脾虚食后即作泻，腹满不渴少精神，面黄懒食肌消瘦，参苓白术奏奇勋。
【注】脾虚泻者，多因脾不健运。故每逢食后作泻，腹满不渴，精神短少，面黄懒食，
肌肉消瘦也，宜用参苓白术散以补脾，其泻自止。
参苓白术散（方见脾疳）
清气下陷失健运，完谷不化飧泻名，补中益气汤升补，久泻肠滑用四神。
【注】飧泻者，或因春伤风邪，清气下陷，脾失健运，以致完谷不化也。治者须补养脾
土，用补中益气汤升其中气。若泄泻日久，肠滑不禁者，用四神丸治之。
补中益气汤
人参 黄 （蜜炙） 当归（土炒） 白术（土炒） 炙甘草 陈皮 升麻（土炒） 柴胡（醋
炒）
引用姜枣，水煎服。
【方歌】飧泻多因清阳陷，补中益气汤最验，参 归术草陈皮，升麻柴胡功无限。
四神丸
补骨脂（四两） 五味子 肉豆蔻（面裹煨，各二两） 吴茱萸（水浸炒，一两）
上为细末，生姜枣肉为丸，每服一钱，米饮下。
脾胃湿盛成水泻，懒食溏泻色多黄，清浊不分溺短涩，胃苓升阳除湿汤。
【注】水泻者，皆因脾胃湿盛，以致清浊不分，变成水泻之证。其候小便短涩、懒食、
溏泻色黄，宜用胃苓汤以除湿。若泻久不止，则用升阳除湿汤治之，其证自愈。
胃苓汤
苍术（炒） 陈皮 浓朴（姜炒） 白术（土炒） 茯苓 炙甘草 肉桂 泽泻 猪苓
引用生姜红枣，水煎服。
【方歌】湿泻胃苓汤堪行，苍术陈皮浓朴同，白术茯苓炙甘草，肉桂泽泻共猪苓。
升阳除湿汤
苍术（炒） 陈皮 防风 神曲（炒） 麦芽（炒） 泽泻 升麻 炙甘草 羌活 柴胡 猪苓
引用生姜，水煎服。
【方歌】升阳除湿泻不停，苍术陈皮共防风，神曲麦芽泽甘草，升麻羌活柴猪苓。
Spleen deficiency leads to diarrhea immediately after eating, accompanied by abdominal fullness, lack of thirst, and low spirit; with a sallow complexion, anorexia, and emaciation, Shenling Baizhu San (Ginseng, Poria, and Atractylodes Macrocephala Powder) can achieve remarkable results.
[Note] Spleen-deficiency diarrhea is mostly caused by impaired spleen transportation and transformation. Therefore, diarrhea occurs after every meal, accompanied by abdominal fullness, lack of thirst, diminished spirit, sallow complexion, anorexia, and muscle wasting. It is appropriate to use Shenling Baizhu San (Ginseng, Poria, and Atractylodes Macrocephala Powder) to tonify the spleen, upon which the diarrhea will naturally cease.
Shenling Baizhu San (Ginseng, Poria, and Atractylodes Macrocephala Powder) (See formula in "Spleen Gan" chapter)
Clear qi sinking leads to loss of normal transportation; stool containing undigested food is named Sun-xie (Morning Diarrhea). Use Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) to raise and tonify middle qi; for chronic diarrhea with intestinal slipping, use Sishen Wan (Four Spirits Pill).
[Note] Sun-xie (Morning Diarrhea) may be due to wind-pathogen injury in spring, causing clear yang qi to sink and the spleen to lose its transportation function, resulting in undigested food in the stool. Treatment must nourish the spleen earth and use Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) to raise the middle qi. If diarrhea persists for a long time, leading to intestinal slipping and inability to control defecation, use Sishen Wan (Four Spirits Pill) for treatment.
Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction)
Renshen (Ginseng Radix), Huangqi (Astragali Radix, honey-fried), Danggui (Angelicae Sinensis Radix, stir-fried with loess), Baizhu (Atractylodis Macrocephalae Rhizoma, stir-fried with loess), Zhigancao (Glycyrrhizae Radix et Rhizoma Preparata), Chenpi (Citri Reticulatae Pericarpium), Shengma (Cimicifugae Rhizoma, stir-fried with loess), Chaihu (Bupleuri Radix, stir-fried with vinegar).
Add fresh ginger and jujube, decoct in water and take orally.
[Formula Song] Sun-xie (Morning Diarrhea) is often due to sinking of clear yang; Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) is most effective. Ginseng, Angelica, Atractylodes, Licorice, and Citrus peel; Cimicifuga and Bupleurum have boundless merit.
Sishen Wan (Four Spirits Pill)
Buguzhi (Psoraleae Fructus, four liang), Wuweizi (Schisandrae Chinensis Fructus), Roudoukou (Myristicae Semen, baked in flour coating, two liang each), Wuzhuyu (Evodiae Fructus, soaked in water and stir-fried, one liang).
Grind the above into fine powder, make pills with fresh ginger and jujube pulp. Take one qian per dose, washed down with rice drink.
Excessive dampness in the spleen and stomach forms Shui-xie (Watery Diarrhea); symptoms include anorexia, loose stools that are mostly yellow, indistinct separation of clear and turbid, and short, scanty, and difficult urination. Use Weiling Tang (Gastrointestinal Regulation Decoction) combined with Shengyang Qushi Tang (Raise Yang and Dispel Dampness Decoction).
[Note] Shui-xie (Watery Diarrhea) is all caused by excessive dampness in the spleen and stomach, leading to the failure to distinguish between clear and turbid, evolving into watery diarrhea. The manifestations include short, scanty, and difficult urination, anorexia, and loose yellow stools. It is appropriate to use Weiling Tang (Gastrointestinal Regulation Decoction) to dispel dampness. If diarrhea persists for a long time without stopping, then use Shengyang Qushi Tang (Raise Yang and Dispel Dampness Decoction) for treatment, and the condition will heal itself.
Weiling Tang (Gastrointestinal Regulation Decoction)
Cangzhu (Atractylodis Rhizoma, stir-fried), Chenpi (Citri Reticulatae Pericarpium), Houpo (Magnoliae Officinalis Cortex, stir-fried with fresh ginger), Baizhu (Atractylodis Macrocephalae Rhizoma, stir-fried with loess), Fuling (Poria), Zhigancao (Glycyrrhizae Radix et Rhizoma Preparata), Rougui (Cinnamomi Cortex), Zexie (Alismatis Rhizoma), Zhuling (Polyporus).
Add fresh ginger and red jujube, decoct in water and take orally.
[Formula Song] For damp diarrhea, Weiling Tang (Gastrointestinal Regulation Decoction) is suitable; Cangzhu, Chenpi, and Houpo together; Baizhu, Fuling, and Zhigancao; Rougui, Zexie, and Zhuling shared.
Shengyang Qushi Tang (Raise Yang and Dispel Dampness Decoction)
Cangzhu (Atractylodis Rhizoma, stir-fried), Chenpi (Citri Reticulatae Pericarpium), Fangfeng (Saposhnikoviae Radix), Shenqu (Massa Medicata Fermentata, stir-fried), Maiya (Hordei Fructus Germinatus, stir-fried), Zexie (Alismatis Rhizoma), Shengma (Cimicifugae Rhizoma), Zhigancao (Glycyrrhizae Radix et Rhizoma Preparata), Qianghuo (Notopterygii Rhizoma et Radix), Chaihu (Bupleuri Radix), Zhuling (Polyporus).
Add fresh ginger, decoct in water and take orally.
[Formula Song] Raise yang and dispel dampness to stop persistent diarrhea; Cangzhu, Chenpi, and Fangfeng together; Shenqu, Maiya, Zexie, and Licorice; Shengma, Qianghuo, Chaihu, and Zhuling.