治少阳受邪。往来寒热。脉弦。胁痛而呕。
柴胡（三钱） 黄芩 人参 甘草（炙。各一钱） 半夏（二钱） 生姜（五片）
大枣（四枚）
水煎。去滓。温服。 治伤寒有五法。曰汗。曰吐。曰下。曰温。曰和。皆一定之法。而少
阳例中小柴胡汤。专一和解表里。少阳为阴阳交界。邪传至此。已渐向里。故用柴胡升发其邪。
使从外解。即以人参挡截于中。不令内犯。更以半夏、黄芩清解在里之热痰。生姜、大枣并祛在
表之邪气。又须甘草协辅参、柴。共襄匡正辟邪之功。真不易之法。无容拟议者也。其方后加减
。乃法中之法。定而不移。至于邪气犯本。胆府受病。而加龙骨、牡蛎。丸药误下。而加芒硝。
屡下不解。引邪入里。心下急。郁郁微烦。而用大柴胡。为法外之法。变通无定。不可思议者也
。独怪世医用小柴胡。一概除去人参。且必加枳、桔耗气之品。此非法之法。习俗相承。匿于横
议者也。何怪乎道艺日卑。风斯日下哉。
柴胡加龙骨牡蛎汤（玉函） 治少阳经邪。误下犯本。胸满惊烦。
小柴胡汤去黄芩、甘草。加桂枝、茯苓、龙骨、牡蛎、铅丹、大黄。
柴胡加芒硝汤（玉函） 治少阳过经不解。
小柴胡汤加芒硝三钱。
大柴胡汤（玉函） 治寒热便秘。
小柴胡汤去人参、甘草。加芍药、枳实各一钱。大黄二钱。
四逆散（玉函） 治热邪传入少阴厥逆。
小柴胡汤去人参、半夏、黄芩、姜、枣。加枳实、芍药等。分为散。饮服方寸匕。日三服。
凡病各有真假。真者易见。假者难辨。差之毫厘。迥乎冰炭。试以伤寒之厥逆辨之。其始病便见
者为直中寒厥。五六日热除而见者为传经热厥。寒厥真而热厥假也。热厥之治。惟四逆散得之。
细推其邪。从阳入阴必由少阳而达。亦无不由太阴竟入少阴之理。故首推柴胡为来路之引经。亦
借以为去路之向导。用枳实者。扫除中道。以修整正气复回之路也。夫阴为阳扰。阳被阴埋。舍
和别无良法。故又需芍药以和其营。甘草以和其胃。胃气和而真阳敷布。假证愈而厥逆自除。但
方后加减纷庞。寒热互用。非随证而推逆顺之机。难以语此。如悸。加桂枝。小便不利。加茯苓
。泄利下重。加薤白。皆阴为阳扰。随其攸利而开泄之。咳利。加五味、干姜。腹痛。加附子。
是阳被阴埋。急须焕发以克复之。与厥阴例中。当归四逆加吴茱萸同法。须知真证正治。假证间
取。总不出此方之模范也。至若二经热邪亢极而厥。自有大承气下夺之法。又非四逆散、当归四
逆之和法可例治也。
柴胡去半夏加栝蒌汤（金匮） 治疟多渴。
小柴胡汤去半夏加栝蒌根。
柴胡桂枝干姜汤（玉函 金匮名柴胡桂姜汤） 治疟寒多微有热。
小柴胡汤去人参、半夏、姜、枣。加桂枝、干姜、栝蒌根、牡蛎。（熬）
柴胡桂枝汤（玉函） 治太阳少阳并病合病。寒热及疟。
小柴胡汤加桂枝、芍药。（即小柴胡汤合桂枝汤）
柴胡四物汤 治妇人经行感冒。热入血室。
小柴胡汤合四物汤。
柴胡枳桔汤（一名枳桔柴胡汤） 治少阳寒热痞满。
小柴胡汤加枳壳、桔梗。
增损柴胡汤 治少阳血虚。寒热不止。
小柴胡汤去黄芩。加川芎、芍药、陈皮。
柴胡清肝散 治怒火憎寒发热。肝胆风热疮疡。
小柴胡汤去半夏、姜、枣。加山栀、川芎、连翘、桔梗。
人参败毒散（局方） 治时疫初起发热。及感冒发散后热不止。
小柴胡汤去半夏、黄芩、大枣。加茯苓、羌活、独活、前胡、川芎、枳壳、桔梗。 问时疫
初起。用人参败毒。得毋助邪为虐之患乎。又何以治非时寒疫。汗后热不止。详此二者。一为全
盛之毒。一为未尽之邪。胡一方可混治耶。盖时疫之发。或值岁气并临。或当水土疏豁。种种不侔。
然必入伤中土。土主百骸。无分经络。毒瓦斯流行。随虚辄陷。最难叵测。亟乘邪气未陷时。尽力
峻攻。庶克有济。其立方之妙。全在人参一味。力致开阖。始则鼓舞羌、独、柴、前各走其经。
而与热毒分解之门。继而调御津精血气各守其乡。以断邪气复入之路。与桂枝汤中芍药护营之意
不殊。如桂枝人参汤、小柴胡汤、参苏饮。未尝不用人参以协济表药成功也。但其所主。惟天行
大头。乃为合辙。加荆、防、牛蒡、薄
荷。名荆防败毒。为捻颈瘟。咽喉肿痛之专药。即上二证。在热毒既陷以后。及北方黑骨温等。
总与此方无预也。至若伤寒传变之邪。伏气郁发之证。泾渭攸分。略无交涉。而先哲尝借以治寒
疫汗后余热往往获效者。以非时之邪混厕经中。屡行疏表不应。邪伏幽隐不出。非藉人参之大力
不能载之外泄也。逮至疫痢昏热口噤。亦宜此方加陈仓米引领入胃。则毒随药化。得非人参辅佐
之力欤。独怪近世医流。偏谓人参助长邪气。除去不用。专行群队攻发。鼓激壮火飞腾。不至竭
绝真阴不已。兹缘同学质问。因祖述以政。
荆防败毒散 治大头虾蟆瘟证。
人参败毒散加荆芥、防风、薄荷、牛蒡子。
仓禀汤 治疫痢发热。
人参败毒散加陈仓米一撮。
清脾饮 治食疟脉实。溺赤便秘。
小柴胡汤去人参。加白术、青皮、浓朴、草果。 按清脾饮。清理脾家痰气宿滞。及蕴积少
阳经中风热之邪。乃于小柴胡中除去人参。益入青皮、白术、浓朴、草果一派克削之味。在藜藿
之人。固为相宜。若膏粱豢养柔脆者。即有留滞。亦难胜此。用者审之。
治疗少阳经受邪。症见寒热往来，脉象弦细，胁肋疼痛且呕吐。
柴胡（三钱） 黄芩 人参 甘草（炙，各一钱） 半夏（二钱） 生姜（五片）
大枣（四枚）
用水煎煮，滤去药渣，温服。
治疗伤寒有五种方法：即发汗、催吐、攻下、温里、和解。这些都是固定的法则。而在少阳病证中，小柴胡汤专门用于和解表里。少阳是阴阳交界之处，邪气传至此地，已逐渐向里发展，所以用柴胡升发透散邪气，使其从体表解除；同时用人参在中焦拦截，防止邪气内侵；再用半夏、黄芩清解在里的热痰；生姜、大枣共同祛除在表的邪气。此外还需要甘草协助人参、柴胡，共同完成扶正祛邪的功效。这真是不可更改的定法，无需再作议论。至于方后的加减法，则是法中之法，确定而不移易。至于邪气侵犯根本，胆腑受病，而加入龙骨、牡蛎；因丸药误下，而加入芒硝；多次攻下不解，引邪入里，心下急迫，心中郁郁微烦，而使用大柴胡汤，这是法外之法，变通没有定规，不可思议。唯独奇怪的是世间的医生使用小柴胡汤时，一概除去人参，并且一定要加入枳实、桔梗这些耗气的药物。这不是正确的用法，而是习俗相承，隐匿于非议之中。难怪医术日益低劣，风气日渐败坏啊。
柴胡加龙骨牡蛎汤（出自《玉函经》） 治疗少阳经邪气，因误下导致邪气犯本，出现胸满、惊悸烦躁。
用小柴胡汤去掉黄芩、甘草，加入桂枝、茯苓、龙骨、牡蛎、铅丹、大黄。
柴胡加芒硝汤（出自《玉函经》） 治疗少阳病过经而不解。
在小柴胡汤中加入芒硝三钱。
大柴胡汤（出自《玉函经》） 治疗寒热交替伴便秘。
在小柴胡汤中去掉人参、甘草，加入芍药、枳实各一钱，大黄二钱。
四逆散（出自《玉函经》） 治疗热邪传入少阴导致的四肢厥冷。
在小柴胡汤中去掉人参、半夏、黄芩、生姜、大枣，加入枳实、芍药等，制成散剂，用饮服用方寸匕，每日三次。
凡是疾病都有真假之分，真证容易看见，假证难以辨别。差之毫厘，结果便如冰炭般截然不同。试以伤寒中的四肢厥冷来辨析：发病初期就出现的，属于直中寒厥；五六天后热退而出现厥冷的，属于传经热厥。寒厥是真证，热厥是假证。治疗热厥，只有四逆散合适。仔细推究其邪气，从阳入阴必然经过少阳才能到达，也没有不经过太阴竟入少阴的道理。所以首先推崇柴胡作为来路的引经药，也借它作为去路的向导。使用枳实的原因，是为了扫除中道的阻滞，以修整正气复回的道路。阴被阳扰乱，阳被阴埋没，除了和解别无良法。所以需要芍药来调和营血，甘草来调和胃气。胃气和顺则真阳敷布全身，假证痊愈而厥冷自然消除。但是方后的加减繁杂，寒热药互用，如果不根据证候推究逆顺的机理，很难与此谈论。如心悸，加桂枝；小便不利，加茯苓；泄利下重，加薤白。这都是因为阴被阳扰乱，随其有利的情况而开泄。咳嗽兼泄利，加五味子、干姜；腹痛，加附子。这是阳被阴埋没，急需焕发阳气以克复阴邪。这与厥阴病证中的当归四逆加吴茱萸汤治法相同。须知真证用正治法，假证间接受治，总不出这个方子的模范范围。至于若两经热邪亢极而导致厥冷，自有大承气汤攻下的方法，又不是四逆散、当归四逆汤这类和解法可以类推治疗的。
柴胡去半夏加栝蒌汤（出自《金匮要略》） 治疗疟疾多口渴。
用小柴胡汤去掉半夏，加入栝蒌根。
柴胡桂枝干姜汤（出自《玉函经》，《金匮要略》名为柴胡桂姜汤） 治疗疟疾寒多微有热。
用小柴胡汤去掉人参、半夏、生姜、大枣，加入桂枝、干姜、栝蒌根、牡蛎。（熬制）
柴胡桂枝汤（出自《玉函经》） 治疗太阳少阳并病合病，寒热及疟疾。
在小柴胡汤中加入桂枝、芍药。（即小柴胡汤与桂枝汤合并）
柴胡枳桔汤（一名枳桔柴胡汤） 治疗少阳寒热痞满。
在小柴胡汤中加入枳壳、桔梗。
增损柴胡汤 治疗少阳血虚，寒热不止。
在小柴胡汤中去掉黄芩，加入川芎、芍药、陈皮。
柴胡清肝散 治疗怒火憎寒发热，肝胆风热疮疡。
在小柴胡汤中去掉半夏、生姜、大枣，加入山栀、川芎、连翘、桔梗。
人参败毒散（出自《太平惠民和剂局方》） 治疗时疫初起发热，以及感冒发散后热不退。
在小柴胡汤中去掉半夏、黄芩、大枣，加入茯苓、羌活、独活、前胡、川芎、枳壳、桔梗。有人问：时疫初起，用人参败毒散，难道没有助长邪气为害的隐患吗？又怎么能治疗非时之寒疫，汗后热不退呢？详细分析这两种情况，一种是全盛时期的毒邪，一种是未尽的邪气，怎么可以用一个方子混治呢？大概时疫的发生，有时正值岁气并临，有时当水土疏豁，种种不同。然而必定会侵入损伤中土，土主百骸，不分经络，毒瓦斯流行，随虚处而陷入，最难预测。必须趁着邪气尚未陷入时，尽力峻猛攻伐，或许能有成效。此方立方的妙处，全在于人参一味药，力量足以致开阖。开始时鼓舞羌活、独活、柴胡、前胡各走其经，从而打开与热毒分解的门路；继而调御津液、精髓、血液、气机各自守住其乡，以断绝邪气复入的路径。这与桂枝汤中芍药护营的意思没有不同。如桂枝人参汤、小柴胡汤、参苏饮，未尝不用人参来协助表药取得成功。只是其所主治的，只有天行大头瘟，才算合乎辙理。加入荆芥、防风、牛蒡子、薄荷，名为荆防败毒散，是治疗捻颈瘟、咽喉肿痛专有的药物。即使上述两种证候，在热毒已经陷入以后，以及北方的黑骨温等病，总之与此方无关。至于伤寒传变的邪气，伏气郁发的证候，泾渭分明，毫无交涉。而先哲曾经借用此方治疗寒疫汗后余热往往获得疗效，是因为非时之邪混杂在经络中，屡次疏表无效，邪气潜伏幽隐不出，不借助人参的大力不能载之外泄。等到发生疫痢昏热口噤，也适宜此方加入陈仓米引领入胃，则毒随药化，难道不是人参辅佐的力量吗？唯独奇怪的是近世医流，偏说人参助长邪气，除去不用，专门使用群队攻发之药，鼓激壮火飞腾，不到竭绝真阴不止。这次因为同学的质问，于是祖述前人观点以此呈政。
荆防败毒散 治疗大头虾蟆瘟证。
人参败毒散加荆芥、防风、薄荷、牛蒡子。
清脾饮 治疗食疟脉实，溺赤便秘。
在小柴胡汤中去掉人参，加入白术、青皮、浓朴、草果。按语：清脾饮，清理脾家痰气宿滞，以及蕴积在少阳经中风热之邪，乃是在小柴胡汤中除去人参，增加进入青皮、白术、浓朴、草果一派克削的药物。对于吃粗茶淡饭的人，固然适宜。如果是膏粱豢养柔脆体质的人，即使有留滞，也难以承受此方。使用者需审慎。
Treats Shaoyang syndrome (Shaoyang disease) caused by pathogenic invasion. Symptoms include alternating chills and fever, wiry pulse, hypochondriac pain, and vomiting.
Chai Hu (3 qian), Huang Qin, Ren Shen, Gan Cao (roasted, each 1 qian), Ban Xia (2 qian), Sheng Jiang (5 slices), Da Zao (4 pieces).
Decoct in water, remove dregs, and take warm.
There are five methods for treating Shanghan (Cold Damage): sweating, emesis, purgation, warming, and harmonizing. These are fixed principles. In the case of Shaoyang, Xiao Chai Hu Tang (Minor Bupleurum Decoction) is specifically used to harmonize the exterior and interior. Shaoyang is the boundary between Yin and Yang; when pathogens transmit here, they gradually move inward. Therefore, Chai Hu is used to raise and disperse the pathogen, allowing it to resolve from the exterior. Ren Shen is used to intercept at the middle jiao, preventing internal invasion. Ban Xia and Huang Qin clear heat-phlegm within; Sheng Jiang and Da Zao dispel pathogens on the exterior. Furthermore, Gan Cao assists Ren Shen and Chai Hu to jointly achieve the goal of supporting healthy qi and expelling pathogens. This is indeed an unchangeable method, requiring no further discussion. The modifications listed after the formula are methods within methods, fixed and immovable. When pathogens invade the root and the Gallbladder organ is diseased, Long Gu (Dragon Bone) and Mu Li (Oyster Shell) are added. If mistaken purgation with pill medicine occurs, Mang Xiao (Mirabilite) is added. If repeated purgation fails to resolve the condition, drawing pathogens inward, causing urgency in the epigastrium and slight depression/irritability, Da Chai Hu Tang (Major Bupleurum Decoction) is used. This is a method beyond the standard rules, flexible and unpredictable. It is strange that modern physicians generally omit Ren Shen when using Xiao Chai Hu Tang and insist on adding Zhi Shi (Immature Bitter Orange) and Jie Geng (Platycodon Root), which deplete Qi. This is not the correct method but rather a custom passed down, hidden under criticism. No wonder medical skills decline daily and customs deteriorate.
Chai Hu Jia Long Gu Mu Li Tang (Bupleurum Plus Dragon Bone and Oyster Shell Decoction) [from *Yi Han Jing*]: Treats Shaoyang channel pathogens, where mistaken purgation causes pathogens to attack the root, resulting in chest fullness, palpitations, and irritability.
Xiao Chai Hu Tang minus Huang Qin and Gan Cao, plus Gui Zhi (Cinnamon Twig), Fu Ling (Poria), Long Gu, Mu Li, Qian Dan (Lead Monoxide), and Da Huang (Rhubarb).
Chai Hu Jia Mang Xiao Tang (Bupleurum Plus Mirabilite Decoction) [from *Yi Han Jing*]: Treats Shaoyang disease that has passed its course without resolution.
Xiao Chai Hu Tang plus Mang Xiao (3 qian).
Da Chai Hu Tang (Major Bupleurum Decoction) [from *Yi Han Jing*]: Treats alternating chills and fever accompanied by constipation.
Xiao Chai Hu Tang minus Ren Shen and Gan Cao, plus Shao Yao (Peony Root) and Zhi Shi (Immature Bitter Orange, each 1 qian), and Da Huang (2 qian).
Si Ni San (Four Reversal Powder) [from *Yi Han Jing*]: Treats cold extremities due to heat pathogens transmitting to Shaoyin.
Xiao Chai Hu Tang minus Ren Shen, Ban Xia, Huang Qin, Sheng Jiang, and Da Zao, plus Zhi Shi and Shao Yao, etc., made into powder. Take one cun bi with liquid, three times daily.
All diseases have true and false manifestations. True signs are easy to see; false signs are hard to distinguish. A slight error leads to results as opposite as ice and charcoal. Consider cold extremities in Shanghan: those appearing at the onset are direct transmission cold reversals (Zhi Zhong Han Jue); those appearing after five or six days when heat subsides are transmitted heat reversals (Chuan Jing Re Jue). Cold reversal is true; heat reversal is false. For treating heat reversal, only Si Ni San is appropriate. Carefully analyzing the pathogen, moving from Yang to Yin must pass through Shaoyang, and inevitably passes through Taiyin before entering Shaoyin. Thus, Chai Hu is first recommended as the guiding herb for the incoming pathogen and also serves as a guide for the outgoing pathogen. Zhi Shi is used to clear the middle pathway, repairing the route for healthy qi to return. When Yin disturbs Yang, and Yang is buried by Yin, there is no better method than harmonizing. Therefore, Shao Yao is needed to harmonize Ying (Nutrient) level, and Gan Cao to harmonize Stomach Qi. When Stomach Qi is harmonized, True Yang spreads, false signs heal, and cold extremities resolve. However, post-formula modifications are complex, mixing cold and hot herbs. Without deducing the mechanism of reversal based on symptoms, one cannot discuss this. For palpitations, add Gui Zhi; for difficult urination, add Fu Ling; for dysentery with heaviness below, add Xie Bai. These address Yin disturbed by Yang, opening and draining according to advantage. For cough with diarrhea, add Wu Wei Zi (Schisandra) and Gan Jiang (Dried Ginger); for abdominal pain, add Fu Zi (Aconite Root). These address Yang buried by Yin, urgently needing to awaken Yang to overcome Yin. This aligns with the method of Dang Gui Si Ni Jia Wu Zhu Yu Tang in Jueyin cases. Note that true conditions require direct treatment, while false conditions use indirect approaches, all following this formula's model. If heat pathogens in two channels become extreme causing reversal, Da Cheng Qi Tang (Major Order the Qi Decoction) for purgation is自有 (naturally indicated); this is not treatable by the harmonizing methods of Si Ni San or Dang Gui Si Ni Tang.
Chai Hu Qu Ban Xia Gua Lou Tang (Bupleurum Decoction minus Pinellia plus Trichosanthes Root) [from *Jin Gui Yao Lue*]: Treats malaria with excessive thirst.
Xiao Chai Hu Tang minus Ban Xia, plus Gua Lou Gen (Trichosanthes Root).
Chai Hu Gui Zhi Gan Jiang Tang (Bupleurum, Cinnamon Twig, and Dried Ginger Decoction) [from *Yi Han Jing*, named Chai Hu Gui Jiang Tang in *Jin Gui Yao Lue*]: Treats malaria with predominant chills and slight fever.
Xiao Chai Hu Tang minus Ren Shen, Ban Xia, Sheng Jiang, and Da Zao, plus Gui Zhi, Gan Jiang, Gua Lou Gen, and Mu Li (stir-fried).
Chai Hu Gui Zhi Tang (Bupleurum and Cinnamon Twig Decoction) [from *Yi Han Jing*]: Treats concurrent Shaoyang and Taiyang diseases, alternating chills and fever, and malaria.
Xiao Chai Hu Tang plus Gui Zhi and Shao Yao. (This is Xiao Chai Hu Tang combined with Gui Zhi Tang).
Chai Hu Si Wu Tang (Bupleurum Four Substances Decoction): Treats women catching cold during menstruation, with heat entering the Blood Chamber.
Xiao Chai Hu Tang combined with Si Wu Tang (Four Substances Decoction).
Chai Hu Zhi Jie Tang (Bupleurum, Immature Bitter Orange, and Platycodon Decoction) (also known as Zhi Jie Chai Hu Tang): Treats Shaoyang alternating chills and fever with epigastric fullness.
Xiao Chai Hu Tang plus Zhi Ke (Aurantii Fructus) and Jie Geng.
Zeng Sun Chai Hu Tang (Modified Bupleurum Decoction): Treats Shaoyang blood deficiency with persistent alternating chills and fever.
Xiao Chai Hu Tang minus Huang Qin, plus Chuan Xiong (Szechwan Lovage Rhizome), Shao Yao, and Chen Pi (Tangerine Peel).
Chai Hu Qing Gan San (Bupleurum Liver-Clearing Powder): Treats aversion to cold and fever due to anger/fire, and sores/ulcers due to wind-heat in Liver and Gallbladder.
Xiao Chai Hu Tang minus Ban Xia, Sheng Jiang, and Da Zao, plus Shan Zhi (Gardenia Fruit), Chuan Xiong, Lian Qiao (Forsythia Fruit), and Jie Geng.
Ren Shen Bai Du San (Ginseng Detoxifying Powder) [from *Ju Fang*]: Treats initial fever of seasonal epidemics, and persistent fever after diaphoresis for common cold.
Xiao Chai Hu Tang minus Ban Xia, Huang Qin, and Da Zao, plus Fu Ling, Qiang Huo (Notopterygium Rhizome), Du Huo (Angelica Pubescens Root), Qian Hu (Peucedanum Root), Chuan Xiong, Zhi Ke, and Jie Geng. Question: Using Ren Shen Bai Du San at the onset of epidemic febrile disease, does it not risk assisting the pathogen? How can it treat non-seasonal cold epidemics with persistent fever after sweating? Analyzing these two cases: one involves full-strength toxic pathogens; the other, lingering pathogens. How can one formula treat both indiscriminately? Epidemics arise from specific annual climates or geographical factors, varying greatly. However, they invariably damage the Middle Jiao (Earth), which governs the body regardless of meridians. Toxic vapors circulate and sink into deficiencies, making them unpredictable. One must aggressively attack while pathogens have not yet sunk. The brilliance of this formula lies entirely in Ren Shen, which controls opening and closing. Initially, it boosts Qiang Huo, Du Huo, Chai Hu, and Qian Hu to traverse their respective channels, opening pathways for heat-toxin resolution. Subsequently, it regulates fluids, essence, blood, and Qi to guard their territories, cutting off paths for pathogen re-entry. This parallels the protective Ying-nourishing intent of Shao Yao in Gui Zhi Tang. Similarly, Gui Zhi Ren Shen Tang, Xiao Chai Hu Tang, and Shen Su Yin all use Ren Shen to assist exterior-resolving herbs. However, this formula is specifically suited for Tian Xing Da Tou Wen (Epidemic Large Head Plague). Adding Jing Jie (Schizonepeta), Fang Feng (Saposhnikovia), Niu Bang Zi (Arctium Seed), and Bo He (Mint) creates Jing Fang Bai Du San, a specific remedy for Nian Jing Wen (Neck-Twisting Plague) and sore throat/swelling. For the aforementioned conditions, once heat-toxins have sunk, or for Northern Black Bone Wen, this formula is irrelevant. Pathogens from Shanghan transmission and latent Qi郁发 (depression and eruption) are distinct and unrelated. Ancients used this for residual heat after sweating in cold epidemics because non-seasonal pathogens mixed in meridians resisted surface-dispersing attempts; they were hidden and required Ren Shen's strong power to carry them out. For epidemic dysentery with coma, fever, and locked jaw, adding Chen Cang Mi (Old Rice) guides the formula to the Stomach, transforming toxins. Is this not the power of Ren Shen's assistance? Strangely, modern physicians claim Ren Shen aids pathogens and omit it, relying solely on aggressive dispersing groups, stirring up vigorous fire until True Yin is exhausted. Responding to student inquiries, I recount these ancestral views.
Jing Fang Bai Du San (Schizonepeta and Saposhnikovia Detoxifying Powder): Treats Da Tou Xia Ma Wen (Large Head Toad Plague).
Ren Shen Bai Du San plus Jing Jie, Fang Feng, Bo He, and Niu Bang Zi.
Cang Lin Tang (Granary Storehouse Decoction): Treats epidemic dysentery with fever.
Ren Shen Bai Du San plus a pinch of Chen Cang Mi.
Qing Pi Yin (Clear Spleen Drink): Treats food-type malaria with solid pulse, red urine, and constipation.
Xiao Chai Hu Tang minus Ren Shen, plus Bai Zhu (Atractylodes Macrocephala Rhizome), Qing Pi (Aurantii Fructus Pericarpium), Hou Po (Magnolia Bark), and Cao Guo (Tsaoko Cardamom). Commentary: Qing Pi Yin clears phlegm, Qi stagnation, and old retention in the Spleen, as well as wind-heat pathogens accumulated in the Shaoyang channel. By removing Ren Shen from Xiao Chai Hu Tang and adding Qing Pi, Bai Zhu, Hou Po, and Cao Gu—agents of reduction—it suits those of simple diet. However, for those nourished on rich foods with delicate constitutions, even if retention exists, they may not tolerate this harsh formula. Users should exercise caution.