痰喘证宜此，俟气平就枕，然后以消痰润肺养阴开胃之方以次调之。
麻黄（去节） 芍药 细辛 干姜 甘草（炙） 桂枝（去皮，各三两） 五味子（半斤） 半夏（半斤，汤洗）
上八味，以水一斗，先煮麻黄，减二升，去上沫，纳诸药，煮取三升，去渣，温服一升。
若微利者，去麻黄，加荛花如鸡子大，熬令赤色。利属下焦阴分，不可更发其阳。荛花，《明理论》作芫
花；恐误。本草荛花、芫花，花叶相近，而荛花不常用，当时已不可得，故改用芫花，以其皆有去水之功也。
若渴者，去半夏。如栝蒌根三两。本草栝蒌根主消渴，若噎者，“噎”古作“KT ”。论云∶寒气相搏，则为
肠鸣。医乃不知，而反饮冷水，令汗大出，水得寒气，冷必相搏，其人即KT 。
按《内经》无“噎”字，疑即呃逆之轻者。去麻黄，
加附子一枚炮。《本草》∶附子温中。若小便不利，少腹满，去麻黄，加茯苓四两。小便不利而少腹满，则
水不在上而在下矣，故用茯苓。若喘者，去麻黄，加杏仁半升，去皮尖。杏仁见前。
按∶此方专治水气。盖汗为水类，肺为水源，邪汗未尽，必停于肺胃之间，病属有形，非一味发散所
能除，此方无微不到，真神剂也。
伤寒表不解，发汗未透。心下有水气，即未出之汗。干呕发热而咳，或渴、或利、或噎、或小便不利，
少腹满、或喘者，小青龙汤主之。以上皆水停心下现症，其每症治法，皆在加减中。
伤寒心下有水气，咳而微喘，发热不渴，凡水停心下者，喘而不渴。服汤已，即小青龙汤也，渴者，
此寒气去欲解也，寒饮欲去。小青龙汤主之。此倒笔法，即指“服汤已”三字，非谓欲解之后，更
服小青龙汤也。
痰饮喘证适宜使用此方，待气息平稳后入睡，然后再依次使用消痰、润肺、养阴、开胃的方剂进行调理。
麻黄（去节） 芍药 细辛 干姜 甘草（炙） 桂枝（去皮，各三两） 五味子（半斤） 半夏（半斤，汤洗）
以上八味药，用水一斗，先煮麻黄，减少二升水量，撇去水面上的浮沫，加入其余药物，煎煮至取三升药液，滤去药渣，温服一升。
如果有轻微腹泻者，去掉麻黄，加入如鸡蛋大小的荛花（Wikstroemiae Caulis），炒至变红。腹泻病位属下焦阴分，不可再发散阳气。荛花在《明理论》中写作芫花；恐怕是误写。本草书中记载荛花与芫花花叶相近，但荛花不常用，当时已经难以获得，所以改用芫花，因为两者都有去除水饮的功效。
如果口渴者，去掉半夏，加入栝蒌根（Trichosanthis Radix）三两。本草书说栝蒌根主治消渴。如果有噎膈感，“噎”古字作“KT”。论中说：寒气相互搏结，就会引起肠鸣。医生不知道这一点，反而让病人喝冷水，导致大汗出，水遇到寒气，冷气必然相互搏结，病人就会出现噎膈感。
按：《内经》中没有“噎”字，怀疑就是呃逆（hiccup）中较轻的一种。去掉麻黄，加上一枚炮制的附子（Aconiti Lateralis Radix Praeparata）。《本草》说：附子温中。如果小便不利，小腹胀满，去掉麻黄，加上茯苓四两。小便不利且小腹胀满，说明水气不在上部而在下部，所以用茯苓。如果气喘者，去掉麻黄，加上杏仁半升，去皮尖。杏仁见前文。
按：此方专门治疗水气病。汗属于水类，肺为水源，邪汗未尽，必定停滞在肺胃之间，病属有形之邪，不是单一的发散法所能消除，此方无微不至，真是神效的方剂。
伤寒表证未解，发汗不透。心下有水气，即未排出的汗液。干呕、发热而咳嗽，或者口渴、或者腹泻、或者噎膈、或者小便不利、小腹胀满、或者气喘的，用小青龙汤主治。以上都是水停于心下所表现的症状，其每种症状的治疗方法，都在方剂的加减变化中。
伤寒心下有水气，咳嗽且轻微气喘，发热但不口渴。凡是水停于心下的，表现为气喘而不口渴。服用汤药后，即指小青龙汤。如果出现口渴，这是寒气去除、病情将要解除的表现，寒饮即将散去。用小青龙汤主治。这是倒叙笔法，即指“服用汤药后”这三个字的意思，并非指病情欲解之后，再服用小青龙汤。
For phlegm-fluids asthma syndrome (Tan Chuan Zheng), this formula is suitable. Wait until the breath stabilizes before going to bed, and then sequentially regulate with formulas that resolve phlegm, moisten the lungs, nourish yin, and benefit the stomach.
Ephedrae Herba (Mahuang, 麻黄) [devoid of joints], Paeoniae Radix (Shaoyao, 芍药), Asari Radix (Xixin, 细辛), Zingiberis Rhizoma Recens (Ganjiang, 干姜), Glycyrrhizae Radix et Rhizoma (Gancao, 甘草) [roasted], Cinnamon Twig (Guizhi, 桂枝) [devoid of bark], each three liang; Schisandrae Fructus (Wuweizi, 五味子) half jin; Pinelliae Rhizoma (Banxia, 半夏) half jin, washed with boiling water.
The above eight ingredients: Use one dou of water. First decoct Ephedrae Herba (Mahuang, 麻黄) until the volume reduces by two sheng. Remove the foam on the surface. Add the remaining herbs. Decoct to obtain three sheng of liquid. Strain out the dregs. Take one sheng warm.
If there is slight diarrhea, remove Ephedrae Herba (Mahuang, 麻黄) and add Wikstroemiae Caulis (Ranghua, 荛花) the size of a chicken egg, stir-fried until reddish. Diarrhea originates from the yin aspect of the lower jiao; it should not be treated by further dispersing yang. In *Ming Li Lun*, Ranghua is written as Yuanhua; this may be an error. According to materia medica, the flowers and leaves of Ranghua and Yuanhua are similar, but Ranghua is rarely used and was already unavailable at that time, so Yuanhua was substituted because both possess the efficacy of removing fluid retention.
If there is thirst, remove Pinelliae Rhizoma (Banxia, 半夏) and add Trichosanthis Radix (Gualougen, 栝蒌根) three liang. The materia medica states that Trichanthis Radix treats Xiao Ke (wasting-thirst syndrome). If there is a sensation of choking ("Ye", anciently written as "KT"), the text says: When cold qi combats each other, it causes borborygmus. Physicians, unaware of this, instead give cold water, causing profuse sweating. When water encounters cold qi, the coldness combats, resulting in the patient experiencing a sensation of choking.
Note: The *Nei Jing* does not contain the character "Ye"; it is suspected to refer to mild hiccup (E Ni, 呃逆). Remove Ephedrae Herba (Mahuang, 麻黄) and add one prepared Aconiti Lateralis Radix (Fuzi, 附子). The *Ben Cao* states: Fuzi warms the middle. If there is difficulty in urination and fullness in the lower abdomen, remove Ephedrae Herba (Mahuang, 麻黄) and add Poria (Fuling, 茯苓) four liang. Difficulty in urination with lower abdominal fullness indicates that the water is not in the upper but in the lower part; therefore, Poria is used. If there is asthma/wheezing, remove Ephedrae Herba (Mahuang, 麻黄) and add Semen Armeniacae Amarum (Xingren, 杏仁) half sheng, devoid of skin and tips. See Xingren mentioned previously.
Note: This formula specializes in treating water qi (Shui Qi, 水气). Sweat belongs to the category of water; the lung is the source of water. If pathogenic sweat is not fully resolved, it must stagnate between the lung and stomach. The pathology involves tangible pathogens, which cannot be eliminated by simple dispersing methods alone. This formula is comprehensive and meticulous, truly a miraculous agent.
In Shang Han (Cold Damage) where the exterior pattern is unresolved and sweating has not penetrated thoroughly. There is water qi under the heart (Xin Xia, 心下), which refers to unreleased sweat. Symptoms include dry retching, fever, and cough; or thirst, or diarrhea, or choking sensation, or difficulty in urination, lower abdominal fullness, or wheezing. These are primarily treated with Xiao Qing Long Tang (Minor Blue Dragon Decoction). All the above are manifestations of water stagnation under the heart; the treatment method for each symptom lies within the modifications of the formula.
In Shang Han with water qi under the heart, cough with slight wheezing, fever without thirst. Whenever water stagnates under the heart, wheezing occurs without thirst. After taking the decoction, i.e., Xiao Qing Long Tang (Minor Blue Dragon Decoction), if thirst appears, this indicates that the cold qi is departing and the condition is about to resolve; the cold-fluid is about to dissipate. Xiao Qing Long Tang (Minor Blue Dragon Decoction) is the primary formula. This is a reverse narrative technique, referring to the phrase "after taking the decoction," not implying that Xiao Qing Long Tang (Minor Blue Dragon Decoction) is taken again after the condition resolves.