生姜（四两） 半夏（半升） 黄芩（一两） 甘草（三两炙） 黄连（一两） 人参（三两） 干姜（一两） 大
枣（十二枚）
上八味以水一斗煮取六升去滓再煎服三升温服一升日三服
伤寒中风医反下之其人下利日数十行谷不化腹中雷鸣心下痞硬而满干呕心烦不得安医见其心下痞谓病不尽复下之其
痞益甚此非结热但以胃中虚客气上逆故使硬也甘草泻心汤主之
伤寒中风应当解表医反下之败其中气水谷不化土木皆郁升降倒行脾陷而贼于乙木则腹中雷鸣而下利胃逆而迫于甲木
则心下痞硬而干呕君相二火皆升而心烦医以痞为结热而复下之其痞益甚不知此非结热但以胃中阳虚不能堤障阴邪阴中客
气上逆阳位故使心下结硬也甘草泻心汤甘草姜枣补中而温下寒半夏芩连降逆而清上热也
甘草（四两） 大枣（十二枚） 干姜（三两） 半夏（半升洗） 黄芩（三两） 黄连（一两）
上六味以水一斗煮取六升去滓再煎取三升温服一升日三服
伤寒服汤药下利不止心下痞硬服泻心汤已复以他药下之利不止医以理中与之利益甚理中者理中焦此利在下焦赤石脂
禹余粮汤主之复利不止者当利其小便
伤寒误服寒凉汤药伤其中气利下不止心下痞硬服泻心汤已下利未止谓其中有积热复以他药下之阳气脱陷下利不止医
又意中寒以理中与之其利益甚理中者但理中焦此之下利在于下焦滑脱何以能止宜赤石脂禹余粮汤固下焦之滑脱利乃可止
也若使复利不止者必由土湿水停前窍不通而后注二肠当利其小便水道开而谷道合矣
生姜（四两） 半夏（半升） 黄芩（一两） 甘草（三两，炙） 黄连（一两） 人参（三两） 干姜（一两） 大枣（十二枚）
以上八味药，用水一斗煎煮，取药液六升，去掉药渣，再次煎煮至三升，每次温服一升，每日服用三次。
伤寒或中风病，医生反而使用下法治疗，导致患者腹泻每天几十次，食物不消化，肠中雷鸣般作响，胃脘部痞塞坚硬且胀满，干呕，心烦意乱，不得安宁。医生看到患者胃脘部痞塞，认为病邪未尽，再次使用下法，结果痞塞症状更加严重。这并非实热结聚，而是因为胃气虚弱，客气上逆，所以导致痞硬。应当用甘草泻心汤主治。
伤寒或中风病，本应当使用解表法，医生反而使用下法，损伤了中焦之气，导致水谷不能消化，木土之气皆郁滞，升降功能颠倒运行。脾气下陷而克制肝木（乙木），则出现肠中雷鸣和腹泻；胃气上逆而侵犯胆木（甲木），则出现胃脘部痞塞坚硬和干呕。君火与相火皆上升，导致心烦。医生将痞塞误认为是实热结聚，再次使用下法，痞塞症状更加严重。不知道这并非实热结聚，而是因为胃中阳气虚弱，不能制约阴邪，阴中的客气上逆占据阳位，所以导致心下部结聚坚硬。甘草泻心汤中，甘草、干姜、大枣补益中气并温煦下寒，半夏、黄芩、黄连降逆气并清上热。
甘草（四两） 大枣（十二枚） 干姜（三两） 半夏（半升，洗） 黄芩（三两） 黄连（一两）
以上六味药，用水一斗煎煮，取药液六升，去掉药渣，再次煎煮取三升，每次温服一升，每日服用三次。
伤寒患者服用汤药后，腹泻不止，胃脘部痞塞坚硬。服用泻心汤后，又用其他药物攻下，腹泻仍不止。医生用理中汤给予治疗，腹泻更加严重。理中汤是调理中焦的，此处的腹泻位于下焦，应当用赤石脂禹余粮汤主治。如果腹泻仍不止，应当通利小便。
伤寒患者误服寒凉汤药，损伤中焦之气，导致腹泻不止，胃脘部痞塞坚硬。服用泻心汤后，下利未止，医生认为其中有积热，再次用其他药物攻下，导致阳气脱陷，下利不止。医生又以为是中寒，用理中汤给予治疗，其利益处更甚。理中汤只能调理中焦，此处的下利在于下焦滑脱不禁，如何能止住？适宜用赤石脂禹余粮汤固摄下焦的滑脱，腹泻才可停止。如果再次腹泻不止，必定是由于脾土湿气重、水液停聚，导致前窍（尿道）不通，水液后注于二肠（大小肠）。此时应当通利小便，水道开通而谷道（肛门）自然闭合。
Shengjiang (Cinnamon Twig, four liang) Banxia (Pinelliae Rhizoma, half sheng) Huangqin (Scutellariae Radix, one liang) Gancao (Licorice Root, three liang, honey-fried) Huanglian (Coptidis Rhizoma, one liang) Renshen (Ginseng Radix et Rhizoma, three liang) Ganjiang (Zingiberis Rhizoma, one liang) Dazao (Jujubae Fructus, twelve pieces)
The above eight herbs are decocted in ten dou of water to obtain six sheng of liquid. The dregs are removed, and the liquid is further concentrated by boiling until three sheng remain. Each dose is one sheng, taken warm, three times a day.
In cases of Shanghan (Cold Damage) or Zhongfeng (Wind Strike), if the physician erroneously employs purgation, the patient may suffer from diarrhea dozens of times a day, with undigested food, borborygmus (rumbling in the abdomen), epigastric fullness and hardness, dry heaving, irritability, and restlessness. Seeing the epigastric stuffiness, the physician might assume residual pathogenic factors and administer purgation again, exacerbating the stuffiness. This is not due to accumulated heat but rather to deficiency of Stomach Qi and rebellion of hostile Qi ascending, causing hardness. Gancao Xiexin Tang (Licorice Decoction for Draining the Epigastrium) is the primary treatment.
In Shanghan or Zhongfeng, the appropriate treatment should be release of the exterior. If purgation is erroneously used, it damages Middle Jiao Qi, leading to inability to digest food and fluids. Wood and Earth Qi become stagnant, and the ascending-descending mechanism reverses. Spleen Qi sinks and overacts on Liver Wood (Yi Wood), causing borborygmus and diarrhea; Stomach Qi rebels and attacks Gallbladder Wood (Jia Wood), causing epigastric stuffiness, hardness, and dry heaving. Ministerial Fire and Sovereign Fire both ascend, causing irritability. The physician mistakes the stuffiness for accumulated heat and purges again, worsening the condition. This is not accumulated heat but deficiency of Yang Qi in the Stomach, failing to contain Yin pathogens, allowing hostile Qi within Yin to rebel and occupy Yang positions, resulting in epigastric knotting and hardness. In Gancao Xiexin Tang, Gancao, Ganjiang, and Dazao tonify the Middle and warm Lower Cold; Banxia, Huangqin, and Huanglian descend rebellion and clear Upper Heat.
Gancao (Licorice Root, four liang) Dazao (Jujubae Fructus, twelve pieces) Ganjiang (Zingiberis Rhizoma, three liang) Banxia (Pinelliae Rhizoma, half sheng, washed) Huangqin (Scutellariae Radix, three liang) Huanglian (Coptidis Rhizoma, one liang)
The above six herbs are decocted in ten dou of water to obtain six sheng of liquid. The dregs are removed, and the liquid is further concentrated by boiling until three sheng remain. Each dose is one sheng, taken warm, three times a day.
After taking herbal medicine for Shanghan, if diarrhea persists without cessation and the epigastrium feels hard and stuffed, and after taking Xiexin Tang (Draining the Epigastrium Decoction), if other purgatives are administered and diarrhea still does not cease, the physician might use Lizhong Tang (Regulate the Middle Decoction). However, this will worsen the diarrhea. Lizhong Tang regulates the Middle Jiao; this diarrhea originates in the Lower Jiao. Chishizhi Yuyuliang Tang (Red Halloysite and Hematite Decoction) is the primary treatment. If diarrhea persists despite this, diuresis (promoting urination) should be employed.
If Shanghan patients erroneously take cold-natured medicines, damaging Middle Jiao Qi, they may suffer from persistent diarrhea and epigastric hardness. After taking Xiexin Tang, if diarrhea continues, the physician might suspect accumulated heat and purge again, causing collapse of Yang Qi and persistent diarrhea. If the physician then assumes Middle Cold and administers Lizhong Tang, the diarrhea worsens. Lizhong Tang only regulates the Middle Jiao; this diarrhea involves Lower Jiao sliding and uncontrolled expulsion. It cannot be stopped by regulating the Middle. Chishizhi Yuyuliang Tang should be used to secure the Lower Jiao and stop sliding. If diarrhea persists, it is likely due to dampness in Earth and fluid retention, where the anterior opening (urinary tract) is blocked, causing fluids to flow into the intestines. Diuresis should be employed; once the water pathways open, the grain pathway (anus) will close.