主治浊唾肿脓也，旁治咽喉痛。
考 证
排脓汤，证阙。
桔梗白散证曰∶出浊唾腥臭、久久吐脓。
桔梗汤证曰∶出浊唾腥臭、久久吐脓。
排脓散，证阙。
以上四方，其用桔梗者，或三两、或一两、或三分、或二分。
上四方者，皆仲景之方也，而排脓汤，以桔梗为君药也，不载其证。今乃历观其用桔梗
诸方，或肺痈、或浊唾腥臭、或吐脓也。而以桔梗为君药者，名为排脓，则其排脓也明矣。
互 考
排脓汤之证虽阙，而桔梗汤观之，则其主治明矣。桔梗汤证曰∶出浊唾腥臭，久久吐脓。
仲景曰∶咽痛者，可与甘草汤，不差者，与桔梗汤也；是乃甘草者，缓其毒之急迫也。而浊
唾吐脓，非甘草之所主，故其不差者，乃加桔梗也。由是观之，肿痛急迫，则桔梗汤；浊唾
吐脓多，则排脓汤。
辨 误
排脓汤及散，载在《金匮》肠痈部。桔梗汤及白散，亦有肺痈之言。盖肠痈肺痈之论，
自古而纷如也。无有明辨，欲极之而不能也。人之体中，不可见也。故谓无肺痈肠痈者妄也，
谓有肺痈肠痈者亦妄也。凡吐下臭脓者，其病在胸也，而为肺痈。其病在腹也，而为肠痈，
其亦可也。治之之法，不为名所拘，而随其证，是为仲景也。
品 考
桔梗 处处出焉。药铺所鬻者，淅而白洁，脱其气味也，不可不择焉。唯去其土泥，而
不杀
Indicated for turbid saliva (turbid sputum) and swelling with pus, and incidentally for sore throat.
Textual Research
The indications for Painong Tang (Drain Pus Decoction) are missing.
The indication for Jiegeng Baisan (Platycodon and Arisaema Powder) states: discharge of turbid, foul-smelling saliva, and expectoration of pus after a long period.
The indication for Jiegeng Tang (Platycodon Decoction) states: discharge of turbid, foul-smelling saliva, and expectoration of pus after a long period.
The indications for Painong San (Drain Pus Powder) are missing.
In the above four formulas, the dosage of Jie Geng (Platycodon Root) varies: some use three qian, some one qian, some three fen, and some two fen.
All four formulas above are from Zhang Zhongjing. In Paiong Tang, Jie Geng is the Jun herb (principal ingredient), but its specific indication is not recorded. By examining all formulas containing Jie Geng, we find they treat either Fei Yong (Lung Abscess), or turbid foul-smelling saliva, or expectoration of pus. Since the formula named "Painong" (Drain Pus) uses Jie Geng as the principal ingredient, its function of draining pus is clear.
Cross-Reference
Although the indication for Painong Tang is missing, it becomes clear by observing Jie Geng Tang. The indication for Jie Geng Tang states: discharge of turbid, foul-smelling saliva, and expectoration of pus after a long period.
Zhang Zhongjing stated: For sore throat, Gan Cao Tang (Licorice Decoction) may be given; if ineffective, Jie Geng Tang is given. This is because Gan Cao (Licorice Root) acts to relieve the urgency of toxicity. However, turbid saliva and pus expectoration are not primarily treated by Gan Cao; therefore, when ineffective, Jie Geng is added. From this perspective, for urgent pain and swelling, Jie Geng Tang is used; for abundant turbid saliva and pus expectoration, Painong Tang is used.
Correction of Errors
Painong Tang and Painong San are recorded in the Intestinal Abscess section of *Jingui Yaolue* (Essential Prescriptions from the Golden Cabinet). Jie Geng Tang and Jie Geng Baisan also mention Lung Abscess. Discussions on Intestinal Abscess and Lung Abscess have been chaotic since ancient times. Without clear differentiation, reaching an ultimate conclusion is impossible. The internal structures of the human body are invisible. Thus, denying the existence of Lung and Intestinal Abscesses is erroneous, just as affirming them without distinction is also erroneous. Generally, expectoration of foul pus indicates the disease is in the chest, which can be termed Lung Abscess; if the disease is in the abdomen, it can be termed Intestinal Abscess. This is acceptable. The method of treatment should not be constrained by names but should follow the syndrome pattern; this is the approach of Zhang Zhongjing.
Quality Examination
Jie Geng grows everywhere. The Jie Geng sold in pharmacies is washed until white and clean, but its medicinal aroma is lost; thus, careful selection is necessary. One need only remove the soil and mud, and no further processing... (text cuts off)