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Treats vomiting caused by Huoluan (cholera-like syndrome with sudden vomiting and diarrhea).
Renshen (Ginseng Radix), Ganjiang (Dried Ginger Rhizome), Baizhu (Atractylodis Macrocephalae Rhizoma) (each 3 qian), Gancao (Licorice Root, honey-fried) (1 qian).
Take the above as one dose, add two zhong of water, decoct to one zhong, take at any time without restriction.
If caused by invasion of cold qi and dampness, add Fuzi (Prepared Aconite Lateral Root) (1 qian), named Fuzi Lizhong Tang (Aconite Decoction for Regulating the Middle).
If Huoluan presents with vomiting and diarrhea, add Juhong (Citri Reticulatae Pericarpium Rubrum) and Qingpi (Citri Reticulatae Pericarpium Viride) (each 1.5 qian), named Zhizhong Tang (Decoction for Regulating the Middle).
In cases of Gan Huoluan (dry cholera, characterized by inability to vomit or defecate accompanied by severe abdominal pain), where there is heart and abdominal pain, first administer a small amount of salt water frequently, wait until the patient vomits thoroughly and feels relieved, then administer this medicine.
If there is vomiting, add Dingpi Banxia (Pinelliae Tuber with Pericarpium Citri Reticulatae) (each 1 qian) and Shengjiang (Fresh Ginger Rhizome) (10.5 slices) to Zhizhong Tang. If there is diarrhea, add Juhong (Citri Reticulatae Pericarpium Rubrum) and Fuling (Poria) (dosage omitted in source text).
If loose stools persist, add Fuzi (Prepared Aconite Lateral Root) (1 qian) to Buzhong Tang (Regulate Middle Decoction - *Note: Source says Bu Zhong, likely typo for Zhi Zhong or similar context*). If there is loss of appetite and indigestion of food and water, add Sharen (Amomi Fructus) (1 qian).
If Huoluan involves vomiting, heart and abdominal pain, and cold extremities, remove Baizhu (Atractylodis Macrocephalae Rhizoma) from the base formula and add Shu Fuzi (Prepared Aconite Lateral Root), named Sishun Tang (Four-Compliant Decoction).
If Shaoyang Cold (Cold Damage) presents with Jie Xiong (chest binding syndrome), first decoct and take Jiegeng (Platycodon Root) and Zhike (Aurantii Fructus Immaturus) in equal parts. If not cured, and after various vomiting and diarrhea episodes leading to severe chest oppression, desperation, and acute pain rising in the heart and diaphragm region (*text incomplete*).
If there is thirst, add Gualougen (Trichosanthes Root) (1 qian) to Zhishi Lizhong Tang (Immature Bitter Orange Decoction for Regulating the Middle).
If muscle cramps occur after Huoluan, add Huoxiao (Borax) and Shigao (Gypsum Fibrosum) (1 qian) to Lizhong Tang (Regulate Middle Decoction).
If there is pulsation above the navel, it indicates Kidney Qi moving; remove Baizhu (Atractylodis Macrocephalae Rhizoma) and add Guigui (Cinnamon Bark) (1.5 qian). The Kidney dislikes dryness; removing Baizhu may risk triggering Ben Tun (Fleeing Pig syndrome), hence Guigui is added.
If palpitations are frequent, add Fuling (Poria) (1 qian).
If there is desire to drink water, add Baizhu (Atractylodis Macrocephalae Rhizoma) (0.5 qian).
If there is cold sensation, add Ganjiang (Dried Ginger Rhizome) (0.5 qian).
If there is abdominal fullness, remove Baizhu (Atractylodis Macrocephalae Rhizoma) and add Fuzi (Prepared Aconite Lateral Root) (1 qian).
If excessive alcohol consumption or intake of roasted/fried hot foods causes nosebleeds (Bi Nie), add Chuanxiong (Ligusticum Chuanxiong Rhizome) (1 qian). If stomach injury leads to hematemesis, this medicine can regulate the Zhongwan (Middle Jiao).

Treats Huoluan syndrome caused by summer-heat injury in summer and autumn, excessive drinking, uncontrolled intake of raw and cold foods, leading to spleen-stomach disharmony.
Formula see "Shu Men" (Summer-Heat Section).