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Whenever children suffer from vomiting, it is mostly due to stomach injury causing vomiting, or phlegm accumulation in the upper jiao (Upper Burner), for which He Wei Er Chen Tang (Harmonize Stomach Two-Chen Decoction) is suitable:
Banxia (Pinelliae Rhizoma), Guangpi (Citri Reticulatae Pericarpium), Huoxiang (Agastaches Herba), Shenqu (Massae Fermentatae Medicinalis), Maiya (Hordei Fructus Germinatus, stir-fried), Zipu (Magnoliae Officinalis Cortex), Cangzhu (Atractylodis Rhizoma), Fuling (Poria), each at one qian; Gancao (Glycyrrhizae Radix et Rhizoma) at five fen; Paojiang (Prepared Ginger) as a guide; decocted in water and taken orally.
If lips are red with vomiting, add Zhuru (Bambusae Caulis in Taenia), Shigao (Gypsum Fibrosum), Huangqin (Scutellariae Radix), each at one qian; if urine is scanty, add Mutong (Akebiae Caulis), Qianren (Plantaginis Semen), each at one qian; if vomiting is accompanied by diarrhea with alternating chills and fever, add Zisu (Perillae Folium), Qianhu (Peucedani Radix), Baizhi (Angelicae Dahuricae Radix), Zexie (Alismatis Rhizoma); if severe cold causes incessant vomiting, take Zhu Han Dang Jing Tang (Expel Cold and Dispel Shock Decoction, see the chapter on Convulsions), following the modifications listed below, using Jiangshengzhi (Fresh Ginger Juice) and Fengmi (Honey) as guides, decocted and taken orally.

Pediatric cholera (Huoluan) arises suddenly. Its symptoms are characterized by violent turmoil and restlessness without respite. It is mostly caused by food stagnation combined with cold damage (Shanghan), leading to disharmony of yin and yang, resulting in vomiting above and diarrhea below, along with irritability and confusion. If the pathogenic factor is in the upper jiao, it causes vomiting; if in the lower jiao, it causes diarrhea; if in the middle jiao, it causes both vomiting and diarrhea. There are cases where neither vomiting nor diarrhea can occur, known as Dry Cholera (Gan Huoluan), also called Intestinal Colic Sha (Jiaochang Sha). This occurs because the pathogenic factors in the spleen and stomach have no way to exit internally. If accompanied by panting, chest fullness, and convulsions, fewer than one in ten survives. For all cases of vomiting and diarrhea, treatment must distinguish between cold and heat syndromes. At the initial stage, do not drink rice soup, as treating patients whose stomach qi is dominated by pathogenic factors is difficult; instead, Huoxiang Zhengqi San (Agastache Powder to Rectify the Qi) is suitable.
If diarrhea precedes vomiting, it indicates deficiency-cold of the spleen and stomach. Thus, watery stools appear first, vomiting is slight, breath is slow, spirit is lethargic, sweat appears on the forehead, and the six pulses are deep and fine. This is a deficiency-cold syndrome, suitable for warming treatment using Liu Junzi Tang (Six Gentlemen Decoction). If ineffective, use Lizhong Tang (Regulate the Middle Decoction) with added Huoxiang and Mugua (Chaenomelis Fructus), each at one qian.
If vomiting precedes diarrhea, it indicates heat in the spleen and stomach. Thus, there is panting, red lips, foamy vomit, flushed face, thirst for drinking fluids, and a surging and rapid pulse. This is a heat syndrome. Treat with harmonizing methods using Wuling San (Five-Ingredient Powder with Poria) with added Huoxiang.
Among cholera cases, those who cannot vomit above nor defecate below are in the most critical condition. Quickly induce vomiting using salt water. Only after the retained food and accumulated phlegm are expelled should medication be administered. Alternatively, prick the sides of the fingernails to let blood out, or prick Weizhong (BL40) located at the popliteal crease to let blood out, which will provide relief. Afterwards, administer Huoxiang Zhengqi San.
Huoxiang Zhengqi San treats wind-pathogen injuring the stomach, disharmony of yin and yang, causing vomiting and diarrhea.
Zisu (Perillae Folium), Fupi (Tangerine Peel with Septum), Jiegeng (Platycodonis Radix), Fuling (Poria), Faxia (Prepared Pinellia), Zipu (Magnoliae Officinalis Cortex), Baizhi (Angelicae Dahuricae Radix), Guangpi (Citri Reticulatae Pericarpium), Zhigancao (Prepared Licorice Root), equal parts; Shengjiang (Fresh Ginger, three slices), Dazao (Jujube, three fruits); decocted in water and taken orally.
Liu Junzi Tang (Six Gentlemen Decoction) is Si Junzi Tang (Four Gentlemen Decoction) plus Chenpi (Tangerine Peel) and Faxia (Prepared Pinellia); see the chapter on Summerheat Injury.
Lizhong Tang (Regulate the Middle Decoction) is seen in the chapter on Summerheat Injury; add Huoxiang and Mugua, each at two qian.
Modified Wuling San treats summerheat-induced cholera with vomiting and diarrhea.
Jiaozhu (Charred Atractylodes Rhizoma), Fuling (Poria), each at two qian; Zhuling (Polyporus), Zexie (Alismatis Rhizoma), Angui (Cinnamomi Ramulus), Huoxiang (Agastaches Herba), Mugua (Chaenomelis Fructus), Xisha (Amomi Fructus Rotundus), each at one qian; Shengjiang (Fresh Ginger, one slice), Dazao (Jujube, one fruit); Dengxin (Junci Medulla) as a guide.
Salt Water Vomiting Method: Mix table salt with warm water until slightly salty, prepare one large bowl, and have the child drink it. After some time, stimulate the throat with fingers to induce vomiting. Relief comes immediately after one episode of vomiting.
Another prescription uses twenty grains each of Ludou (Mung Bean) and Hujiao (Black Pepper), ground into fine powder, decocted in water and taken orally. If extremely thirsty, grind these two substances finely and mix with fresh well-water to take orally for relief.
Another prescription uses Liuyi San (Six-to-One Powder) mixed with ginger juice water.