,以铲寒邪之根。只用一两者,以病本无汗,多则侵葛防发散
之权也。
桂枝用二两之方,曰麻黄汤。桂枝所到之处,皆麻黄所到之处。既用麻黄又加桂枝,愚
于麻黄已略着其说,试更申之∶伤寒之邪,锢闭营卫,至于头痛身痛腰痛骨节痛,发之既暴
而所及复广,非得横厉无前之麻黄,不足以戡定祸乱。非得从容不迫之桂枝,不足以搜捕余
孽。且麻黄性刚,桂枝性柔,以刚遇柔,并能少节其性,不致直前罔顾。桂枝只二两者,以
倚重在麻黄也。曰桂枝加黄 汤。此段叙黄汗之证甚杂,注家亦颇颟顸。大抵营卫之间,水
与热交蒸而滞其行度,非挟寒挟虚不尔。欲温经化气以泄黄汗而取正汗,自惟桂枝汤为当。
第桂枝汤所治为卫强,此则卫弱,故加黄 益卫气而疏之。更减桂芍以节其内向而外交于卫,
斯邪不能容而正乃复矣。桂芍黄 三味,为黄汗必需之药。彼 芍桂酒汤,多其数而又重加
苦酒者,以脉沉非此不能泄邪也。曰浓朴七物汤。桂只二两加生姜用至五两,则散寒之力优,
不致因桂留邪矣。表里兼治,故以大枣安中,甘草和之。草不炙者,以有小承气攻里,不宜
过守也。姜多枣少者,病非自汗,不以补表也。曰茯苓甘草汤。伤寒汗出而渴者,五苓散主
之。汗出属表邪未尽,渴则太阳之邪已由标传本,以五苓散表里两解之,其小便不利可知。
此与脉浮小便不利微热消渴与五苓散者,正复无异。下云不渴者茯苓甘草汤主之,是明指尚
有表邪而言。不渴则胃不热而水停于上,又与真武汤及茯苓桂枝白术甘草汤之汗出液虚,肾
水上救相似,不过有微甚之分耳。彼甚此微,故但以茯苓一味消心下之水,桂甘生姜解其表
邪,即无他虑。桂甘少用者,并辅其扶心阳治悸也。无芍药者,邪已传本,若再敛之,则表
不解也。无大枣者,茯苓少则肾不伤,不必滋液也。曰茯苓泽泻汤。胃反由胃中虚冷,桂枝
协生姜散寒,协甘草温中。以治在上焦,故只用二两。余详茯苓。曰桃核承气汤。此于外解
后用之,桂枝岂为解表而。设太阳传本,热与血结而为少腹急结,桃仁黄硝,皆所以攻之。
气为血帅,气行而血乃行,故以桂枝入膀胱化气。甘草则甘以缓急也。桂只二两,何以能入
膀胱?以大黄辈得之则与俱下,且多则助膀胱之热也。曰桂枝加葛根汤。葛根治项背强
KTKT ,义详葛根。葛根汤与此只麻黄一味有无之分,以彼为无汗恶风,此为汗出恶风
也。
太阳病汗出恶风,桂枝汤正其所宜。惟加葛根以治项背强KT KT ,则以解肌起阴气为重,
和营卫次之,故桂芍减桂枝汤各一两。曰温经汤。桂枝少则疏通经脉,约以芍药,则能入下
焦化气。用姜不用枣者,不以补表也,余详吴茱萸。曰木防己汤。膈属肺胃肾三焦之脉所历。
支饮横于膈间,滞其肺胃之气,则喘、则满、则心下痞坚;下与肾相感召,则肾气上乘,而
面色黧黑;脉得沉紧,病固不独在上也。防己外白内黄,有黑纹如车辐,气味辛平,能行膈
间之水,由三焦以下输于肾,肾得之则气平。佐以桂枝,一苦一辛以散结,则心下之痞坚去。
然停饮至数十日之久,肺胃已郁而成热,非泄热则喘满不止,故又佐以石膏。吐下之后,中
气与津液大亏,故又佐以人参。又云虚者即愈,实者三日复发,虚与实皆指肾气而言。肾虚
则肺降而肾安,实则非咸寒以利之,淡渗以伐之,气必复上。注家不知其证之关肾,好为影
响之谈,那得于药证有合。
桂枝用二两半之方,曰薯蓣丸。风气百疾,盖即风虚之证,久踞于肌肉筋节间,而非初
感之可以汗解者也。虚劳诸不足,乃其病根所在。方以补虚为主,驱风次之。薯蓣人参白术
甘草地黄麦冬阿胶大枣,填补者也。余十三味,疏瘀郁、调阴阳,以补虚而驱风者也。其真
正风药,只防风一味耳。填补中兼能驱风者,以薯蓣为最,故君之。
桂枝用三两之方,曰桂枝生姜枳实汤。心中痞悬痛,与胸痹痛有别,故不用瓜栝薤白。
悬痛由下有逆上之气,使痛不得下,如物之空悬,其为心阳不布,阴邪得以窃据无疑。故用
姜桂各三两,以伸阳而散邪。诸逆不离乎肝,枳实酸入肝而苦降逆,逆降则痛除而心阳得复
矣。曰防己茯苓汤。桂枝得防己黄 ,则能行皮肤之水。重加茯苓者,引三物下降,使由小
便去也。水在皮肤,下之速则有遗邪,故加甘草以缓之。曰苓桂术甘汤。痰饮者寒饮也,心
阳不足,痰饮得以窃据膈间,故胸满。木得水而风动,土不能为之防,故胁满而目亦眩。满
曰支者,明满之由肝来也。以桂甘益心阳而化气,白术崇脾土而燥湿,茯苓则自心下导饮而
泄之,此治寒饮之主方也。曰桂枝去芍药加蜀漆龙骨牡蛎救逆汤。此与桂枝龙骨牡蛎汤治无
大异。惟惊狂起卧不安,较烦躁尤重,故桂甘龙牡皆倍增之。彼无表邪,而此则脉浮,故加
蜀漆协桂枝以散邪。既解其表,必补其表,故加姜枣以和营卫。用桂枝汤而必去芍药者,以
不汗出也。曰栝蒌桂枝汤。仲圣于桂枝加葛根汤,云反汗出恶风,此云脉反沉迟,反字自宜
着眼。盖太阳证备,必身热头痛汗出,脉不应沉迟而沉迟,故云反。柔痉原有沉迟之脉,故
又以此为痉而申明之。证皆桂枝汤所有,故用桂枝汤全方,身体强KT KT 然,则非痉不
尔。加栝蒌不加葛根者,即体强与项强之别。其濡养筋脉以治强直,则二物一也。曰乌头桂
枝汤。寒疝、腹中痛、逆冷、手足不仁、若身疼痛,若者及也,非或然之词,以身疼痛为表
证,故加一若字以别之。此表里伤于寒邪之重者,乌头驱表里之寒,桂枝汤化表里之气,互
相为用。乌头以蜜煎,则毒解而性和。桂枝汤用治腹痛亦散表邪,故芍药不再加。桂枝汤与
乌头均浓煎,而得蜜之甘润,则补中缓急,处处皆弥纶无间。故其知也如醉状,而邪则吐之,
岂灸刺诸药所能及欤。曰黄 桂枝五物汤。血痹阴阳俱微,桂枝汤调阴阳有余而通痹不足。
故加黄 以疏卫,增生姜以宣阳。义主理虚,而守补太过,则非血痹所宜,故甘草去之。无
表邪,故不取汗不温复。与桂枝加黄 汤,似同而实异者此也。曰泽漆汤。此与浓朴麻黄汤,
皆外寒与内饮相搏而咳者。脉浮者表邪方盛,故重与解表。此咳而脉沉,非无表邪,但轻微
耳。彼用麻杏,此用桂姜,犹麻黄汤桂枝汤之分伤寒中风也。饮亦彼重此轻,故彼用半夏六
升,此用半升。彼热邪在肺,故加石膏,此热邪较下,故加黄芩。彼治咳用姜辛五味,即小
青龙成法,水停在上。此水不上乘,故但以泽漆紫参白前降逆导饮而咳亦止。邹氏释泽漆至
精,谓能使水气还归于肾,是用泽漆亦与用五味有微似之处。然则彼无人参何为?彼所治皆
一气外散。人参乃止咳善后之策,于散寒蠲饮无与也。此则表里分投,上下背驰,安得不以
人参调和之。曰白虎加桂枝汤。尤氏释此方极当。惟以桂枝为因而达之,颇涉颟顸,不如赵
氏疗骨节痹痛之说。然不发明伏气,亦犹之泛也。盖寒邪伏于肾脏,至春夏发出,虽已无寒
但热,而骨节烦疼,则仍是根株未拔。肝主筋,诸筋皆属于节,桂枝亦肝药,故加桂枝以搜
骨节烦疼之伏邪。否则但以白虎治热,疟终不服也。曰侯氏黑散。大风有菊花防风辈任之,
桂枝是与川芎当归治心中恶寒。曰当归四逆汤。厥阴病血虚而寒中之,故手足厥寒脉细欲绝。
当
邪已及肾,故加细辛以驱肾寒,犹少阴病之兼肝药也。用桂枝汤而无姜者,恶其发散以伤阴
也。曰炙甘草汤。脉结代,是营血虚衰。心主营而生脉,故动悸。地麦胶麻,所以养营阴。
桂枝甘草,所以扶心阳。人参所以生脉。姜枣所以和营卫。然甘草协参枣,则又能补中。生
姜协桂草,则又能宣壅。枣草皆多于姜者,不使过散以伤神也。清酒煮者,欲引诸药以通络
也。曰桂枝加附子汤。此与桂枝去芍药加附子汤,只争芍药一味之出入。彼去芍药,为下后
脉促胸满。加附子为微恶寒。此四肢微急,难以屈伸,亦阳虚之象,不可无附子。汗漏不止
小便难,则表邪未尽而津液又亏矣。桂枝汤正治自汗和营卫之方,芍药极要,何可去之。曰
桂枝加浓朴杏仁汤。说详杏仁。曰防己地黄汤。说详防己。曰桂枝加芍药汤。此条注家泥于
太阳病医反下之句,又但以桂枝汤为太阳病解表之方。或云非脾脏之寒,或云和太阴之经,
或云发太阳之邪,或云越外入之邪,或云举误陷之邪,皆于是证是方,不关痛痒。太阳病误
下之后,至于腹满时痛,是已入太阴之脏矣。太阴为阴之至,决无升理。就证论证,焉得不
先救其药误。夫桂枝汤之为用甚多,或以本方略为增减,或只选二三味,或只用桂枝,以及
桂枝汤再加他药之或多或少,即证治悬殊,不得执太阳表邪为例。况以桂枝解表,遇无汗者
概不用芍药。今以芍药为少而再加一倍,岂尚存解表之见耶。大痛实者于此汤再加大黄一两
,宁非太阳病之陷入者,而得谓举邪使出耶。然则桂枝加芍药汤,断不必于解表致思。更有
可比例以明之者,小建中汤比桂枝加芍药汤,只多饴糖一味耳。千金再加当归,名内补当归
建中汤,其芍药亦仍是此数。前圣后贤,心心相印,未闻此两方亦发其表邪。夫太阴者阴脏
也,统血者也。为下药所苦,致阴气结而不舒,腹满时痛,芍药虽寒,而能破脾家血中之气
结,善治腹痛。然结固破矣,非有桂枝,则黍谷之春,终不得回。以桂枝有外心无内心,重
加芍药以敛之,则能入脾而不走表。且桂枝得生姜则散寒,得甘草大枣则补中,皆赖芍药为
之前导,故非用加一倍不可。结破中补而阳亦复,腹满时痛,恶能不愈,此满痛之治法。急
痛非小建中不可,以饴能缓急亦能助满,方剂自各有当也。徐忠可谓自究心金匮,用桂枝取
效,变幻出奇,不可方物。旨哉言乎。曰桂枝加龙骨牡蛎汤。愚以此为专治脉得诸芤动微紧
,男子失精、女子梦交之方,已于解天雄略及之。按用桂枝汤原方,必于桂枝汤所治有吻合
之处。脉芤动微紧,有阴阳乖迕之象。桂枝汤正所以和阴阳,阴阳乖迕,则精不守,神不藏
。龙牡能召阳敛阴,涩精安神,故加之也。
桂枝用四两之方,曰桂苓五味甘草汤。此支饮渍肺而咳,引动肾气,从下上冲,复从上
下流阴股,其多唾口燥及小便难时复冒诸端,皆因是而致。治以茯苓消饮,桂枝下冲,甘草
培中土以杜肾水之上乘,五味摄肾阴以召肺气之下降,证甚繁而药甚简,所谓握要以图也。
凡仲圣治寒饮之咳,无不以姜辛五味并用。兹有五味无姜辛,以姜辛助面热故去之,五味补
尺微故取之也。桂枝为下冲专药,虽助阳不得而避也。迨服之而冲气果低,反更咳胸满,正
当以桂枝治胸满矣。而转去桂加姜辛曷故,盖姜辛与五味本不能偏废,咳而胸满,咳治则胸
满亦治。加姜辛为与五味治咳也,面热本不宜桂枝,冲气低则去之便也。若茯苓蠲肺饮伐肾
邪,则断无可去之理矣。曰桂枝附子汤。伤寒至八九日,风寒之邪未尽,适遇阳虚之体,里
湿与外风相搏,遂致身体疼烦不能自转侧。脉浮为风,涩与虚为阳虚挟湿,阳虚而无别因,
故不呕不渴,此桂枝汤为解表必需之剂。阳虚则非附子扶阳不可,协桂枝又足以并驱风湿,
故加之。脉浮无汗则不宜敛,故去芍药。桂枝加桂枝汤一两者,重则能达下利小便也。曰甘
草附子汤。桂枝与附子,皆风寒风湿并治,惟附子尤能扶阳。此风湿相搏,阳虚之甚,非附
子不胜其任,故方名隐桂枝而标附子。以甘草冠首者,湿不宜人参,身肿又不宜姜枣,甘草
补中缓外,功不可没也。附子化湿而不能御湿,加白术者,崇土以御湿也。小便不利,并以
桂枝利小便,故多其数也。曰桂枝人参汤。此理中汤加桂枝也。理中为治霍乱寒多之方。此
数下致虚,虽挟热而利,脉必微弱(说本金鉴),当以寒多论治。干姜甘术,温中补虚,即
理中之成法。彼兼呕吐,故甘草生用以和胃;此利下虚甚,宜于守补,故甘草炙之而又多其
数。桂枝后煎而必用四两者,欲其解表而并散心下痞硬也。霍乱为上下不和,此为表里不和,
故均用人参以和之。曰桂枝甘草汤。发汗过多,伤其心气,致叉手冒心心悸欲按,与真武汤
汗后肾水上乘有他证者不同,只须补其心气,桂枝汤桂甘二味即属妙法。桂枝不以利小便而
亦用四两者,心气虚甚,非多不济,且轻扬之性,上虚则即归上,势固然也。曰茯苓桂枝甘
草大枣汤。桂枝甘草汤为汗后心悸欲按,此为汗后脐下悸,因同而证不同。彼必心气素亏,
In formulas where the dosage of Glycyrrhizae Radix et Rhizoma (Gancao) is doubled that of Cinnamomi Ramulus (Guizhi), it is to simultaneously tonify Middle Qi and harmonize the three herbs. This refers to Zhishi Xiebai Guizhi Tang (Aucklandiae and Macleaya Decoction with Cinnamon Twig). "Xiongbi" (Chest Bi Syndrome) is a disease name; the following text details its symptoms because Xiongbi presents differently. When Qi stagnation reaches its limit and chest fullness becomes severe, the power of Allii Tuberosi (Xiebai) and Trichosanthis Fructus (Gualou) is insufficient. Therefore, Cinnamomi Ramulus (Guizhi) is added to assist Allii Tuberosi (Xiebai) in dissipating nodulation, and Magnoliae Officinalis Cortex (Houpo) is added to assist Trichosanthis Fructus (Gualou) in draining fullness. Zizyphi Fructus (Zhishi) serves as the Sovereign herb to pacify rebellious Qi in the hypochondrium.
This refers to Zhuye Tang (Bamboo Leaf Decoction). This is a syndrome of Wind-Stroke transforming from Cold to Heat, about to transmit from the Taiyang (Greater Yang) channel to the Yangming (Bright Yang) channel, while the True Yang happens to be deficient. Cinnamomi Ramulus (Guizhi) releases the exterior and transforms Qi, thereby eliminating the root of Cold pathogenic factors. Only one liang is used because the underlying condition involves no sweating; excessive use would encroach upon the dispersing authority of Puerariae Radix (Gege) and Saposhnikoviae Radix (Fangfeng).
Formulas using two liang of Cinnamomi Ramulus (Guizhi) include Mahuang Tang (Ephedra Decoction). Wherever Cinnamomi Ramulus (Guizhi) reaches, Ephedrae Herba (Mahuang) also reaches. Since both Ephedrae Herba (Mahuang) and Cinnamomi Ramulus (Guizhi) are used, I have briefly explained this in my discussion on Ephedrae Herba (Mahuang); let me elaborate further: The pathogenic factor of Shanghan (Cold Damage) binds and closes Ying (Nutritive) and Wei (Defensive) levels, leading to headache, body pain, lower back pain, and joint pain. The onset is violent and widespread; only Ephedrae Herba (Mahuang), which charges forward relentlessly, is sufficient to quell the turmoil. Only Cinnamomi Ramulus (Guizhi), which acts calmly and composedly, is sufficient to hunt down residual pathogens. Moreover, Ephedrae Herba (Mahuang) has a rigid nature, while Cinnamomi Ramulus (Guizhi) has a soft nature. Meeting rigidity with softness allows them to slightly moderate each other's properties, preventing reckless advance without regard for consequences. Cinnamomi Ramulus (Guizhi) is used in a small dose (two liang) because reliance is placed primarily on Ephedrae Herba (Mahuang).
This refers to Guizhi Jia Huangqi Tang (Cinnamon Twig Decoction plus Astragalus). The description of Huanghan (Yellow Sweat) syndrome here is very complex, and commentators have been quite muddled. Generally, between Ying (Nutritive) and Wei (Defensive) levels, Water and Heat steam each other and obstruct their flow. This does not occur unless accompanied by Cold or Deficiency. To warm the meridians, transform Qi, drain Yellow Sweat, and obtain normal sweating, Guizhi Tang (Cinnamon Twig Decoction) is naturally the most appropriate. However, Guizhi Tang treats "Wei Excess," whereas this case involves "Wei Deficiency." Therefore, Astragali Radix (Huangqi) is added to tonify and disperse Wei Qi. The dosages of Cinnamomi Ramulus (Guizhi) and Paeoniae Radix Alba (Baishao) are reduced to restrain their inward direction and facilitate outward communication with Wei Qi, so that pathogens cannot reside and Zheng Qi (Upright Qi) can recover. Cinnamomi Ramulus (Guizhi), Paeoniae Radix Alba (Baishao), and Astragali Radix (Huangqi) are essential herbs for treating Yellow Sweat. In Shaoyao Guizhi Jiu Tang (Peony and Cinnamon Twig Wine Decoction), the quantities are increased and Vinegar (Ku Jiu) is heavily added because a deep pulse requires these to drain pathogens.
This refers to Houpo Qiwu Tang (Magnolia Bark Seven-Ingredient Decoction). Cinnamomi Ramulus (Guizhi) is used in two liang, while Zingiberis Recens Rhizoma (Shengjiang) is used up to five liang, making the cold-dispersing power superior and preventing pathogen retention due to Cinnamomi Ramulus (Guizhi). This treats both exterior and interior, so Jujubae Fructus (Dazao) is used to calm the Middle, and Glycyrrhizae Radix et Rhizoma (Gancao) to harmonize. Gancao is unroasted because Xiao Chengqi Tang (Minor Order the Yang Decoction) attacks the interior, making it unsuitable to be too retaining. More Ginger and fewer Dates are used because the condition is not spontaneous sweating, so it is not treated by tonifying the exterior.
This refers to Fuling Gancao Tang (Poria and Licorice Decoction). In Shanghan (Cold Damage), if there is sweating and thirst, Wuling San (Five-Ingredient Powder with Poria) is the primary treatment. Sweating indicates incomplete resolution of exterior pathogens; thirst indicates that the Taiyang pathogen has transmitted from the Biao (Mark) to the Ben (Root). Wuling San resolves both exterior and interior, implying urinary difficulty. This is identical to the previous case of floating pulse, urinary difficulty, slight fever, and thirst treated with Wuling San. The text below states, "If there is no thirst, Fuling Gancao Tang is used," clearly indicating that exterior pathogens remain. No thirst means the Stomach is not hot, and Water accumulates in the Upper Jiao. This resembles the syndromes of Zhenwu Tang (True Warrior Decoction) and Fuling Guizhi Baizhu Gancao Tang (Poria, Cinnamon Twig, Atractylodes Macrocephala, and Licorice Decoction) involving sweating, fluid deficiency, and Kidney Water rising, differing only in severity. The latter is severe, this one is mild. Thus, only Poria (Fuling) is used to eliminate Water under the heart, while Cinnamomi Ramulus (Guizhi), Glycyrrhizae Radix et Rhizoma (Gancao), and Zingiberis Recens Rhizoma (Shengjiang) resolve exterior pathogens, leaving no other concerns. Small doses of Guizhi and Gancao assist in supporting Heart Yang to treat palpitations. Paeoniae Radix Alba (Baishao) is absent because the pathogen has transmitted to the interior; further astringency would prevent exterior resolution. Jujubae Fructus (Dazao) is absent because a small amount of Poria does not injure the Kidney, so nourishing fluids is unnecessary.
This refers to Fuling Zexie Tang (Poria and Alisma Decoction). Weifan (Stomantic Regurgitation) is caused by Cold deficiency in the Stomach. Cinnamomi Ramulus (Guizhi) assists Zingiberis Recens Rhizoma (Shengjiang) in dispersing Cold and assists Glycyrrhizae Radix et Rhizoma (Gancao) in warming the Middle. Because the pathology is in the Upper Jiao, only two liang of Guizhi are used. For details, see Poria.
This refers to Taoheng Chengqi Tang (Peach Kernel Decoction to Order the Yang). This is used after the exterior is resolved. Is Cinnamomi Ramulus (Guizhi) for releasing the exterior? Assuming Taiyang transmits to the interior, Heat and Blood bind causing urgency and binding in the lower abdomen, Tao Ren (Peach Kernel), Dahuang (Rhubarb), and Mangxiao (Mirabilite) are used to attack. Qi is the commander of Blood; when Qi moves, Blood moves. Thus, Cinnamomi Ramulus (Guizhi) enters the Bladder meridian to transform Qi. Glycyrrhizae Radix et Rhizoma (Gancao) uses its sweet property to relieve urgency. Why does two liang of Guizhi enter the Bladder? Because Da Huang (Rhubarb) and similar herbs descend with it, and excessive use would assist Bladder Heat.
This refers to Guizhi Jia Gegen Tang (Cinnamon Twig Decoction plus Kudzu Root). Gegen (Kudzu Root) treats stiffness and tension in the neck and back; principles are detailed under Gegen. Gegen Tang differs from this formula only by the presence or absence of Ephedrae Herba (Mahuang). The former is for no-sweating aversion to wind; this one is for sweating aversion to wind.
For Taiyang disease with sweating and aversion to wind, Guizhi Tang (Cinnamon Twig Decoction) is appropriate. Adding Gegen (Kudzu Root) to treat neck/back stiffness prioritizes releasing the muscle layer and raising Yin Qi, with harmonizing Ying and Wei as secondary. Thus, Guizhi and Baishao are each reduced by one liang compared to standard Guizhi Tang.
This refers to Wenjing Tang (Warming the Meridians Decoction). A small dose of Guizhi unblocks meridians; combined with Baishao, it enters the Lower Jiao to transform Qi. Shengjiang is used instead of Dazao because it is not for tonifying the exterior. See Evodiae Fructus (Wuzhuyu) for details.
This refers to Mufangji Tang (Stephania Tetrandra Decoction). The Diaphragm is traversed by meridians of the Lung, Stomach, Kidney, and Sanjiao. Zhiyin (Fluid Retention in the Diaphragm) obstructs Lung and Stomach Qi, causing wheezing, fullness, and epigastric hardness. Downward interaction with the Kidney causes Kidney Qi to rise, resulting in dark complexion. A deep, tight pulse indicates the disease is not solely in the upper part. Fangji (Stephania Tetrandra) is white outside and yellow inside with black radial lines, has a pungent and neutral taste, and can move Water in the diaphragm, transporting it via Sanjiao to the Kidney, calming Qi. Assisted by Guizhi, one bitter and one pungent to dissipate nodulation, epigastric hardness resolves. However, fluid retention lasting dozens of days causes Lung and Stomach stagnation turning into Heat; without clearing Heat, wheezing and fullness persist, hence Shigypsum Fibrosum (Shigao) is added. After vomiting and purging, Middle Qi and Body Fluids are severely depleted, hence Renshen (Ginseng) is added. "Deficient cases heal, excess cases relapse in three days": Deficiency and Excess refer to Kidney Qi. Kidney Deficiency allows Lung Qi to descend and Kidney Qi to settle; Excess requires salty-cold to drain and bland-leaching to attack, otherwise Qi will rebound upward. Commentators fail to recognize the Kidney connection, offering vague theories incompatible with the formula.
Formulas using two and a half liang of Cinnamomi Ramulus (Guizhi) include Shuyu Wan (Dioscorea Pill). Fengqi Baiji (Wind Pathogens causing Hundred Diseases) refers to Wind-Deficiency syndromes lingering in muscles and joints, not initial exterior patterns resolvable by sweating. Xu Lao Zhu Bu Zu (Various Deficiencies of Chronic Debility) is the root cause. The formula focuses on tonifying deficiency,其次 on dispelling wind. Shuyu (Dioscorea), Renshen (Ginseng), Baizhu (Atractylodes Macrocephala), Gancao (Licorice), Dihuang (Rehmannia), Maidong (Ophiopogon), Ejiao (Donkey-hide Gelatin), and Dazao (Jujube) fill deficiencies. The remaining thirteen herbs resolve stasis, regulate Yin and Yang, tonify deficiency, and dispel wind. The true Wind-dispelling herb is only Fangfeng (Saposhnikovia). Among filling herbs that also dispel wind, Shuyu (Dioscorea) is best, serving as the Sovereign.
Formulas using three liang of Cinnamomi Ramulus (Guizhi) include Guizhi Shengjiang Zhishi Tang (Cinnamon Twig, Ginger, and Aucklandia Decoction). Epigastric blocking and hanging pain differ from Xiongbi pain, hence Gualou (Trichosanthes) and Xiebai (Allium) are not used. Hanging pain is caused by rebellious Qi from below preventing pain from descending, like a suspended object. This indicates Heart Yang failure allowing Yin pathogens to occupy. Thus, Shengjiang (Fresh Ginger) and Guizhi (Cinnamon Twig) at three liang each extend Yang and disperse pathogens. Rebellious Qi relates to the Liver; Zhishi (Zizyphi Fructus) enters the Liver via sourness and descends via bitterness. Descending rebellious Qi removes pain and restores Heart Yang.
This refers to Fangji Fuling Tang (Stephania and Poria Decoction). Guizhi combined with Fangji and Huangqi moves Water in the skin. Heavy use of Fuling (Poria) guides the three herbs downward for excretion via urine. Water in the skin, if attacked too quickly, leaves pathogens; thus Gancao (Licorice) is added to moderate.
This refers to Linggui Zhugan Tang (Poria, Cinnamon Twig, Atractylodes, and Licorice Decoction). Phlegm-Fluid is Cold-Fluid. Insufficient Heart Yang allows Phlegm-Fluid to occupy the diaphragm, causing chest fullness. Wood encountering water generates Wind; Earth fails to contain it, causing hypochondriac fullness and dizziness. "Zhi" (supporting) fullness indicates origin from the Liver. Guizhi and Gancao tonify Heart Yang and transform Qi; Baizhu (Atractylodes Macrocephala) strengthens Spleen Earth and dries Dampness; Fuling (Poria) drains Fluid from below the heart. This is the main formula for Cold-Fluid.
This refers to Guizhi Qu Shaoyao Jia Shuji Longgu Muli Jiuni Tang (Cinnamon Twig Decoction minus Peony plus Coscinium, Dragon Bone, and Oyster Shell Rescue Decoction). Similar to Guizhi Longgu Muli Tang, but Jingkuang (panic and mania) and restlessness are more severe than Fanza (irritability). Thus, Guizhi, Gancao, Longgu (Dragon Bone), and Muli (Oyster Shell) are doubled. The former lacks exterior pathogens; this one has a floating pulse, so Shuji (Coscinium) is added with Guizhi to disperse pathogens. After resolving the exterior, the exterior must be tonified, so Shengjiang (Ginger) and Dazao (Date) harmonize Ying and Wei. Shaoyao (Peony) is removed because there is no sweating.
This refers to Gualou Guizhi Tang (Trichosanthes and Cinnamon Twig Decoction). Zhang Zhongjing noted "reverse sweating and aversion to wind" in Guizhi Jia Gegen Tang. Here, "reverse deep and slow pulse" emphasizes the word "reverse." Taiyang syndrome typically presents with fever, headache, and sweating; a deep/slow pulse is abnormal, hence "reverse." Roujing (Soft Spasm) inherently has a deep/slow pulse, explaining the diagnosis. The syndrome matches Guizhi Tang, so the full formula is used. Body stiffness indicates spasm. Adding Gualou instead of Gegen distinguishes body stiffness from neck stiffness. Both nourish sinews to treat stiffness.
This refers to Wutou Guizhi Tang (Aconite and Cinnamon Twig Decoction). Hanhan (Cold Cramp), abdominal pain, cold limbs, numbness, and body pain: "Ruo" (if/also) indicates inclusion, not possibility. Body pain is an exterior sign, distinguished by "Ruo." This is severe Cold damaging both interior and exterior. Wutou (Aconite) drives out Cold from both; Guizhi Tang transforms Qi from both. Honey-cooked Wutou reduces toxicity and moderates nature. Guizhi Tang treats abdominal pain and disperses exterior pathogens, so Shaoyao is not added. Guizhi Tang and Wutou are decocted strongly with honey for sweetness and moistening, tonifying the Middle and relieving urgency seamlessly. The patient feels drunk, and pathogens are vomited out, surpassing moxibustion or other drugs.
This refers to Huangqi Guizhi Wuwu Tang (Astragalus and Cinnamon Twig Five-Ingredient Decoction). Xuebi (Blood Bi) involves deficiency of both Yin and Yang. Guizhi Tang regulates Yin/Yang excess but lacks efficacy for Bi obstruction. Huangqi (Astragalus) disperses Wei Qi; extra Shengjiang (Ginger) promotes Yang. The principle addresses deficiency; excessive tonification suits Blood Bi poorly, so Gancao is removed. No exterior pathogens mean no sweating or warming covers. This differs from Guizhi Jia Huangqi Tang.
This refers to Zeqi Tang (Codonopsis Decoction). Like Houpo Mahuang Tang, this treats cough from exterior Cold and interior Fluid conflict. Floating pulse indicates strong exterior pathogens, requiring heavy exterior release. This cough has a deep pulse, indicating mild exterior pathogens. The former uses Mahuang/Xingren; this uses Guizhi/Shengjiang, distinguishing Shanghan/Windstroke like Mahuang/Guizhi Tangs. Fluid retention is heavier in the former (Banxia 6 sheng vs. 0.5 sheng). Heat in Lung uses Shigao; lower heat uses Huangqin (Scutellaria). Former uses Jiang/Xin/Wuweizi (Xiao Qinglong method) for upper Fluid retention. This uses Zeqi, Zishen, Baiqian to direct Fluid downward, stopping cough. Zou's interpretation that Zeqi returns Water Qi to the Kidney is similar to Wuweizi. Why no Renshen in the former? It treats dispersed Qi; Renshen is for post-cough recovery, not Cold/Fluid dispersion. This formula targets both interior/exterior and upper/lower, requiring Renshen for harmony.
This refers to Baihu Jia Guizhi Tang (White Tiger Plus Cinnamon Twig Decoction). You's explanation is apt. Viewing Guizhi as a cause is muddled; Zhao's view on treating joint Bi is better. Without clarifying Fuqi (Latent Pathogen), it remains superficial. Cold latent in the Kidney emerges in Spring/Summer. Though only Heat remains, joint pain indicates unresolved roots. Liver governs sinews connected to joints; Guizhi enters the Liver, searching latent pathogens from joints. Otherwise, Baihu Tang alone won't cure malaria.
This refers to Houshi Heisan (Marquis Hou's Black Powder). Large Wind is handled by Juhua (Chrysanthemum) and Fangfeng. Guizhi, with Chuanxiong and Danggui, treats coldness in the heart.
This refers to Danggui Sini Tang (Angelica Decoction for Cold Extremities). Jueyin disease with Blood Deficiency and Cold invasion causes cold extremities and faint pulse. When pathogens reach the Kidney, Xixin (Asarum) drives Kidney Cold, similar to Shaoyin using Liver herbs. Guizhi Tang without Shengjiang avoids dispersing and injuring Yin.
This refers to Zhigancao Tang (Roasted Licorice Decoction). Jiedai (knotted and intermittent) pulse indicates Ying Blood deficiency. Heart governs Ying and generates pulse, causing palpitations. Dihuang, Maidong, Ejiao, and Mahuang nourish Ying Yin. Guizhi and Gancao support Heart Yang. Renshen generates pulse. Shengjiang and Dazao harmonize Ying and Wei. Gancao with Renshen/Dazao tonifies the Middle. Shengjiang with Guizhi/Gancao unblocks congestion. More Dates/Licorice than Ginger prevents excessive dispersal injuring Shen. Cooking with Qingjiu (Clear Wine) guides herbs to unblock collaterals.
This refers to Guizhi Jia Fuzi Tang (Cinnamon Twig Plus Aconite Decoction). Differs from Guizhi Qu Shaoyao Jia Fuzi Tang only by Shaoyao. The latter removes Shaoyao for post-purging rapid pulse and chest fullness, adding Fuzi for slight aversion to cold. This case has stiff limbs and difficulty bending, indicating Yang Deficiency requiring Fuzi. Unceasing sweating and difficult urination indicate incomplete exterior resolution and fluid depletion. Guizhi Tang treats spontaneous sweating and harmonizes Ying/Wei; Shaoyao is crucial and should not be removed.
This refers to Guizhi Jia Houpo Xingzi Tang (Cinnamon Twig Plus Magnolia Bark and Apricot Seed Decoction). See Xingzi for details.
This refers to Fangji Dihuang Tang (Stephania and Rehmannia Decoction). See Fangji for details.
This refers to Guizhi Jia Shaoyao Tang (Cinnamon Twig Plus Peony Decoction). Commentators cling to "Taiyang disease incorrectly purged" and view Guizhi Tang solely as an exterior-releasing formula. Views vary (not Spleen Cold, harmonizing Taiyin, releasing Taiyang, etc.), missing the point. Post-purging abdominal fullness and periodic pain indicate transmission to the Taiyin Zang. Taiyin is extreme Yin, incapable of ascending. Addressing the error first is necessary. Guizhi Tang applications vary widely; one cannot insist on Taiyang exterior principles. Exterior release with Guizhi excludes Shaoyao in no-sweat cases. Doubling Shaoyao here abandons exterior concepts. Adding Dahuang treats excess pain, confirming interior transmission rather than expelling exterior pathogens. Thus, this formula is not for exterior release. Comparing to Xiaojianzhong Tang (which adds Yitang/Maltose) and Neibu Danggui Jianzhong Tang (adding Danggui), neither releases the exterior. Taiyin is a Yin Zang governing Blood. Purging causes Yin Qi stagnation, abdominal fullness/pain. Although Shaoyao is cold, it breaks Qi stagnation in Spleen Blood, treating abdominal pain. Without Guizhi, recovery is impossible. Guizhi acts outwardly; heavy Shaoyao directs it inward to the Spleen. Guizhi with Ginger disperses Cold; with Gancao/Dazao tonifies the Middle. Shaoyao leads this process, necessitating double dosage. Breaking stagnation while tonifying restores Yang, curing fullness/pain. Acute pain requires Xiaojianzhong Tang because Yitang relieves urgency but may increase fullness; formulas have specific indications. Xu Zhongke's mastery of Guizhi in Jin Gui is remarkable.
This refers to Guizhi Jia Longgu Muli Tang (Cinnamon Twig Plus Dragon Bone and Oyster Shell Decoction). This treats Kun/Dong/Wei/Jin pulses, seminal emission in men, and nocturnal emissions in women. Using original Guizhi Tang implies matching its indications. These pulses indicate Yin-Yang discordance. Guizhi Tang harmonizes Yin-Yang; discordance causes loss of Essence and Spirit. Longgu and Muli gather Yang, astringe Yin, secure Essence, and calm Spirit.
Formulas using four liang of Cinnamomi Ramulus (Guizhi) include Guiling Wudi Gancao Tang (Poria, Cinnamon Twig, Schisandra, and Licorice Decoction). Zhiyin soaking the Lung causes cough, stirring Kidney Qi to rush upward and flow down to the inner thighs. Symptoms include salivation, dry mouth, urinary difficulty, and dizziness. Fuling drains Fluid; Guizhi directs downward rebellion; Gancao supports Earth to prevent Kidney Water ascent; Wuweizi secures Kidney Yin to call Lung Qi down. Complex syndrome, simple prescription, grasping the key. Zhang Zhongjing always uses Jiang/Xin/Wuweizi for Cold-Fluid cough. Here, only Wuweizi is used because Jiang/Xin aggravate facial heat, while Wuweizi treats weak Chi pulse. Guizhi is specific for rebellion; although it aids Yang, it is indispensable. If rebellion subsides but cough/fullness return, Guizhi should treat fullness. Instead, Guizhi is removed and Jiang/Xin added. Jiang/Xin and Wuweizi are complementary; treating cough treats fullness. Jiang/Xin aid Wuweizi in cough. Facial heat contraindicates Guizhi; removing it after rebellion subsides is convenient. Fuling and Wuweizi remain essential.
This refers to Guizhi Fuzi Tang (Cinnamon Twig and Aconite Decoction). After 8-9 days of Shanghan, Wind-Cold remains. In Yang-deficient constitutions, Interior Dampness and Exterior Wind collide, causing painful body stiffness. Floating pulse indicates Wind; choppy/deficient pulses indicate Yang Deficiency with Dampness. No vomiting/thirst confirms Yang Deficiency without other causes. Guizhi Tang is essential for exterior release. Fuzi is needed to support Yang and drive Wind-Damp. Floating pulse without sweating precludes astringents, so Shaoyao is removed. Increasing Guizhi by one liang enhances downward action and diuresis.
This refers to Gancao Fuzi Tang (Licorice and Aconite Decoction). Guizhi and Fuzi treat Wind-Cold/Damp, but Fuzio excels in supporting Yang. Severe Wind-Damp with extreme Yang Deficiency requires Fuzio. The formula highlights Fuzio over Guizhi. Gancao heads the formula because Ren Shen is unsuitable for Dampness, and Jiang/Dazao are unsuitable for edema. Gancao tonifies the Middle and moderates the exterior. Fuzio transforms but doesn't repel Dampness; Baizhu strengthens Earth to repel Dampness. Guizhi is increased to promote urination.
This refers to Guizhi Renshen Tang (Cinnamon Twig and Ginseng Decoction). This is Lizhong Tang plus Guizhi. Lizhong Tang treats Huoluan with predominant Cold. Frequent purging causes deficiency; despite heat, the pulse is weak, treated as Cold-dominant. Ganjiang, Gancao, Baizhu warm and tonify the Middle. Vomiting cases use raw Gancao to harmonize the Stomach; diarrhea cases use roasted Gancao in larger doses for retaining tonification. Guizhi is decocted last in four liang to release the exterior and dissipate epigastric hardness. Huoluan is Upper/Lower disharmony; this is Exterior/Interior disharmony, requiring Renshen for harmony.
This refers to Guizhi Gancao Tang (Cinnamon Twig and Licorice Decoction). Excessive sweating damages Heart Qi, causing hand-over-heart palpitations needing pressure. Unlike Zhenwu Tang's Kidney Water rising with other signs, this requires only Heart Qi tonification. Guizhi and Gancao are effective. Four liang of Guizhi is used not for diuresis but because severe Heart Qi deficiency requires large doses; its light nature rises to the deficient upper jiao naturally.
This refers to Fuling Guizhi Gancao Dazao Tang (Poria, Cinnamon Twig, Licorice, and Date Decoction). Guizhi Gancao Tang treats post-sweating palpitations needing pressure; this treats post-sweating umbilical palpitations. Same cause, different syndrome. The former implies chronic Heart Qi deficiency.