无物无声，欲吐不吐，气至咽而复入，心中兀兀不宁。
主方 半夏 茯苓 陈皮（各二钱） 生姜七片，煎成，加姜汁热服。
有痰而虚加参、术、草；胃寒，丁香理中汤（方见寒门）；火，姜，连之类。
（附∶吐清水）
经曰∶诸呕吐酸，皆属于热。或以吐酸为寒者，盖胃伤生冷硬物则发，殊不知寒凉抑遏肠胃，
阳气怫郁而为热也。吞酸与吐酸不同，吐酸是湿热郁于肝，出于胃，随气上升而吐出也；吞酸乃
气郁日久，不能发越，伏于肺胃之间，咯不出，咽不下。肌表复因风寒外束，则内郁愈甚而酸味
刺心。肌表得温暖，则腠理开豁而略解。或有用辛香燥热汤丸而暂愈者，因本热标寒，辛以散表
故也。如过服温热之药，致津液涸竭，反成噎膈、翻胃之证，久病必宜散郁火，少佐辛温。脉迟
寒、数热、浮紧、热内郁、寒外束。
主方 陈皮 苍术 茯苓 半夏（泡） 栀子（姜炒） 黄连（姜炒） 香附（童便炒）
红豆蔻（研） 神曲（各一钱） 吴茱萸（八分） 甘草（三分）上加生姜煎服。
寒加丁香、藿香；热加黄芩（酒炒）；吐酸加山楂、扁豆、木香、砂仁；痰加南星；吞酸用
生料苍、陈、朴、草、曲、芽，加姜，水煎服。治酸必用吴茱萸（泡过）、苍术、神曲、红豆之
类。
连芩茱萸丸 治湿热吐酸。
黄连（一两，陈土炒） 苍术（七钱半） 黄芩（土炒） 陈皮 吴茱萸（各五分）
上为末，神曲糊丸绿豆大，津液咽下。
神橘丸 治中脘宿食留饮，酸蜇心痛，口吐酸水。
神曲（炒） 橘皮 苍术（等分）
共为细末，神曲糊丸，每百丸姜汤下。
加味二陈汤 （方见痰门） 痰饮吐酸，头眩，或食生冷，脾胃不和，加丁香九粒。
There is no sound and no substance being vomited; there is an urge to vomit but nothing comes out. The Qi rises to the throat and then returns inward, causing a sense of extreme restlessness in the heart.
Main Formula: Banxia (Pinelliae Rhizoma), Fuling (Poria), Chenpi (Citri Reticulatae Pericarpium) (each 2 qian), Shengjiang (Zingiberis Rhizoma Recens) (7 slices). Decoct and take hot after adding Jiangzhi (Ginger Juice).
If there is Phlegm and deficiency, add Renshen (Ginseng Radix et Rhizoma), Baizhu (Atractylodis Macrocephalae Rhizoma), and Gancao (Glycyrrhizae Radix et Rhizoma); if it is Stomach Cold, use Dingxiang Lizhong Tang (Dianthermum Magnoliae and Gastrodia Decoction) (see "Cold Section" for formula); if it is Fire, use drugs such as Ganjiang (Zingiberis Rhizoma) and Huanglian (Coptidis Rhizoma).
(Attachment: Vomiting clear water)
The Classic says: "All kinds of vomiting and acid regurgitation belong to Heat." Some regard acid regurgitation as Cold, attributing it to the consumption of cold, raw, or hard foods. However, they fail to realize that cold and cool substances suppress the intestines and stomach, causing Yang Qi to be constrained and transform into Heat. Swallowing acid differs from vomiting acid. Vomiting acid is caused by Damp-Heat stagnating in the Liver and emerging from the Stomach, rising with the Qi and being vomited out. Swallowing acid occurs when Qi stagnation lasts for a long time without dispersing, lying latent between the Lungs and Stomach; it cannot be coughed up nor swallowed down. If the body surface is further bound by Wind-Cold external pathogens, the internal stagnation becomes more severe, and the sour taste pierces the heart. If the body surface receives warmth, the Couli (pores) open, and the symptoms slightly resolve. Or, some may temporarily recover using pungent, aromatic, dry, and hot decoctions or pills because the root is Heat while the branch is Cold, and pungent substances can disperse the exterior. If too many warm and hot medicines are taken, leading to the exhaustion of Body Fluids, it may instead result in Yi Ge (dysphagia) or Fan Wei (regurgitation) syndromes. For chronic illness, one must dissipate stagnant Fire, assisting with a small amount of pungent-warm substances. A slow pulse indicates Cold; a rapid pulse indicates Heat; floating and tight pulses indicate Heat constrained internally and Cold binding externally.
Main Formula: Chenpi (Citri Reticulatae Pericarpium), Cangzhu (Atractylodis Rhizoma), Fuling (Poria), Banxia (Pinelliae Rhizoma, processed), Zhizi (Gardeniae Fructus, stir-fried with ginger juice), Huanglian (Coptidis Rhizoma, stir-fried with ginger juice), Xiangfu (Cyperi Rhizoma, stir-fried with child's urine), Hongdoukou (Myristicae Semen), Shenqu (Massae Fermentatae Medicamentosa) (each 1 qian), Wuzhuyu (Evodiae Fructus) (8 fen), Gancao (Glycyrrhizae Radix et Rhizoma) (3 fen). Add Shengjiang (Zingiberis Rhizoma Recens) and decoct.
For Cold, add Dingxiang (Eugeniae Flos) and Huoxiang (Agastaches Herba); for Heat, add Huangqin (Scutellariae Radix, wine-fried); for vomiting acid, add Shanzha (Crataegi Fructus), Biandou (Dolichoris Semen), Muxiang (Aucklandiae Radix), and Sharen (Amomi Fructus); for Phlegm, add Nanting (Arisaematis Rhizoma); for swallowing acid, use raw Cangzhu (Atractylodis Rhizoma), Chenpi (Citri Reticulatae Pericarpium), Houpo (Magnoliae Officinalis Cortex), Gancao (Glycyrrhizae Radix et Rhizoma), Shenqu (Massae Fermentatae Medicamentosa), and Yaya (Hordei Fructus Germinatus), add Shengjiang (Zingiberis Rhizoma Recens), and decoct with water. Treating acid requires the use of Wuzhuyu (Evodiae Fructus, processed), Cangzhu (Atractylodis Rhizoma), Shenqu (Massae Fermentatae Medicamentosa), Hongdoukou (Myristicae Semen), and similar substances.
Lian Qin Zhu Yu Wan (Coptis, Scutellaria, and Evodia Pill): Treats vomiting acid due to Damp-Heat.
Huanglian (Coptidis Rhizoma) (1 liang, stir-fried with aged earth), Cangzhu (Atractylodis Rhizoma) (7.5 qian), Huangqin (Scutellariae Radix, stir-fried with earth), Chenpi (Citri Reticulatae Pericarpium), Wuzhuyu (Evodiae Fructus) (each 5 fen).
Grind into powder, make pills with Shenqu paste to the size of mung beans, swallow with saliva.
Shen Ju Wan (Divine Orange Pill): Treats retained food and fluid accumulation in the Zhongwan (CV12) area, sour stinging pain in the heart, and vomiting sour water.
Shenqu (Massae Fermentatae Medicamentosa, stir-fried), Jupi (Citri Reticulatae Pericarpium), Cangzhu (Atractylodis Rhizoma) (equal parts).
Grind into fine powder, make pills with Shenqu paste. Take 100 pills each time with Ginger Soup.
Jiawei Erchen Tang (Modified Two-Chen Decoction) (see "Phlegm Section" for formula): Treats vomiting acid due to Phlegm-Fluid, dizziness, or disharmony of the Spleen and Stomach caused by consuming cold and raw foods. Add Dingxiang (Eugeniae Flos) (9 grains).