治食积饮停，腹痛泄泻，痞满吐酸，积滞恶食，食疟下痢（伤于食饮，脾不运化，滞于
肠
李东
消化
重
山楂（三两，去核，或云核亦有力） 神曲（炒） 茯苓 半夏（一两） 陈皮 莱菔
子（微
此足太阴、阳明药也。山楂酸温收缩之性，能消油腻腥膻之食（收缩故食消）；神曲辛
温蒸 之物（ ，遏合切），能消酒食陈腐之积；菔子辛甘，下气而制面；麦芽咸温，消谷
而软坚（坚积、坚痰）；伤食必兼乎湿，茯苓补脾而渗湿；积久必郁为热，连翘散结而清热；
半夏能温能燥，和胃而健脾；陈皮能降能升，调中而理气；此内伤而气未病者，但当消导，
不须补益。大安
本方加白术、白芍，去半夏、菔子、连翘，蒸饼糊丸，名小保和丸∶助脾进食。本方加
白术二两，名大安丸，或加人参∶治饮食不消，气虚邪微。本方加白术、香附、黄芩、黄连
、浓
治脾虚气弱，饮食不消。
人参 白术（土炒，二两） 陈皮 麦芽（炒，二两） 山楂（去核，两半） 枳实（三
两。）
此足太阴、阳明药也。脾胃者，仓廪之官。胃虚则不能容受，故不嗜食；脾虚则不能运
化，
肉食
化痞
消导
本方去山楂、麦芽，加茯苓、炙甘草，名益气健脾丸∶治脾虚食少。本方去山楂、麦芽
、陈
血充
芍
麦芽，加神曲、川芎、香附，曲糊丸，名舒郁健脾丸∶治脾气郁滞，饮食不消。本方去山楂
、麦芽，加半夏、胆星、蛤粉、茯苓，神曲糊丸，名化痰健脾丸∶治内伤挟痰。本方去人参
、山楂、麦芽，加半夏、山栀、黄连，水丸，名清火健脾丸∶治脾虚有火。本方去人参、山
楂、麦牙，加木香、槟榔、浓朴、半夏、甘草，名和中健脾丸∶治胃虚饥不欲食。再加人参
，名妙应丸∶治胃虚不能食，脏腑或结或泻。本方去山楂，加半夏、青皮、木香、砂仁、草
蔻、干姜、炙甘草、茯苓、猪苓、泽泻、蒸饼丸，名宽中进食丸东垣∶补脾胃，进饮食。
治疗食积停滞、水饮内停，出现腹痛泄泻，胸脘痞闷胀满、呕吐酸水，积滞导致厌恶饮食，因饮食损伤引起的疟疾或痢疾（由于饮食所伤，脾脏运化功能失常，食物停滞在肠道）。
李东垣（金元四大家之一）的消化理论认为：
山楂（三两，去核，也有说法认为核也有药效），神曲（炒制），茯苓，半夏（一两），陈皮，莱菔子（微炒）。
这是足太阴脾经和足阳明胃经的药物。山楂具有酸温且具收敛性质的特点，能够消除油腻、腥膻类的食物（因为收敛作用所以能消食）；神曲是辛温发酵制成的药物，能够消除酒食和陈腐食物的积滞；莱菔子辛甘，能下气并制约面食积滞；麦芽咸温，能消化谷物积滞并使坚硬的积块软化（如坚积、坚痰）；伤食必然兼夹湿气，茯苓能补益脾气并渗利湿气；积滞日久必然郁而化热，连翘能散结并清热；半夏既能温中又能燥湿，调和胃气并健脾；陈皮既能降逆又能升清，调理中焦并理气；这是内伤但气机尚未严重病变的情况，只应当使用消导法，不需要补益。
大安丸：
本方加入白术、白芍，去掉半夏、莱菔子、连翘，用蒸饼糊为丸，名为小保和丸：帮助脾胃进食。本方加入白术二两，名为大安丸，或者加入人参：治疗饮食不消化，气虚邪气轻微。本方加入白术、香附、黄芩、黄连、浓朴……
治疗脾虚气弱，饮食不消化。
人参，白术（土炒，二两），陈皮，麦芽（炒，二两），山楂（去核，一两半），枳实（三两）。
这是足太阴脾经和足阳明胃经的药物。脾胃是掌管仓库粮食的器官。胃虚弱则不能容纳受纳食物，所以不喜欢吃东西；脾虚弱则不能运化水谷，……肉食……化痞……消导……
本方去掉山楂、麦芽，加入茯苓、炙甘草，名为益气健脾丸：治疗脾虚食少。本方去掉山楂、麦芽、陈……血充……芍药……麦芽，加入神曲、川芎、香附，用神曲糊为丸，名为舒郁健脾丸：治疗脾气郁滞，饮食不消化。本方去掉山楂、麦芽，加入半夏、胆南星、蛤粉、茯苓，用神曲糊为丸，名为化痰健脾丸：治疗内伤挟痰。本方去掉人参、山楂、麦芽，加入半夏、山栀、黄连，用水泛为丸，名为清火健脾丸：治疗脾虚有火。本方去掉人参、山楂、麦芽，加入木香、槟榔、浓朴、半夏、甘草，名为和中健脾丸：治疗胃虚饥饿但不想吃东西。再加人参，名为妙应丸：治疗胃虚不能进食，脏腑或结聚或泄泻。本方去掉山楂，加入半夏、青皮、木香、砂仁、草蔻、干姜、炙甘草、茯苓、猪苓、泽泻，用蒸饼为丸，名为宽中进食丸（李东垣方）：补益脾胃，增进饮食。
Treats food stagnation and fluid retention, presenting with abdominal pain and diarrhea, chest and epigastric fullness and distension, vomiting of sour fluid, aversion to food due to stagnation, malaria or dysentery caused by dietary injury (due to dietary damage, the Spleen fails to transform and transport, leading to stagnation in the intestines).
Li Dongyuan's theory on digestion states:
Shanzha (Crataegi Fructus, 3 liang, pips removed; some say the pips are also effective), Shenqu (Fermented Wheat Mass, stir-fried), Fuling (Poria), Banxia (Pinelliae Rhizoma, 1 liang), Chenpi (Citri Reticulatae Pericarpium), Laifuzi (Raphani Semen, slightly stir-fried).
These are herbs for the Foot-Taiyin (Spleen) and Foot-Yangming (Stomach) meridians. Shanzha has a sour-warm nature with astringent properties, capable of digesting fatty and fishy foods (the astringency aids digestion); Shenqu is a pungent-warm fermented product, capable of resolving stagnation from wine, food, and stale residues; Laifuzi is pungent-sweet, directs Qi downward and controls wheat-based food stagnation; Maiya (Hordei Fructus Germinatus) is salty-warm, digests grain accumulation and softens hardness (such as firm accumulations and phlegm); Food injury invariably involves dampness, so Fuling tonifies the Spleen and leaches out dampness; Stagnation over time inevitably turns into heat, so Lianqiao (Forsythiae Fructus) dissipates nodules and clears heat; Banxia can warm and dry, harmonizing the Stomach and strengthening the Spleen; Chenpi can descend and ascend, regulating the Middle Jiao and promoting Qi movement; This describes internal injury where Qi has not yet severely malfunctioned; one should only employ resolution and guidance methods, without need for tonification.
Da'an Wan (Great Peace Pill):
To this formula, add Baizhu (Atractylodis Macrocephalae Rhizoma) and Baishao (Paeoniae Radix Alba), remove Banxia, Laifuzi, and Lianqiao, and form pills using steamed dough paste. It is named Xiao Baohe Wan (Minor Harmonize the Stomach Pill): assists the Spleen in accepting food. If two liang of Baizhu are added to this formula, it is named Da'an Wan; or if Renshen (Ginseng Radix et Rhizoma) is added: treats indigestion due to Qi deficiency and mild pathogenic factors. If Baizhu, Xiangfu (Cyperi Rhizoma), Huangqin (Scutellariae Radix), Huanglian (Coptidis Rhizoma), Houpo (Magnoliae Officinalis Cortex)... are added...
Treats Spleen deficiency and Qi weakness, resulting in indigestion.
Renshen (Ginseng Radix et Rhizoma), Baizhu (Atractylodis Macrocephalae Rhizoma, soil-stir-fried, 2 liang), Chenpi (Citri Reticulatae Pericarpium), Maiya (Hordei Fructus Germinatus, stir-fried, 2 liang), Shanzha (Crataegi Fructus, pips removed, 1.5 liang), Zhishi (Aurantii Fructus Immaturus, 3 liang).
These are herbs for the Foot-Taiyin (Spleen) and Foot-Yangming (Stomach) meridians. The Spleen and Stomach are the officials responsible for the granaries. If the Stomach is deficient, it cannot receive and contain food, hence there is lack of appetite; if the Spleen is deficient, it cannot transform and transport... meat... transforms into痞 (Pi syndrome/accumulation)... resolution and guidance...
If Shanzha and Maiya are removed from this formula, and Fuling (Poria) and Zhi Gancao (Prepared Glycyrrhizae Radix et Rhizoma) are added, it is named Yiqi Jianpi Wan (Qi-Boosting Spleen-Strengthening Pill): treats Spleen deficiency with poor appetite. If Shanzha, Maiya, and Chenpi... blood fills... Shaoyao... Maiya are removed, and Shenqu, Chuanxiong (Ligustici Chuanxiong Rhizoma), and Xiangfu are added, forming pills with Shenqu paste, it is named Shuyu Jianpi Wan (Soothing Depression Spleen-Strengthening Pill): treats Spleen Qi stagnation with indigestion. If Shanzha and Maiya are removed, and Banxia, Danningxing (Arisaematis Cum Bile), Ge Fen (Concha Meretricis), and Fuling are added, forming pills with Shenqu paste, it is named Huatan Jianpi Wan (Phlegm-Resolving Spleen-Strengthening Pill): treats internal injury complicated by phlegm. If Renshen, Shanzha, and Maiya are removed, and Banxia, Zhizi (Gardeniae Fructus), and Huanglian are added, forming water pills, it is named Qinghuo Jianpi Wan (Fire-Clearing Spleen-Strengthening Pill): treats Spleen deficiency with fire. If Renshen, Shanzha, and Maiya are removed, and Muxiang (Aucklandiae Radix), Binglang (Arecae Semen), Houpo, Banxia, and Gancao are added, it is named Hezhong Jianpi Wan (Middle-Harmonizing Spleen-Strengthening Pill): treats Stomach deficiency with hunger but no desire to eat. Adding Renshen makes it Miaoying Wan (Miraculous Efficacy Pill): treats Stomach deficiency inability to eat, where organs may be obstructed or loose. If Shanzha is removed from this formula, and Banxia, Qingpi (Citri Reticulatae Pericarpium Viride), Muxiang, Sharen (Amomi Fructus), Cao Kou (Amomi Fructus Rotundus), Ganjiang (Zingiberis Rhizoma), Zhi Gancao, Fuling, Zhuling (Polyporus), and Ze Xie (Alismatis Rhizoma) are added, forming pills with steamed dough, it is named Kuanzhong Jinshi Wan (Broad-Middle Appetite-Advancing Pill, by Li Dongyuan): tonifies the Spleen and Stomach, advances diet.