大吐吐症多是胃气之伤然而胃气不同有阴阳之别如吐而有声或痛者阳症也倘吐而无声又
纯是
清水或今日饮食而明日尽情吐出者乃阴症也或腹中不痛或遇寒即发无非阴症倘辨之不清妄自
用药必致杀人我亦更传一法以辨阴阳之殊亦看舌之滑与燥而已矣大约阳症口必渴而舌必燥阴
症口不渴而舌且滑也治之法阳症之吐用方名为引火止吐汤此方之妙妙在茯苓至一两盖火势
之上冲由于水道之下闭用茯苓以健胃又利水下行黄连止心火余俱调和得法自然火不逆而水
下通又何至吐逆之生耶至于阴虚作吐实为难治不比阳吐一剂便可奏功也盖阴虚而吐乃肾中之
火虚也肾火既衰则脾无火养食留脾中成为阴寒世界下不能化自然上涌而吐矣法当温补命门之
火使火生水中然后土生火内方用济火神丹服后即用饮压之一剂轻二剂更轻十剂愈三十剂全
愈矣盖阴病之吐其来非一日矣不大补之则阴不能生而阳不能化或求速效再加人参三钱于方中
可减十分之二然终不若原方之妙盖病是纯阴不必再借阳药况方中原有白术阳药在其中矣又
何必更用参之多事哉人不知生病之重惟求速愈或改用吾方或别求治病未必不反害之也
引火止吐汤
黄连（一钱） 茯苓（一两） 白术（五钱） 陈皮（一钱） 神曲（一钱） 麦冬（一钱） 人参（二钱）
砂仁（一粒） 藿香（五分） 生姜（三片） 水煎服
济火神丹
肉桂（三钱） 熟地（一两） 山萸（五钱） 五味（二钱） 茯苓（五钱） 山药（一两） 肉果（二枚）
白术（一两） 芡实（五钱） 水煎服
大吐症大多是由于胃气受损所致，然而胃气的损伤有阴证和阳证的区别。如果呕吐伴有声音或疼痛，属于阳证；倘若呕吐没有声音，且吐出物完全是清水，或者是今天吃的食物明天全部吐出，这属于阴证。或者腹部不疼痛，或者遇寒冷就发作的，无非都是阴证。如果辨证不清，盲目用药，必然导致死亡。我也再传授一种方法来辨别阴阳的不同，就是看舌苔是滑润还是干燥罢了。大致来说，阳证口渴且舌苔干燥，阴证口不渴且舌苔滑润。治疗方面，阳证的呕吐使用名为“引火止吐汤”的方剂。这个方子的妙处在于茯苓用到一两重。火势上冲是因为水道下闭，用茯苓来健运脾胃并利水下行，黄连清心火，其余药物调和得当，自然火气不逆而水液下行通畅，又怎么会发生呕吐呢？至于阴虚引起的呕吐，确实难以治疗，不像阳证呕吐一剂药就能见效。因为阴虚呕吐是肾中阳气虚衰所致。肾火既然衰弱，脾脏就没有火来温养，食物停滞在脾中形成阴寒的世界，下部不能消化，自然向上涌出而呕吐。治法应当温补命门之火，使火生于水中，然后土生火内。方用“济火神丹”，服用后随即用饮水压制（指服药后少量多次饮水以助药力或防止格拒），一剂症状减轻，两剂更轻，十剂痊愈，三十剂完全康复。因为阴病引起的呕吐，其成因并非一日之积。如果不大补，则阴不能生而阳不能化。有人追求速效，在方中加入三钱人参，可以减少十分之二的疗效，但终究不如原方精妙。因为这是纯阴之病，不必再借用阳药，况且方中原有的白术本身就是阳药，又何必多此一举再加人参呢？人们不知道生病的严重性，只求快速痊愈，或者改用我的方子，或者另求治病之法，未必不会反而造成伤害。
引火止吐汤
黄连（一钱） 茯苓（一两） 白术（五钱） 陈皮（一钱） 神曲（一钱） 麦冬（一钱） 人参（二钱）
砂仁（一粒） 藿香（五分） 生姜（三片） 水煎服
济火神丹
肉桂（三钱） 熟地（一两） 山萸（五钱） 五味（二钱） 茯苓（五钱） 山药（一两） 肉果（二枚）
白术（一两） 芡实（五钱） 水煎服
Great vomiting syndromes are mostly caused by injury to the Stomach Qi (Stomach energy). However, there is a distinction between Yin and Yang patterns in such injuries. If vomiting is accompanied by sound or pain, it is a Yang pattern; if vomiting occurs without sound and the vomitus consists purely of clear water, or if food eaten today is completely vomited out tomorrow, this is a Yin pattern. If there is no abdominal pain, or if symptoms occur upon exposure to cold, these are invariably Yin patterns. If differentiation is unclear and medication is administered blindly, it will inevitably lead to death. I shall also transmit another method to distinguish between Yin and Yang: simply observe whether the tongue coating is slippery or dry. Generally speaking, Yang patterns involve thirst and a dry tongue, whereas Yin patterns involve no thirst and a slippery tongue. For the treatment of vomiting in Yang patterns, the formula named "Yin Huo Zhi Tu Tang" (Fire-Guiding Vomiting-Stop Decoction) is used. The brilliance of this formula lies in the use of Fu Ling (Poria) up to one liang. The upward rushing of Fire is due to the blockage of the Water pathways below; Fu Ling strengthens the Spleen and Stomach while promoting the downward flow of water, Huang Lian (Coptis Rhizome) clears Heart Fire, and the remaining herbs are harmonized properly. Naturally, the rebellious Fire will subside and Water will flow downward smoothly, preventing the occurrence of vomiting. As for vomiting caused by Yin deficiency, it is indeed difficult to treat and cannot be cured with a single dose like Yang-pattern vomiting. This is because Yin-deficiency vomiting stems from the deficiency of Ming Men Fire (Gate of Life Fire) in the Kidney. Once Kidney Fire declines, the Spleen lacks Fire nourishment, causing food to stagnate in the Spleen and create a world of Yin-Cold. Unable to transform at the lower level, it naturally surges upward, resulting in vomiting. The therapeutic method should be to warm and tonify the Ming Men Fire, allowing Fire to generate within Water, thereby enabling Earth to generate Fire internally. Use Ji Huo Shen Dan (Fire-Nourishing Divine Elixir). After ingestion, drink water to assist the medicinal action (or prevent rejection); one dose alleviates symptoms, two doses further alleviate them, ten doses result in recovery, and thirty doses ensure complete cure. Vomiting caused by Yin-pathogens arises from accumulation over a long period. Without substantial tonification, Yin cannot generate and Yang cannot transform. Some seek rapid effects by adding three qian of Ren Shen (Ginseng Root) to the formula, which may reduce efficacy by two-tenths compared to the original, but ultimately it is not as exquisite as the original prescription. Since this is a pure Yin disease, there is no need to borrow Yang-tonifying herbs; moreover, Bai Zhu (Atractylodes Macrocephala Rhizome) in the original formula is already a Yang herb. Why add unnecessary Ren Shen? People do not realize the severity of their illness and only seek quick recovery; they might change to my formula or seek other treatments, which may inadvertently cause harm.
Yin Huo Zhi Tu Tang (Fire-Guiding Vomiting-Stop Decoction)
Huang Lian (Coptidis Rhizoma, 1 qian), Fu Ling (Poria, 1 liang), Bai Zhu (Atractylodis Macrocephalae Rhizoma, 5 qian), Chen Pi (Citri Reticulatae Pericarpium, 1 qian), Shen Qu (Massa Medicata Fermentata, 1 qian), Mai Dong (Ophiopogonis Radix, 1 qian), Ren Shen (Ginseng Radix et Rhizoma, 2 qian), Sha Ren (Amomi Fructus Rotundus, 1 grain), Huo Xiang (Agastaches Herba, 5 fen), Sheng Jiang (Zingiberis Rhizoma Recens, 3 slices). Decoct in water and take orally.
Ji Huo Shen Dan (Fire-Nourishing Divine Elixir)
Rou Gui (Cinnamomi Cortex, 3 qian), Shu Di Huang (Rehmanniae Radix Praeparata, 1 liang), Shan Yu Rou (Corni Fructus, 5 qian), Wu Wei Zi (Schisandrae Chinensis Fructus, 2 qian), Fu Ling (Poria, 5 qian), Shan Yao (Dioscoreae Rhizoma, 1 liang), Rou Dou Kou (Myristicae Semen, 2 pieces), Bai Zhu (Atractylodis Macrocephalae Rhizoma, 1 liang), Qian Shi (Euryales Semen, 5 qian). Decoct in water and take orally.