治太阳病下之后，脉促胸满而微恶寒者。
桂枝汤去芍药，加附子一枚（炮）。
桂枝去芍汤和阳，误下中焦阳气伤。（芍药专益阴气，桂枝汤去芍药者，误下阳虚，浊
阴必僭于中焦，故去芍药之酸寒，存一片阳和甘缓之性，得以载还中焦阳气，成清化之功。）
胸满脉促邪犹在，（中虚而表邪仍在，故仍用桂枝。）微恶寒加附子良（名桂枝去芍药加附子
汤微恶寒则阳亦虚矣，故加附子，以杜亡阳之机。）
治太阳病身体强KT KT 然，脉反沉迟，此为痉也，宜此主之。
桂枝汤原方加栝蒌根二两。（喻嘉言谓“栝蒌为君，分两当重，桂枝为臣，分两当减”，
其意颇通。）栝蒌桂枝汤治痉，桂枝汤内栝蒌进。太阳证备项背强，脉反沉迟痉将振。太阳
之脉本浮，今脉沉迟，故曰“反”。沉迟非内寒，乃营卫之行不利，津液少而经脉滞，（故知
将欲作痉也。）痉为风病亦津伤，（古称“痉”为“风强病”，然风行必燥，津液必伤。）风自
宜驱津必润。（桂枝汤和营卫以驱风，栝蒌根濡津液而治痉。按∶伤寒项背强KT KT ，
汗出恶风者，用桂枝加葛根汤，其脉必浮数，为邪风盛于外也；此身强KT KT 然，脉反
沉迟，为风淫于外，而津伤于内，故用桂枝则同，而一加葛根以散表，一加栝蒌根以滋内，
则不同也。）
治发汗过多，其人叉手自冒心，心下悸，欲得按者。
桂枝（四两去皮） 甘草（二两炙） 水三升，煮取一升，顿服。
桂枝甘草（汤）补心阳，止汗除烦功独良。（此方采取桂枝之半，便另有精义。桂枝复
甘草，是辛从甘化，为阳中有阴，故治胸中阳气欲失；且桂枝轻扬走表，佐以甘草，留恋中
宫，载还阳气，仍寓一表一里，故得外止汗而内除烦。）发汗过多心下悸，悸而欲按是阳亡。
（发汗不误，误在过多。汗为心之液，多则心气虚，故悸而欲按，此乃阳虚之轻者；甚而振
振欲擗地，则当用真武汤矣。）
To treat Taiyang disease (Disease of the Taiyang/Bladder Channel) after inappropriate purgation, presenting with a rapid pulse and chest fullness.
Use the original Guizhi Tang (Cinnamon Twig Decoction), removing Shaoyao (Paeonia Root).
To treat Taiyang disease after inappropriate purgation, presenting with a rapid pulse, chest fullness, and slight aversion to cold.
Use Guizhi Tang (Cinnamon Twig Decoction) removing Shaoyao (Paeonia Root), adding one prepared Fuzi (Prepared Aconite Lateral Root).
Guizhi Qushaoyao Tang (Decoction of Cinnamon Twig without Paeonia) harmonizes Yang Qi; inappropriate purgation damages the Yang Qi of the Middle Jiao (Middle Burner). (Shaoyao (Paeonia Root) specifically nourishes Yin Qi. The reason for removing Shaoyao from Guizhi Tang is that when purgation causes Yang deficiency, turbid Yin pathogens inevitably rebel in the Middle Jiao. Therefore, removing the sour-cold nature of Shaoyao preserves its sweet-warm and gentle properties, allowing it to carry and restore the Yang Qi of the Middle Jiao, achieving the effect of clear transformation.)
Chest fullness and a rapid pulse indicate the pathogen remains on the exterior, (because the interior is deficient while the exterior pathogen persists, Guizhi (Cinnamon Twig) is still used.) Slight aversion to cold is well treated by adding Fuzi (Aconite). (Named Guizhi Qushaoyao Jia Fuzi Tang (Decoction of Cinnamon Twig without Paeonia plus Aconite); slight aversion to cold indicates Yang is also deficient, so Fuzi is added to prevent the crisis of Yang collapse.)
To treat Taiyang disease where the body is stiff and rigid, and the pulse is surprisingly deep and slow; this is Jing Disease (Spasm Disease, characterized by stiffness and spasms). This formula should be used as the main treatment.
Add two liang of Gualou Gen (Trichosanthes Root) to the original Guizhi Tang (Cinnamon Twig Decoction). (Yu Jiayan stated that "Gualou should be the sovereign herb with a heavier dosage, and Guizhi the minister herb with a reduced dosage," which is a reasonable interpretation.) Gualou Guizhi Tang treats Spasm Disease; Gualou is added to Guizhi Tang. When Taiyang symptoms are complete with stiffness in the neck and back, and the pulse is surprisingly deep and slow, Spasm Disease is about to manifest. The pulse of Taiyang should originally be floating; now that it is deep and slow, it is called "surprisingly" (fan). Deep and slow does not indicate internal cold, but rather unfavorable circulation of Ying and Wei (Nutritive and Defensive Qi), insufficient Jin-Ye (Body Fluids), and stagnation of the meridians, (thus knowing that Spasm Disease will occur.) Spasm is a Wind disease also caused by injury to Body Fluids, (anciently called "Wind-Stiffness Disease"; however, Wind movement leads to dryness, inevitably injuring Body Fluids.) Wind should be expelled, and Body Fluids must be moistened. (Guizhi Tang harmonizes Ying and Wei to expel Wind, while Gualou Gen (Trichosanthes Root) moistens Body Fluids to treat Spasm. Note: In Shanghan (Cold Damage) cases with stiffness in the neck and back, sweating, and aversion to wind, Guizhi Jia Gegen Tang (Cinnamon Twig Decoction plus Kudzuvine Root) is used, where the pulse is necessarily floating and rapid, indicating strong Wind-Pathogen on the exterior; here, the body is stiff with a surprisingly deep and slow pulse, indicating Wind excess on the exterior and injury to Body Fluids internally. Thus, although both use Guizhi, one adds Gegen (Kudzuvine Root) to disperse the exterior, while the other adds Gualou Gen (Trichosanthes Root) to nourish the interior, making them different.)
To treat cases of excessive sweating, where the patient crosses their hands over the heart region, experiences palpitations in the epigastrium, and desires pressure.
Guizhi (Cinnamon Twig) (4 liang, bark removed) Gancao (Licorice Root) (2 liang, honey-fried). Use three sheng of water, boil to obtain one sheng, take all at once.
Guizhi Gancao Tang (Decoction of Cinnamon Twig and Licorice) tonifies Heart Yang; its efficacy in stopping sweating and relieving irritability is uniquely excellent. (This formula uses only half the dosage of Guizhi, revealing profound meaning. Guizhi combined with Gancao transforms the pungent flavor into sweetness, creating Yang containing Yin, thus treating the loss of Yang Qi in the chest; furthermore, Guizhi is light and ascending moving to the exterior, assisted by Gancao which lingers in the Middle Palace (Spleen/Stomach) to carry and restore Yang Qi, embodying a relationship between exterior and interior, thereby stopping sweating externally and relieving irritability internally.) Excessive sweating leads to epigastric palpitations; palpitations with desire for pressure indicate Yang collapse. (Sweating itself is not wrong; the error lies in excess. Sweat is the fluid of the Heart; excessive sweating depletes Heart Qi, causing palpitations and a desire for pressure, which represents mild Yang deficiency; if severe enough to cause trembling and a desire to fall to the ground, Zhenwu Tang (True Warrior Decoction) should be used.)