食积痛者，经所谓饮食自倍，肠胃乃伤也。其症恶心恶食，吞酸嗳腐，其脉多沉实，当
分三焦而治，在上吐之，在中消之，在下下之。
吐之方
烧盐半升，温汤五六升，和服探吐。
吴鹤皋云∶凡腹痛连胁膈，手足冷，脉沉伏者，多是饮食痰饮，填塞至阴，抑遏少阳上
升之
气，不得敷畅。两实相搏，令人自痛，肢冷脉伏，皆阳气闭藏之象也。经曰∶木郁达之。故
用吐法，咸能软坚，故用烧盐。
消之方
取其余类烧作末，酒服方寸匕。（如食肉即以肉烧作末，然必得如所食者烧作末乃效。
鹤年）
又治杂食瘀实不消，心腹坚痛方
白盐一升，以水三升，煎服吐下即定。
下之方
川大黄 干姜 巴豆（去皮心，研压去油，等分）
蜜丸如小豆大，温水下一丸，实者加一丸，未知服三丸，腹中鸣转下行便愈。此治寒饮
食过
伤，心腹卒痛，如锥刺之状。若伤湿热之物，不得化而闷乱便闭者，宜浓朴三物汤，或枳实
导滞丸良。
浓朴三物汤
浓朴（二两，炙去皮） 枳实（二枚，大者，炙） 大黄（四两）
水二斗，煮枳实、浓朴二味，至五升，下大黄煮取二升，温服一升，以利为度。
死血痛者，多从郁怒及饱食后急走得之，其痛必有定处，其脉必芤涩，微则和之，甚则
下之。
桃仁承气汤
桃仁（五十粒，去皮尖） 桂枝（二两，去皮） 大黄（四两） 芒硝（二两） 甘草（炙，二
两）
上五味，以水七升，煮取二升半，去滓，内芒硝，更上火，微沸下火，先食温服五合，
日三服，当微利。虚者加地黄蜜丸，以缓除之。
一方
妇人油头发，烧如灰，细研筛过，温酒调下二钱。元丰中，丞相王郇公，小腹痛，国医
治之，百药不止，服此即愈。
食积痛，就是《内经》所说的“饮食过量一倍，肠胃就会受损”。其症状表现为恶心、厌恶食物、吞酸、嗳气带有腐臭味，脉象多呈沉实。治疗应当根据病位在三焦中的不同而分别施治：病在上焦用催吐法，病在中焦用消导法，病在下焦用泻下法。
催吐方：
取烧过的盐半升，用温开水五六升调和服用，以引发呕吐。
吴鹤皋说：凡是腹痛牵连胁肋和膈部，手足发冷，脉象沉伏的，多是饮食停滞或痰饮内停，填塞于至阴之处，抑制了少阳之气上升，导致气机不能舒展通畅。邪气与正气相互搏结，使人产生疼痛；四肢发冷、脉象伏匿，都是阳气被闭藏郁遏的表现。《内经》说：“木郁则达之。”所以采用吐法；咸味能软坚散结，所以使用烧过的盐。
消导方：
将吃剩的食物残渣烧成粉末，用酒送服一方寸匕。（如果是吃肉积滞，就将肉类烧成粉末，但必须是用所吃的食物种类烧成的粉末才有效。——鹤年注）
又方：治疗杂食瘀积结实不消化，心腹部坚硬疼痛：
白盐一升，加水三升，煎煮后服用，通过催吐或泻下使病情安定。
泻下方：
川大黄、干姜、巴豆（去皮去心，研磨压榨去油，三者等分）。
制成蜜丸，大小如小豆，温水送服一丸，体质壮实者加服一丸，若未见效可服三丸，腹中肠鸣转动，大便通利后痊愈。此方用于治疗因寒性饮食过度损伤所致的心腹突然剧痛，疼痛感觉像锥子刺一样。如果是因为食用湿热之物，导致无法消化而胸闷烦乱、大便秘结的，宜用浓朴三物汤，或者枳实导滞丸，效果良好。
浓朴三物汤：
浓朴（二两，炙烤后去皮）、枳实（两枚，大的，炙烤）、大黄（四两）。
用水二斗，先煮枳实和浓朴两味药，煮至五升时，加入大黄，再煮取二升药液，温服一升，以大便通利为度。
死血痛（瘀血阻滞引起的疼痛），多因郁怒以及饱食后立即奔走劳累所致。这种疼痛部位固定不变，脉象必定呈现芤涩之象。病情轻微的用调和法，严重的用泻下法。
桃仁承气汤：
桃仁（五十粒，去皮尖）、桂枝（二两，去皮）、大黄（四两）、芒硝（二两）、甘草（炙，二两）。
以上五味药，用水七升，煮取二升半，滤去药渣，加入芒硝，再次上火微沸后离火。饭前温服五合，每日三次服药，应当出现轻微的腹泻。体虚者加用地黄蜜丸，以缓和的方式祛除瘀血。
另一偏方：
妇女脱落的头发，烧成灰烬，细研过筛，用温酒调服二钱。元丰年间，丞相王郇公患小腹痛，国医治疗无效，百药不止，服用此方即愈。
Pain caused by food stagnation refers to what the *Classic of Internal Medicine* (*Huangdi Neijing*) describes as "when food and drink intake doubles, the spleen and stomach are injured." Its symptoms include nausea, aversion to food, acid regurgitation, and belching with a putrid odor; the pulse is typically deep and forceful. Treatment should be differentiated according to the location within the Triple Burner: if located in the Upper Burner, induce vomiting; if in the Middle Burner, promote digestion and resolution; if in the Lower Burner, purge downward.
Vomiting Formula:
Take half a sheng of calcined salt, mix with five or six sheng of warm water, and ingest to induce vomiting.
Wu Hegao stated: Whenever abdominal pain radiates to the hypochondrium and diaphragm, accompanied by cold extremities and a deep, hidden pulse, it is mostly due to food retention or phlegm-fluid obstructing the Zhiyin (Supreme Yin), suppressing the ascending Qi of Shaoyang (Lesser Yang) and preventing its smooth distribution. When pathogenic factors and healthy Qi contend, pain ensues; cold limbs and a hidden pulse are both manifestations of Yang Qi being enclosed and concealed. The Classic states: "When Wood is stagnant, disperse it." Therefore, the vomiting method is employed; since salty flavor can soften hardness, calcined salt is used.
Digestion-Promoting Formula:
Take the remnants of the consumed food, burn them into powder, and administer one fangcun bi (a traditional measure for powder) with wine. (If the stagnation is from meat, burn the meat residue into powder; however, it must be the specific type of food eaten that is burned into powder to be effective. — Note by Henian)
Another formula for treating indigestion of mixed foods resulting in solid accumulation, with hard and painful abdomen:
One sheng of white salt, boiled in three sheng of water. Ingest to induce vomiting or purging, which will stabilize the condition.
Purging Formula:
Radix et Rhizoma Rhei (Dahuang, 大黄), Rhizoma Zingiberis Recens (Ganjiang, 干姜), Fructus Crotonis Tiglii (Badou, 巴豆) [skin and heart removed, ground and pressed to remove oil], equal parts.
Make honey pills the size of small beans. Administer one pill with warm water. For those with excess conditions, add one more pill. If there is no improvement, take three pills. When bowel sounds are heard and movement occurs downwards with defecation, the condition resolves. This treats sudden severe pain in the heart and abdomen caused by excessive consumption of cold-dietary injuries, feeling like needle pricks. If the injury is from damp-heat substances, leading to inability to digest, chest oppression, restlessness, and constipation, use Houpo Sanwu Tang (Magnolia Bark Three-Ingredient Decoction) or Zhishi Daozhi Wan (Immature Bitter Orange Stagnation-Resolving Pill), which are beneficial.
Houpo Sanwu Tang (Magnolia Bark Three-Ingredient Decoction):
Cortex Magnoliae Officinalis (Houpo, 厚朴) [two liang, roasted and skin removed], Fructus Aurantii Immaturus (Zhishi, 枳实) [two pieces, large ones, roasted], Radix et Rhizoma Rhei (Dahuang, 大黄) [four liang].
Use two dou of water. First decoct Zhishi and Houpo until reduced to five sheng. Then add Dahuang and decoct to obtain two sheng. Take one sheng warm. Stop when bowel movement is achieved.
Pain caused by dead blood (blood stasis) often results from emotional depression/anger and vigorous running immediately after a full meal. The pain has a fixed location, and the pulse is necessarily thready and choppy. For mild cases, harmonize; for severe cases, purge downward.
Taoren Chengqi Tang (Peach Kernel Decoction to Order the Qi):
Semen Persicae (Taoren, 桃仁) [50 seeds, skin and tips removed], Ramulus Cinnamomi (Guizhi, 桂枝) [two liang, skin removed], Radix et Rhizoma Rhei (Dahuang, 大黄) [four liang], Natrii Sulfas (Mangxiao, 芒硝) [two liang], Radix Glycyrrhizae Preparata (Gancao, 甘草) [roasted, two liang].
The above five ingredients are decocted in seven sheng of water to obtain two and a half sheng. Strain out the dregs, add Mangxiao, heat again until slightly boiling, then remove from fire. Take five he warm before meals, three times daily. A slight purgation should occur. For deficiency patterns, add Dihuang Miwan (Rehmannia Honey Pill) to gently eliminate the stasis.
Another prescription:
Human hair from women, burned to ash, finely ground and sifted. Mix with warm wine and ingest two qian. During the Yuanfeng era, Chancellor Wang Xungong suffered from lower abdominal pain. Imperial physicians treated him with various medicines without success, but this prescription cured him immediately.