茯苓（十八铢） 猪苓（十八铢） 泽泻（一两六铢） 白术（十八铢） 桂枝（半两去皮）
上五味为末以白饮和服方寸匕日三服多饮暖水汗出愈
伤寒汗出而渴者五苓散主之不渴者茯苓甘草汤主之
伤寒汗后阳虚湿动君相二火浮升故作燥渴其渴者湿邪较甚故用五苓不渴者湿邪较轻茯苓甘草汤苓桂姜甘泄水而疏木
和中而培土防其湿动而生水瘀也
茯苓（二两） 桂枝（二两） 生姜（二两） 甘草（一两炙）
上四味以水四升煮取二升去滓分温三服
病在阳应以汗解之反以冷水 之灌之其热被却不得去弥更益烦肉上粟起意欲饮水反不渴者服文蛤散若不瘥者与五苓
散寒实结胸无热证者与三物小陷胸汤（方在太阳一百十七）白散亦可服
五苓散证水饮在内郁格经阳而生外热病在阳分应当以汗解之使里水化汗病可立愈乃反以冷水 之灌之皮肤得冷汗孔
皆阖表热被冷水却逐而不得外去弥更益其烦躁卫郁欲发升于孔窍而外寒阖秘不能透发于是冲突皮肤肉上如粟粒凝起经热
内蒸烦热作渴意欲饮水而停水在内其实反不渴者宜服文蛤散文蛤利水解渴也若不瘥者则是水旺湿多文蛤不能胜任仍与五
苓散若寒邪上逆实结胸膈肺郁生热而外无热证则表邪已退宜与小陷胸汤黄连栝蒌泄热而涤郁半夏降逆而开结也白散桔梗
贝母清降其虚热巴豆温破其实寒令其涌泄而去以绝根株亦可服也
茯苓（十八铢） 猪苓（十八铢） 泽泻（一两六铢） 白术（十八铢） 桂枝（半两，去皮）
以上五味药研成粉末，用米汤调和服用一方寸匕，每日三次，服药后多喝暖水，以出汗为痊愈标准。
伤寒病汗出后出现口渴症状的，主治方剂为五苓散；不口渴的，主治方剂为茯苓甘草汤。
伤寒病发汗后，阳气虚弱导致湿气妄动，君火与相火浮越上升，故而产生燥渴。这种口渴是因为湿邪较重，所以使用五苓散；不口渴是因为湿邪较轻，使用茯苓甘草汤。该方能泄除水饮并疏利肝木，调和脾胃并培补中土，防止湿气妄动而生水饮瘀滞。
茯苓（二两） 桂枝（二两） 生姜（二两） 甘草（一两，炙）
以上四味药，用水四升，煮取二升药液，去除药渣，分三次温服。
病在阳分，应当通过发汗来解表，反而用冷水喷洒或浇灌身体，体内的热邪被冷水遏制而不能散发，更加感到烦闷，皮肤上起鸡皮疙瘩。想要喝水，但实际上并不觉得口渴，这种情况应服用文蛤散；如果服药后病情未愈，则给予五苓散。若是寒实结胸证，没有热象表现的，给予三物小陷胸汤（方剂见太阳篇第一百十七节），白散也可以服用。
五苓散证的病机是水饮内停，郁遏阻滞经络之阳气，从而产生外在的热象。病在阳分，本应当通过发汗使里水化为汗液而排出，疾病即可立即痊愈。然而反而用冷水喷洒浇灌，皮肤受冷，汗孔全部闭合，表层的余热被冷水遏制驱逐，无法向外发散，更加加重了烦躁不安。卫气郁结欲从汗孔发出，但因外寒闭塞不能透发，于是与邪气冲突于皮肤，肌肉表面如粟粒般凝结突起。经气之热在内蒸腾，导致烦热作渴，想要饮水，但因为体内停有水饮，实际上反而不觉得口渴，适宜服用文蛤散。文蛤能利水解渴。如果服药后仍未痊愈，则是由于水势旺盛、湿气过多，文蛤不能胜任，仍应给予五苓散。如果是寒邪上逆，实证结于胸膈，肺气郁结生热而体表无热象，说明表邪已退，适宜给予小陷胸汤。黄连、栝蒌能泄热并涤荡郁结，半夏能降逆气并开通结滞。白散由桔梗、贝母清降虚热，巴豆温破实寒，使其涌吐泄下而去，以绝病根，也可以服用。
Poria (Fuling, 18 zhu) Polyporus (Zhuling, 18 zhu) Alisma (Zexie, 1 liang 6 zhu) Atractylodes Macrocephala (Baizhu, 18 zhu) Cinnamon Twig (Guizhi, half liang, peeled)
The above five herbs are ground into powder. Mix with rice water and administer one fangcun bi (a square-inch measure) per dose, three times daily. Drink plenty of warm water after administration; recovery is indicated by sweating.
In Taiyang disease (Taiyang syndrome), if sweating occurs accompanied by thirst, Wuling San (Five-Ingredient Powder with Poria) is the primary formula. If there is no thirst, Linggui Gancao Tang (Poria, Cinnamon Twig, Licorice, and Ginger Decoction) is the primary formula.
After sweating in Taiyang disease, Yang Qi deficiency causes dampness to move turbulently, while the Ministerial Fire and Sovereign Fire float upward, resulting in dryness and thirst. This thirst indicates that the damp pathogen is relatively severe, hence the use of Wuling San. The absence of thirst indicates that the damp pathogen is lighter, hence the use of Linggui Gancao Tang. This formula drains water-dampness and soothes the Liver Wood, harmonizes the Middle Jiao and strengthens the Spleen Earth, preventing dampness from moving turbulently and generating water retention.
Poria (Fuling, 2 liang) Cinnamon Twig (Guizhi, 2 liang) Fresh Ginger (Shengjiang, 2 liang) Licorice Root (Gancao, 1 liang, honey-fried)
The above four herbs are decocted in four sheng of water until two sheng remain. Strain the dregs and divide into three warm doses.
When the disease is in the Yang aspect, it should be resolved through sweating. However, if cold water is sprayed or poured over the body, the internal heat is suppressed by the cold water and cannot dissipate, leading to increased irritability and gooseflesh on the skin. The patient may desire to drink water but actually feels no thirst. In this case, Wenli San (Clam Shell Powder) should be administered. If the condition does not improve, Wuling San (Five-Ingredient Powder with Poria) should be given. If it is a Cold-Excess Jie-Xiong (Chest Binding) syndrome without heat signs, Sanwu Xiaoxin Tang (Three-Ingredient Minor Chest-Expelling Decoction) is indicated (see Taiyang Chapter 117); Baisan (White Powder) may also be used.
The pathology of Wuling San syndrome involves water-fluid retention internally, which stagnates and blocks the Yang Qi of the meridians, thereby generating external heat. Since the disease is in the Yang aspect, it should theoretically be resolved by sweating, transforming internal water into sweat, thus curing the disease immediately. However, spraying or pouring cold water causes the pores to close due to cold, trapping the residual exterior heat which cannot escape outward, thereby exacerbating irritability. The Defensive Qi,郁结 (stagnant) and attempting to exit through the pores, is blocked by external cold, causing conflict with the pathogens at the skin level, resulting in granular elevations on the muscle surface. Internal steaming of meridian heat causes irritability, fever, and thirst, prompting a desire to drink; yet, due to internal water retention, the patient actually feels no thirst. Wenli San (Clam Shell Powder) is appropriate here, as Clam Shell promotes diuresis and relieves thirst. If the condition persists, it indicates excessive water abundance and dampness, for which Clam Shell is insufficient; Wuling San (Five-Ingredient Powder with Poria) should still be administered. If Cold Pathogen reverses upward, forming an Excess binding in the chest and diaphragm, with Lung Qi stagnation generating heat but no external heat signs (indicating the exterior pathogen has retreated), Xiaoxin Tang (Minor Chest-Expelling Decoction) is indicated. Huanglian (Coptis Rhizome) and Gualou (Trichosanthes Fruit) clear heat and resolve stagnation, while Banxia (Pinellia Tuber) descends rebellious Qi and opens blockages. Baisan (White Powder) uses Jiegeng (Platycodon Root) and Beimu (Fritillaria Bulb) to clear and descend deficient heat, and Badou (Croton Seed) to warmly break excess cold, inducing vomiting and purging to eliminate the root cause; this may also be administered.