即大承气汤减芒硝加桃仁一方去枳实浓朴加桂枝桃仁治伤寒热毒入经结于五脏
吐血下血及热结膀胱其人如狂外解而小腹急痛者及血痢质实跌蹼损伤瘀血作痛等症
即大承气汤加甘草治大承气汤证腹满实痛又治小承气汤证内热不便又治调胃承
语下利此汤合而为一故名三一承气汤也
即大承气汤加甘草黄芩芍药柴胡以代大承气小承气调胃承气三一承气大陷胸大
故名六一顺气汤顺即承也
即大承气汤加甘草人参当归治心下硬痛下利纯清水谵语发渴身热者庸妄不识呼为漏
用热药止之误矣此因热邪传里胃有燥屎名曰热结利俗所谓傍流也
即大承气汤去芒硝加羌活治中风便溺阻隔邪气内实者上焦满治以浓朴中焦满破以枳
焦实夺以大黄用羌活者不离乎风也服后二便微行三焦气化故曰三化
即大承气汤去芒硝加麻仁（二升）芍药（半斤）杏仁（一斤）蜜丸服一名脾约丸一名润
肠丸治胃强脾弱不能运布津液濡润大肠大便结燥者又治跌阳脉浮而涩小便数大便难为脾约者
即大承气汤去浓朴枳壳加甘草牛蒡当归治时气五发疮疡喉闭虐头风等证
即调胃承气汤加桃仁桂木通大腹皮治阳毒伤寒未解热结在内恍惚如狂者
太阳病心中懊 阳气内陷心下因硬则为结胸伤寒六七日结胸热实脉沉而紧心下痛
大黄（六两去皮苦寒） 芒硝（一升咸寒） 甘遂（一钱匕苦寒）
上三味以水六升先煮大黄取二升去滓内芒硝煮一两沸内甘遂末温服一升得快利止后服
成无己云大黄谓之将军以苦荡涤芒硝一名硝石以其咸能软硬夫间有甘遂以通水也甘遂若
夫间之遂其气可以直达透结陷胸三物为允 利药之中此为HT 剂伤寒错恶结胸为甚非此汤
则不
能通
能久
这就是大承气汤减去芒硝，加入桃仁的方子。这一方去掉枳实、浓朴，加入桂枝和桃仁，用于治疗伤寒热毒侵入经络，结聚于五脏，导致吐血、下血，以及热邪结于膀胱，患者出现神志狂乱、表证已解但小腹急痛的症状，还有血痢、体质壮实、跌打损伤导致的瘀血疼痛等病症。
这就是大承气汤加入甘草的方子。它治疗大承气汤证中腹部胀满实痛的情况；又治疗小承气汤证中内热便秘的情况；还治疗调胃承气汤证中出现谵语和下利的情况。此汤将上述三种情况合而为一，所以名叫三一承气汤。
这就是大承气汤加入甘草、黄芩、芍药、柴胡，用来替代大承气汤、小承气汤、调胃承气汤、三一承气汤、大陷胸汤等的方子，所以名叫六一顺气汤。“顺”的意思就是“承”。
这就是大承气汤加入甘草、人参、当归，用于治疗心下部硬痛、下利纯清水、谵语、口渴、身热的症状。庸医误认为是漏证而使用热药止泻，这是错误的。这是因为热邪传入体内，胃中有燥屎，名为“热结利”，也就是俗话所说的“旁流”。
这就是大承气汤去掉芒硝，加入羌活，用于治疗中风导致的大小便不通、邪气内实的病症。上焦胀满用厚朴来治疗，中焦胀满用枳实来破除，下焦实邪用大黄来攻夺。加入羌活是因为不离乎风邪。服药后大小便微微通畅，三焦气化功能恢复，所以叫作“三化”。
这就是大承气汤去掉芒硝，加入麻仁（二升）、芍药（半斤）、杏仁（一斤），制成蜜丸服用。一名脾约丸，一名润肠丸。用于治疗胃强脾弱，不能运布津液以濡润大肠，导致大便干结的情况；又治疗趺阳脉浮而涩，小便频数，大便困难，属于脾约证的病症。
这就是大承气汤去掉浓朴、枳壳，加入甘草、牛蒡子、当归，用于治疗时气病引发的疮疡、喉闭、疟疾、头风等证候。
这就是大承气汤加入生姜、大枣、桂枝、甘草，用于治疗腹痛、胀满。
这就是调胃承气汤加入桃仁、桂枝、木通、大腹皮，用于治疗阳毒伤寒未解，热邪结聚在体内，患者神情恍惚、如发狂状的病症。
太阳病，心中烦闷不安（懊憹），阳气内陷，心下部因此变硬，这就形成了结胸。伤寒六七日，形成结胸热实证，脉象沉而紧，心下部疼痛……
大黄（六两，去皮，苦寒） 芒硝（一升，咸寒） 甘遂（一钱匕，苦寒）
以上三味药，用水六升，先煮大黄，取汁二升，去渣，加入芒硝，煮一两沸，再加入甘遂末，温服一升。如果得快利（腹泻通畅），就停止后服。
成无己说：大黄被称为将军，因为它能凭借苦味荡涤积滞；芒硝又名硝石，因为它能凭借咸味软化坚硬之物；中间加入甘遂以疏通水饮。甘遂就像打通房间通道一样，其气可以直达并透破结聚，从而解除胸膈间的结滞，这三味药配合是恰当的。在泻下药中，这是峻猛之剂。伤寒错杂恶变的结胸证非常严重，非此汤不能通导。如果不能久服……
This is the Da Cheng Qi Tang (Great Order the Yang Decoction) with Mang Xiao (Natrii Sulfas) removed and Tao Ren (Prunus Persica Seed) added. This formula removes Zhi Shi (Aurantii Fructus Immaturus) and Hou Po (Magnoliae Officinalis Cortex), adds Gui Zhi (Cinnamomi Ramulus) and Tao Ren, and treats Taiyang disease (Taiyang syndrome) where heat-toxin has entered the meridians and condensed in the five zang organs, causing hematemesis (vomiting blood) and hematochezia (bleeding from the anus). It also treats heat condensation in the Bladder, presenting with mental restlessness resembling madness, resolution of exterior symptoms, but urgency and pain in the lower abdomen. Additionally, it addresses bloody dysentery, robust constitution, trauma injuries resulting in blood stasis and pain, and other such conditions.
This is the Da Cheng Qi Tang with Gan Cao (Glycyrrhizae Radix et Rhizoma) added. It treats abdominal fullness and solid pain characteristic of the Da Cheng Qi Tang syndrome; it also treats internal heat and constipation characteristic of the Xiao Cheng Qi Tang (Minor Order the Yang Decoction) syndrome; and it treats delirium and diarrhea characteristic of the Tiao Wei Cheng Qi Tang (Regulate the Stomach and Order the Yang Decoction) syndrome. This decoction combines these three indications into one, hence the name San Yi Cheng Qi Tang (Three-in-One Order the Yang Decoction).
This is the Da Cheng Qi Tang with Gan Cao, Huang Qin (Scutellariae Radix), Shao Yao (Paeoniae Radix Alba), and Chai Hu (Bupleuri Radix) added, intended to replace Da Cheng Qi Tang, Xiao Cheng Qi Tang, Tiao Wei Cheng Qi Tang, San Yi Cheng Qi Tang, and Da Xian Xiong Tang (Major Chest-Draining Decoction). Hence it is named Liu Yi Shun Qi Tang (Six-in-One Smooth Qi Decoction). "Shun" (Smooth/Compliant) implies "Cheng" (Order/Receive).
This is the Da Cheng Qi Tang with Gan Cao, Ren Shen (Ginseng Radix), and Dang Gui (Angelicae Sinensis Radix) added. It treats hardness and pain in the epigastrium, purgation of pure clear water, delirium, thirst, and fever. Quack doctors mistakenly identify this as a leakage syndrome and use hot herbs to stop the diarrhea, which is an error. This condition arises because heat pathogen has transmitted inward, creating dry feces in the stomach, termed "heat-binding diarrhea," commonly known as "paradoxical diarrhea."
This is the Da Cheng Qi Tang with Mang Xiao removed and Qiang Huo (Notopterygii Rhizoma et Radix) added. It treats wind-stroke presenting with obstruction of urination and defecation and internal excess of pathogenic factors. Upper jiao (Upper Burner) fullness is treated with Hou Po; middle jiao fullness is broken down by Zhi Shi; lower jiao excess is evacuated by Da Huang (Rhei Radix et Rhizoma). Qiang Huo is included because the treatment must address the wind pathogen. After administration, urination and defecation slightly flow, restoring qi transformation in the three jiao; thus it is called "San Hua" (Three Transformations).
This is the Da Cheng Qi Tang with Mang Xiao removed, adding Ma Ren (Semen Cannabis), Shao Yao, and Xing Ren (Armeniacae Semen Amarum), processed into honey pills. Also known as Pi Yue Wan (Spleen-Restriction Pill) or Run Chang Wan (Intestine-Moistening Pill). It treats conditions where the Stomach is strong but the Spleen is weak, unable to transport and distribute body fluids to moisten the Large Intestine, resulting in dry, hard stools. It also treats cases where the Yuyang pulse (pulse at the dorsalis pedis artery) is floating and choppy, with frequent urination and difficult defecation, classified as Spleen-Restriction syndrome.
This is the Da Cheng Qi Tang with Hou Po and Zhi Ke (Aurantii Fructus) removed, adding Gan Cao, Niu Bang Zi (Arctii Fructus), and Dang Gui. It treats epidemic febrile diseases manifesting as sores and ulcers, throat closure, malaria, and head wind syndromes.
This is the Da Cheng Qi Tang with Sheng Jiang (Zingiberis Rhizoma Recens), Da Zao (Jujubae Fructus), Gui Zhi, and Gan Cao added. It treats abdominal pain and distension/fullness.
This is the Tiao Wei Cheng Qi Tang with Tao Ren, Gui Zhi, Mu Tong (Akebiae Caulis), and Da Fu Pi (Arecae Pericarpium) added. It treats Yang Du Shang Han (Yang Toxicity Cold Damage) that has not yet resolved, with heat condensing internally, presenting with mental confusion and a state resembling madness.
In Taiyang disease, if there is deep inner vexation (Ao Nao), and yang qi sinks inward causing hardness in the epigastrium, this forms Jie Xiong (Chest Binding). In cold damage after six or seven days, if chest binding presents as a heat-excess syndrome with a sinking and tight pulse, pain in the epigastrium...
Da Huang (6 liang, peeled, bitter-cold)
Mang Xiao (1 sheng, salty-cold)
Gan Sui (1 qian bi, bitter-cold)
Take the above three ingredients, boil in 6 sheng of water. First decoct Da Huang until 2 sheng remain, remove the dregs, add Mang Xiao, boil for one or two boils, then add Gan Sui powder. Take 1 sheng warm. If rapid purgation occurs, stop taking the remainder.
Cheng Wuji stated: Da Huang is called the General because its bitterness sweeps away stagnation; Mang Xiao, also known as Xiao Shi, softens hardness due to its salinity; Gan Sui is added in between to unblock fluid retention. Gan Sui acts like clearing a passage through a room, its qi reaching directly to penetrate the condensation and drain the chest. The combination of these three agents is appropriate. Among purgative medicines, this is a drastic agent. Severe cold damage complications involving chest binding are extreme; without this decoction, they cannot be unblocked. If not taken for long...