五皮饮用五般皮。陈茯姜桑大腹奇。（陈皮茯苓皮姜皮桑白皮大腹皮。）或用五加易桑白。
脾虚肤胀此方宜。（脾不能为胃行其津液。故水肿。半身以上宜汗。半身以下宜利小便。此
方于泻水之中。仍寓调补之意。皆用皮者。水溢皮肤。以皮行皮也。）
陈修园曰。此方出华元化中藏经。颇有意义。宜审其寒热虚实。而加寒温补泻之品。
治肥盛之人。湿痰为患。痰喘胀满。
二陈汤用夏和陈。益以茯苓甘草臣。（半夏二钱。陈皮一钱。茯苓三钱炙。甘草八分。
加姜
陈修园曰。此方为祛痰之通剂也。痰之本。水也。茯苓制水以治其本。痰之动。湿也。
茯苓渗湿以镇其动。方中只此一味。是治痰正药。其余半夏降逆。陈皮顺气。甘草调中。皆
取之以为茯苓之佐使耳。故仲景书。凡痰多者俱加茯苓。呕者。俱加半夏。古圣不易之法也。
今人不穷古训。以半夏为祛痰之专品。仿稀涎散之法。制以明矾。致降逆之品。反为涌吐。
堪发一叹。以此方为三阳解表之剂。服之留邪生热。至死不悟。余于真方桂枝汤下已详言之。
兹不复赘。
萆 厘清主石蒲。草梢乌药智仁俱。（乌药益智仁石菖蒲萆 各等分。甘草梢减半。）煎
成又入盐些少。（加盐少许。）淋浊流连数服驱。（遗精。白浊。）
汪 庵曰。萆 能泄厥阴阳明湿热。去浊厘清。乌药疏逆气而止便数。益智固脾肾而开
郁
此以疏泄为禁止者也。
五皮散由五种果皮组成。分别是陈皮、茯苓皮、生姜皮、桑白皮和大腹皮，这五味药搭配起来十分奇妙。（陈皮、茯苓皮、姜皮、桑白皮、大腹皮。）或者可以用五加皮替换桑白皮。
此方适宜治疗脾虚导致的皮肤肿胀。（因为脾脏不能为胃输送津液，所以导致水肿。半身以上的肿胀适宜用发汗法，半身以下的肿胀适宜用利小便法。此方在泻水的同时，仍蕴含调理补益的意思。全部使用皮类药物，是因为水湿溢于皮肤，以皮行皮，同类相求。）
陈修园说：此方出自华元化的《中藏经》，很有深意。应当仔细辨别寒热虚实，然后加入寒凉、温热、补益、泻实相应的药物。
（二陈汤）治疗身体肥胖之人，因湿痰引发的病症，如痰喘、胸腹胀满。
二陈汤由半夏和陈皮组成，辅以茯苓和甘草作为臣药。（半夏二钱，陈皮一钱，茯苓三钱炙过，甘草八分。加入生姜。）
陈修园说：此方是祛除痰饮的通治之剂。痰的根本来源是水，茯苓能制约水气以治其本；痰的变动源于湿，茯苓能渗利湿气以平息其动。方中只有这一味药，才是治疗痰饮的正药。其余的半夏用于降逆气，陈皮用于顺气机，甘草用于调和脾胃，都是取它们作为茯苓的佐使药。所以张仲景的书中，凡是痰多的都加上茯苓，呕吐的都加上半夏，这是古代圣贤不可更改的方法。如今的人不探究古人的训诫，把半夏当作祛痰的专用药，模仿稀涎散的方法，用明矾炮制半夏，导致原本降逆的药物反而变成了涌吐药，实在令人叹息。还有人将此方当作三阳经解表的药剂服用，导致邪气滞留而生热，至死都不醒悟。我在真方桂枝汤的注解下已经详细说明过了，这里不再赘述。
萆薢分清饮主要使用石菖蒲，配合甘草梢、乌药、益智仁。（乌药、益智仁、石菖蒲、萆薢各等分，甘草梢减半量。）煎成后加入少许盐。（加少量盐。）淋证、浊证反复发作，服用几副即可驱除。（遗精，白浊。）
汪昂说：萆薢能泄去厥阴、阳明经的湿热，去除浊气，澄清清窍。乌药能疏理逆乱之气而止住尿频，益智仁能固护脾肾而开通郁结。
此方是以疏泄的方法来起到禁止（滑脱）的作用。
Wupi San (Five-Bark Powder) consists of five types of barks. They are Chenpi (Exocarpium Citri Reticulatae), Fuling Pi (Poria with Hostwood), Jiang Pi (Pericarpium Zingiberis Recens), Sangbaipi (Cortex Mori Radicis), and Dafupi (Fructus Trogopterori), which form a unique combination. (Chenpi, Fuling Pi, Jiang Pi, Sangbaipi, Dafupi.) Alternatively, Wujia Pi (Cortex Acanthopanacis) can be used to replace Sangbaipi.
This formula is suitable for treating skin edema caused by Spleen deficiency. (Because the Spleen cannot transport fluids for the Stomach, edema results. Edema above the middle body is suitable for diaphoresis, while edema below the middle body is suitable for promoting urination. This formula contains the intent of regulation and tonification amidst its water-draining action. All ingredients use bark parts because water overflows into the skin; using barks treats skin with barks, following the principle of similarity.)
Chen Xiuyuan stated: This formula originates from Hua Yuanhua's *Zhongzang Jing* (Classic of the Middle Viscera) and holds profound meaning. One should carefully distinguish between cold, heat, excess, and deficiency, and then add appropriate herbs for cooling, warming, tonifying, or purging.
(Two-Chen Decoction) Treats conditions in obese individuals caused by damp-phlegm, such as phlegm-induced wheezing and chest/abdominal distension.
Erchen Tang (Two-Chen Decoction) uses Banxia (Pinelliae Rhizoma) and Chenpi (Exocarpium Citri Reticulatae), assisted by Fuling (Poria) and Gancao (Glycyrrhizae Radix et Rhizoma). (Banxia 2 qian, Chenpi 1 qian, Fuling 3 qian roasted, Gancao 8 fen. Add fresh ginger.)
Chen Xiuyuan stated: This formula is a general agent for resolving phlegm. The root of phlegm is water; Fuling controls water to treat the root. The movement of phlegm stems from dampness; Fuling drains dampness to stabilize its movement. Among the ingredients, only this one herb is the true medicine for treating phlegm. The others, Banxia for descending rebellious qi, Chenpi for smoothing qi, and Gancao for harmonizing the middle, serve merely as assistants and guides to Fuling. Therefore, in Zhang Zhongjing’s writings, whenever there is excessive phlegm, Fuling is added; whenever there is vomiting, Banxia is added. This is an unchangeable method of the ancient sages. Modern people do not explore ancient teachings, mistakenly regarding Banxia as the exclusive drug for resolving phlegm. Imitating the method of Xixian San (Thin Saliva Powder), they process it with Mingfan (Alumen), causing a drug intended to descend rebellious qi to instead induce vomiting. This is truly lamentable. Some further mistake this formula for a solution-releasing agent for the Three Yang meridians; taking it causes pathogenic factors to linger and generate heat, leading to death without realization. I have explained this in detail under the annotation for the authentic Guizhi Tang (Cinnamon Twig Decoction), so I will not repeat it here.
Bixie Fenqing Yin (Dioscorea Hypoglauca Clearing Turbid Decoction) primarily uses Shichangpu (Rhizoma Acori Tatarinowii), along with Gancao Shao (Radix Glycyrrhizae with tip), Wuyao (Linderae Radix), and Yizhiren (Semen Alpiniae Oxyphyllae). (Wuyao, Yizhiren, Shichangpu, Bixie each in equal parts; Gancao Shao in half amount.) After decoction, add a small amount of salt. (Add a little salt.) It drives away lingering stranguria and turbid urine after several doses. (Spermatorrhea, leukorrhea/turbid urine.)
Wang Ang stated: Bixie (Dioscoreae Hypoglaucae Rhizoma) can drain damp-heat from the Jueyin and Yangming meridians, removing turbidity and clarifying the clear orifices. Wuyao (Linderae Radix) disperses rebellious qi and stops frequent urination; Yizhiren (Semen Alpiniae Oxyphyllae) secures the Spleen and Kidney and opens up depression.
This formula achieves restriction (of leakage) through dispersion and drainage.