甘草（二两，炙） 白术（二两） 桂枝（四两，去皮） 附子（二枚，炮去皮，破） 上四味，以水六升，煮取
三升，去渣，温服一升，日三服，初服得微汗则解。即服桂枝汤。《论》中所云∶风湿发汗，汗大出者，但风气
去，湿气在，是故不愈也。治风湿者发其汗，但微微似欲出汗者，风湿俱去也，能食汗出，复烦者，尚有余
邪郁而未尽。服五合，恐一升多者，服六、七合为始。此言初服之始。
风湿相搏，骨节疼烦，掣痛不得屈伸，近之则痛剧，汗出短气，小便不利，恶风不欲去衣，或身微肿
者，甘草附子汤主之。此段形容风湿之状，病情略备。
桂枝（四两，去皮） 附子（三枚，炮去皮切八片） 甘草（二两，炙） 生姜（三两，切） 大枣（十二枚，擘）
上五味，以水六升，煮取二升，去渣，分温三服。按∶此即桂枝，去芍药加附子汤，但彼桂枝用三两，附子用
一枚，以治下后脉促胸满之症。此桂枝加一两，附子加二枚以治风湿身疼脉浮涩之症，一方而治病迥殊，方名
亦异，彼编入桂枝汤类，此编入理中汤类，细思之各当其理，分两之不可忽如此，义亦精矣。后人何得以古
方，轻于加减也。
白术（四两） 甘草（二两） 附子（三枚，炮去皮，破） 生姜（三两，切） 大枣（十二枚，擘） 上五味，
以水六升，煮取二升，去渣，分温三服，初一服，其人身如痹，半日许，复服之，三服都尽，其人如冒状，勿怪，
此以附子、术并走皮内，逐水气，附术并力，则逐水之功愈大。未得除，故使之耳，法当加桂四两。
此即前桂枝附子汤。此本一方二法，以大便硬，小便自利，去桂也。以大便不硬，小便不利，当加桂，观
此条知桂枝能通小便，故五苓散用之。附子三枚恐多也，虚弱家及产妇，宜减服之。附子能劫阴气。
伤寒八、九日，风湿相搏，身体疼烦，不能自转侧，湿则身重。不呕不渴，湿而兼寒。脉浮虚而涩
者，内外之阳俱虚。桂枝附子汤主之。若其人大便硬，小便自利者，去桂加白术汤主之。白术生肠胃之津液。
甘草（二两，蜜炙） 白术（二两） 桂枝（四两，去皮） 附子（二枚，炮制后去皮，掰开） 以上四味药，用水六升，煎煮至剩余三升，滤去药渣，每次温服一升，每日服用三次。初次服药后若出现微微出汗，则病邪可解。此时应接着服用桂枝汤（调和营卫的方剂）。《伤寒论》中所说：治疗风湿病发汗时，如果汗出过多，只是风邪去了，湿邪仍在，所以病不能愈。治疗风湿病应当发汗，但只需让患者微微似有出汗的样子，这样风邪和湿邪才能一同去除。如果进食后出汗并再次感到烦闷，说明还有余邪郁结未清。如果担心一升剂量过大，可以从服用五合开始；若觉得一升太多，可从服用六、七合开始。这是关于初次服药的注意事项。
风湿之邪相互搏结，导致骨节疼痛剧烈，牵掣作痛，无法屈伸活动，触碰时疼痛加剧，伴有出汗、气短，小便不通利，怕风而不愿脱衣，或者身体轻微浮肿者，以甘草附子汤为主治方剂。这一段描述了风湿病的症状，病情大致完备。
桂枝（四两，去皮） 附子（三枚，炮制后去皮，切成八片） 甘草（二两，蜜炙） 生姜（三两，切片） 大枣（十二枚，掰开） 以上五味药，用水六升，煎煮至剩余二升，滤去药渣，分三次温服。按语：此方即是桂枝去芍药加附子汤，只不过彼方中桂枝用三两，附子用一枚，用于治疗误下后脉促、胸满的症状。此方桂枝增加了一两，附子增加了二枚，用于治疗风湿引起的身体疼痛、脉浮涩的症状。同一个方名却治疗截然不同的病症，方名也不同，前者编入桂枝汤类，后者编入理中汤类，仔细思考各自都有其道理，剂量的增减不可轻视，义理也非常精深。后人怎能轻易对古方进行加减呢？
白术（四两） 甘草（二两） 附子（三枚，炮制后去皮，掰开） 生姜（三两，切片） 大枣（十二枚，掰开） 以上五味药，用水六升，煎煮至剩余二升，滤去药渣，分三次温服。第一次服药后，患者身体感觉麻木不仁，约半日后，再行服用，三次服完，患者出现头昏沉如蒙状，不要惊慌，这是因为附子和白术共同作用于皮内，驱逐水湿之气，附子与白术合力，则逐水的作用更大。因水湿尚未完全去除，所以会出现这种情况。按照法度应当加入桂枝四两。
这也就是前面的桂枝附子汤。这原本是一个方子两种用法，因为大便干硬、小便自利，所以去掉桂枝。因为大便不干硬、小便不利，应当加入桂枝。观察这一条可知桂枝能通利小便，所以五苓散中也使用它。附子三枚恐怕剂量偏大，对于体虚之人及产妇，应当减少服用剂量。附子容易耗伤阴气。
伤寒病经过八、九天，风湿之邪相互搏结，身体疼痛烦扰，不能自行翻身转动，湿邪导致身体沉重。没有呕吐、没有口渴，是湿邪兼夹寒邪。脉象浮虚而涩，表示体内外的阳气都虚弱。以桂枝附子汤为主治方剂。如果此人大便干硬，小便自利，则以去桂加白术汤为主治方剂。白术能滋生肠胃的津液。
Gancao (Licorice Root, two liang, honey-fried) Baizhu (Atractylodis Macrocephalae Rhizoma, two liang) Guizhi (Cinnamon Twig, four liang, bark removed) Fuzi (Prepared Aconite Lateralis Radix, two pieces, processed, bark removed, broken). The above four ingredients are boiled in six sheng of water until reduced to three sheng. The dregs are removed, and one sheng is taken warm, three times a day. After the initial dose, if slight sweating occurs, the condition resolves. At this point, Guizhi Tang (Cinnamon Twig Decoction) should be administered. As stated in the *Treatise on Cold Pathogenic Diseases*: When inducing sweating for wind-dampness, if sweat pours out profusely, only the wind pathogen is expelled while the dampness remains, thus the disease does not heal. To treat wind-dampness, sweating should be induced, but only to the extent that the patient appears slightly sweaty; only then will both wind and dampness pathogens be eliminated. If sweating occurs after eating and irritability returns, it indicates that residual pathogens remain郁 (stagnant) and unexhausted. If one sheng is considered too much, start with five he; if one sheng is still too much, start with six or seven he. This refers to the precautions for the initial dose.
When wind-dampness pathogens contend with each other, causing severe joint pain and distress, pulling pain preventing flexion and extension, exacerbation upon touch, accompanied by sweating, shortness of breath, difficulty in urination, aversion to wind with reluctance to remove clothing, or slight bodily swelling, Gancao Fuzi Tang (Licorice and Prepared Aconite Decoction) is the primary formula. This section describes the manifestations of wind-dampness, presenting a comprehensive picture of the condition.
Guizhi (Cinnamon Twig, four liang, bark removed) Fuzi (Prepared Aconite Lateralis Radix, three pieces, processed, bark removed, cut into eight slices) Gancao (Licorice Root, two liang, honey-fried) Shengjiang (Fresh Ginger Rhizome, three liang, sliced) Dazao (Jujube Fruit, twelve pieces, torn open). The above five ingredients are boiled in six sheng of water until reduced to two sheng. The dregs are removed, and the decoction is divided into three warm doses. Note: This formula is essentially Guizhi Qu Shaoyao Jia Fuzi Tang (Cinnamon Twig Decoction without Paeonia with Added Prepared Aconite), except that in that formula, Guizhi is used in an amount of three liang and Fuzi in one piece, treating symptoms of rapid pulse and chest fullness following erroneous purgation. In this formula, Guizhi is increased by one liang and Fuzi by two pieces to treat body pain and floating, choppy pulse caused by wind-dampness. Although sharing a similar lineage, they treat vastly different conditions and have distinct names; the former is classified under Guizhi Tang categories, while the latter is classified under Lizhong Tang categories. Upon careful consideration, each has its own rationale. The importance of dosage cannot be overlooked, and the principles are profound. How can later generations lightly modify ancient formulas?
Baizhu (Atractylodis Macrocephalae Rhizoma, four liang) Gancao (Licorice Root, two liang, honey-fried) Fuzi (Prepared Aconite Lateralis Radix, three pieces, processed, bark removed, broken) Shengjiang (Fresh Ginger Rhizome, three liang, sliced) Dazao (Jujube Fruit, twelve pieces, torn open). The above five ingredients are boiled in six sheng of water until reduced to two sheng. The dregs are removed, and the decoction is divided into three warm doses. After the first dose, the patient may experience numbness. After about half a day, administer the next dose. After all three doses are consumed, the patient may feel dizzy as if covered by something; do not be alarmed. This is because Fuzi and Baizhu act together within the skin layers to drive out water-dampness qi. With their combined force, the effect of expelling water is greater. Since the water-dampness has not yet been fully eliminated, this reaction occurs. According to the method, Guizhi (Cinnamon Twig) should be added in an amount of four liang.
This is the same as the previously mentioned Guizhi Fuzi Tang. Originally, this was one formula with two methods. Because the stool was hard and urination was normal, Guizhi was removed. Because the stool was not hard and urination was difficult, Guizhi should be added. Observing this clause reveals that Guizhi can promote urination, which is why it is used in Wuling San (Five-Ingredient Powder with Poria). Three pieces of Fuzi might be excessive; for frail individuals and postpartum women, the dosage should be reduced. Fuzi can deplete yin qi.
After eight or nine days of Shanghan (Cold Damage), wind-dampness pathogens contend with each other, causing body pain and distress, inability to turn over independently, and heaviness due to dampness. There is no vomiting or thirst, indicating dampness combined with cold. The pulse is floating, deficient, and choppy, indicating deficiency of yang qi both internally and externally. Guizhi Fuzi Tang (Cinnamon Twig and Prepared Aconite Decoction) is the primary formula. If the person has hard stool and normal urination, Qu Gui Jia Baizhu Tang (Remove Cinnamon Twig and Add Atractylodes Macrocephala Decoction) is the primary formula. Baizhu generates fluids in the stomach and intestines.