麻黄（二两半去节） 升麻（一两一分） 当归（一两一分） 知母 黄芩 葳蕤（各十八铢） 天门冬（去心）
芍药 干姜 白术 茯苓 甘草（炙） 桂枝 石膏（碎锦裹各六铢）
上十四味。以水一斗先煮麻黄一两沸。去上沫。纳诸药。煮取三升。去滓分温三服相去如炊三斗米顷令。尽汗出愈。
麻黄（二两去节） 细辛（一两） 附子（一枚炮去皮破八片）
上三味以水一斗。先煮麻黄减二升。去上沫。纳药煮取三升。去滓温服一升日三服。
麻黄（二两去节） 甘草（二两炙） 附子（一枚炮去皮）
上三味以水七升。先煮麻黄一两沸。去上沫。纳诸药煮取三升。去滓温服一升。日三服。
（加减法见少阳篇本条下）
柴胡（半斤） 黄芩 人参 甘草（各三两） 半夏（半升洗） 生姜（三两切） 大枣（十二枚擘）
上七味以水一斗三升。煮取六升。去滓再煎取二升。温服一升。日三服。
柴胡（半斤） 黄芩（三两） 芍药（三两） 半夏（半升洗） 枳实（四枚炙） 大黄（二两） 生姜（五两切）
大枣（十二枚擘）
上八味。以水一斗二升。煮取六升。去滓。再煎温服一升。日三服。
此汤治少阳经邪渐入阳明之腑。或误下引邪内犯而过经不解之证。故于小柴胡方中。除去人参甘草助阳恋胃之味。
而加芍药枳实大黄之沉降。以涤除热滞也。与桂枝大黄汤同义。彼以桂枝甘草兼大黄。两解太阳误下之邪此以柴胡芩半
兼大黄两解少阳误下之邪。两不移易之定法也。
麻黄（二两半，去节） 升麻（一两一分） 当归（一两一分） 知母 黄芩 葳蕤（各十八铢） 天门冬（去心）
芍药 干姜 白术 茯苓 甘草（炙） 桂枝 石膏（碎锦裹，各六铢）
以上十四味药。用水一斗，先煮麻黄，煮沸一两次的次数后，去掉水面上的浮沫。加入其余药物，煎煮取三升药液，滤去药渣，分三次温服，两次服药间隔时间如同煮熟三斗米所需的时间，使患者出汗即愈。
麻黄（二两，去节） 细辛（一两） 附子（一枚，炮制，去皮，破成八片）
以上三味药，用水一斗。先煮麻黄，水量减少二升，去掉水面上的浮沫。加入其他药物，煎煮取三升药液，滤去药渣，温服一升，每日服用三次。
麻黄（二两，去节） 甘草（二两，炙） 附子（一枚，炮制，去皮）
以上三味药，用水七升。先煮麻黄，煮沸一两次的次数后，去掉水面上的浮沫。加入其余药物，煎煮取三升药液，滤去药渣，温服一升，每日服用三次。
（加减法见少阳篇本条下）
柴胡（半斤） 黄芩 人参 甘草（各三两） 半夏（半升，洗） 生姜（三两，切） 大枣（十二枚，掰开）
以上七味药，用水一斗三升，煎煮取六升药液，滤去药渣，再次煎煮取二升药液，温服一升，每日服用三次。
柴胡（半斤） 黄芩（三两） 芍药（三两） 半夏（半升，洗） 枳实（四枚，炙） 大黄（二两） 生姜（五两，切）
大枣（十二枚，掰开）
以上八味药，用水一斗二升，煎煮取六升药液，滤去药渣，再次煎煮，温服一升，每日服用三次。
此汤剂治疗少阳经邪气逐渐传入阳明之腑，或因误用下法导致邪气内犯且越过经络界限而病不解的证候。因此在小柴胡汤方中，去除人参、甘草这些助长阳气、留恋胃气的药物，而加入芍药、枳实、大黄等沉降性质的药物，以清除热邪积滞。这与桂枝大黄汤的原理相同，彼方用桂枝、甘草兼加大黄，双向解除太阳经因误下导致的邪气；此方用柴胡、黄芩、半夏兼加大黄，双向解除少阳经因误下导致的邪气。这是两种不可更改的固定法则。
Mahuang (Ephedrae Herba, 2.5 liang, remove nodes) Shengma (Cimicifugae Rhizoma, 1.1 liang) Danggui (Angelicae Sinensis Radix, 1.1 liang) Zhimu (Anemarrhenae Rhizoma) Huangqin (Scutellariae Radix) Weirui (Polygonati Odorati Rhizoma) [each 18 zhu] Tianmendong (Asparagi Radix, remove heart) Shaoyao (Paeoniae Radix) Ganjiang (Zingiberis Rhizoma) Baizhu (Atractylodis Macrocephalae Rhizoma) Fuling (Poria) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) Guizhi (Cinnamomi Ramulus) Shigao (Gypsum Fibrosum, wrapped in broken brocade) [each 6 zhu]
These fourteen ingredients. Use one dou of water to first decoct Mahuang until it boils once or twice. Remove the foam on the surface. Add the remaining herbs. Decoct to obtain three sheng of liquid. Strain and divide into three warm doses. The interval between doses should be equivalent to the time required to cook three dou of rice. Sweating indicates recovery.
Mahuang (Ephedrae Herba, 2 liang, remove nodes) Xixin (Asari Radix et Rhizoma, 1 liang) Fuzi (Aconiti Lateralis Radix Praeparata, one piece, processed, skin removed, broken into eight pieces)
These three ingredients. Use one dou of water. First decoct Mahuang until the volume reduces by two sheng. Remove the foam on the surface. Add the other herbs. Decoct to obtain three sheng of liquid. Strain and take one sheng warm, three times a day.
Mahuang (Ephedrae Herba, 2 liang, remove nodes) Gancao (Glycyrrhizae Radix et Rhizoma, 2 liang, honey-fried) Fuzi (Aconiti Lateralis Radix Praeparata, one piece, processed, skin removed)
These three ingredients. Use seven sheng of water. First decoct Mahuang until it boils once or twice. Remove the foam on the surface. Add the remaining herbs. Decoct to obtain three sheng of liquid. Strain and take one sheng warm, three times a day.
(For modifications, see the section below in the Shaoyang chapter.)
Chaihu (Bupleuri Radix, half jin) Huangqin (Scutellariae Radix) Renshen (Ginseng Radix) Gancao (Glycyrrhizae Radix et Rhizoma) [each 3 liang] Banxia (Pinelliae Rhizoma, half sheng, washed) Shengjiang (Zingiberis Recens Rhizoma, 3 liang, sliced) Dazao (Jujubae Fructus, twelve pieces, torn open)
These seven ingredients. Use one dou and three sheng of water. Decoct to obtain six sheng of liquid. Strain and decoct again to obtain two sheng of liquid. Take one sheng warm, three times a day.
Chaihu (Bupleuri Radix, half jin) Huangqin (Scutellariae Radix, 3 liang) Shaoyao (Paeoniae Radix, 3 liang) Banxia (Pinelliae Rhizoma, half sheng, washed) Zhishi (Aurantii Fructus Immaturus, four pieces, honey-fried) Dahuang (Rhei Radix et Rhizoma, 2 liang) Shengjiang (Zingiberis Recens Rhizoma, 5 liang, sliced)
Dazao (Jujubae Fructus, twelve pieces, torn open)
These eight ingredients. Use one dou and two sheng of water. Decoct to obtain six sheng of liquid. Strain and decoct again. Take one sheng warm, three times a day.
This decoction treats conditions where pathogenic factors from the Shaoyang meridian gradually enter the fu-organs of Yangming, or where erroneous use of purgative methods causes pathogens to invade internally and fail to resolve after crossing meridians. Therefore, in the Xiao Chai Hu Tang formula, the substances that assist yang qi and linger in the stomach, namely Renshen and Gancao, are removed. Instead, descending and sinking substances such as Shaoyao, Zhishi, and Dahuang are added to cleanse away heat stagnation. This shares the same principle as Guizhi Dahuang Tang: the latter uses Guizhi and Gancao combined with Dahuang to simultaneously resolve pathogens resulting from erroneous purgation in the Taiyang meridian; this formula uses Chaihu, Huangqin, and Banxia combined with Dahuang to simultaneously resolve pathogens resulting from erroneous purgation in the Shaoyang meridian. These are two unchangeable fixed methods.