治少阴病一二日。口中和。其背恶寒者。当灸之。宜此方主之。又少阴病身体痛。
手足寒。骨节痛。脉沉者。宜此方主之。
附子（二枚 生用。） 茯苓（三两） 人参（二两） 白术（四两） 芍药（三两）
上五味。以水八升。煮取三升。去滓。温服一升。日三服。
歌曰 生附二枚附子汤。术宜四两主斯方。芍苓三两人参二。背冷脉沉身痛详。
蔚按。论云。少阴病得之一二日。口中和。其背恶寒者。当灸之。宜此汤。此治太阳之
阳虚
此治少阴君火内虚神机不转也。方中君以生附子二枚。益下焦水中之生阳以达于上焦之君火
也。臣以白术者。以心肾藉中土之气而交合也。佐以人参者。取其甘润以济生附之大辛。又
佐以芍药者。取其苦降以泄生附之大毒也。然参、芍皆阴分之药。虽能化生附之暴。又恐其
掣生附
芍成功之后从小便而退于无用之地。不遗余阴之气以妨阳药也。师用此方。一以治阳虚。一
以治阴虚。时医开口辄言此四字。其亦知阳指太阳。阴指少阴。一方统治之理乎。
治少阴病下利。便脓血者。此汤主之。又少阴病二三日。腹痛。小便不利。下利不
便脓血者主之。
赤石脂（一斤 一半全用。一半筛末。） 干姜（一两） 粳米（一升）
上三味。以水七升。煮米令熟。去滓。内石脂末方寸匕。温服七合。日三服。若一服愈。
余
歌曰 一升粳米一斤脂。脂半磨研法亦奇。一两干姜同煮服。少阴脓血是良规。
张令韶曰。少阴病下利脓血。桃花汤主之。此感少阴君火之热。不病无形之气化。而病
有形
干
便不利。下利不止。便脓血者。桃花汤主之。此言二三日至四五日。值太阴主气之期而脾络
不通。则为腹痛。脾络不通不能转输。则为小便不利。小便不利则水谷不分而为利不止。阴
络伤则为脓血。石脂为山之血脉凝结而成。故治经脉之病。下节言便脓血可刺者。所以申明
病在经脉之义也。
治疗少阴病发病一两天，口中感觉平和不苦不燥，背部怕冷的，应当施以艾灸，适宜用此方主治。又治少阴病身体疼痛，手足寒冷，骨节疼痛，脉象沉的，适宜用此方主治。
附子（二枚，生用） 茯苓（三两） 人参（二两） 白术（四两） 芍药（三两）
以上五味药，用水八升，煮取三升药液，滤去药渣，每次温服一升，每日服用三次。
歌诀说：生附子二枚组成附子汤，白术宜用四两作为此方的主药。芍药、茯苓各三两，人参二两，背冷、脉沉、身体疼痛的症状要详细辨别。
蔚按（陈念祖自注）：《伤寒论》中说，少阴病得之一两天，口中平和，背部怕冷的，应当艾灸，适宜用此汤。这是治疗太阳经阳虚（此处指表阳不足或误写，原文意指对比太阳病之阳虚与少阴病之阳虚，但后文明确指出此方治少阴君火内虚）。这是治疗少阴君火内部虚弱，神机运转停滞。方中以生附子二枚为君药，补益下焦水中之生发之阳气，使其通达于上焦的君火。以白术为臣药，因为心肾依赖中土脾胃之气才能交通结合。以人参为佐药，取其甘润之性来调和生附子的极度辛热。又以芍药为佐药，取其苦降之性以泄除生附子的剧毒。然而人参、芍药都是阴分的药物，虽然能化解生附子的暴烈之性，但又担心它们牵制生附子的功效。在生附子发挥药效之后，这些阴分药物会随小便排出到无用的地方，不留残余的阴气来妨碍阳药的作用。张仲景使用此方，一方面治疗阳虚，一方面治疗阴虚（此处指阴阳互根互用之理，或指针对不同层面的虚损），当时的医生开口闭口就说这两个字，他们难道知道“阳”指太阳，“阴”指少阴，以及一方统摄治疗的道理吗？
治疗少阴病腹泻，大便带有脓血的，用此汤主治。又治少阴病两三天，腹痛，小便不利，腹泻但不带脓血的，也用此汤主治。
赤石脂（一斤，一半整块使用，一半研成细末） 干姜（一两） 粳米（一升）
以上三味药，用水七升，煮米至熟烂，滤去药渣，加入赤石脂细末一方寸匕，温服七合，每日服用三次。如果一次服药后痊愈，剩下的药不必再服。
歌诀说：一升粳米配一斤赤石脂，一半赤石脂磨研的方法也很奇妙。一两干姜一同煮服，是治疗少阴病便脓血的良好准则。
张令韶（张隐庵）说：少阴病下利脓血，用桃花汤主治。这是感受了少阴君火的邪热，没有影响到无形的气化功能，而是影响了有形的脏腑经络。导致小便不利，腹泻不止，大便带脓血。这里说的是从第二三天到第四五天，正值太阴湿土主气的时期，脾络不通畅，就会腹痛；脾络不通畅不能转输津液，就会导致小便不利；小便不利则水谷不分而腹泻不止；阴络受伤就会形成脓血。赤石脂是山体的血脉凝结而成，所以能治疗经脉的疾病。下节提到便脓血可以针刺的情况，是为了申明病在经脉的意义。
To treat Shaoyin disease (Shaoyin Syndrome) occurring within one or two days, where the mouth feels neutral (no bitter taste or dryness), and there is aversion to cold in the back, moxibustion should be applied, and this formula is indicated. It is also indicated for Shaoyin disease presenting with body pain, cold hands and feet, joint pain, and a deep pulse.
Fuzi (Aconiti Lateralis Radix Praeparata, raw, 2 pieces) Fuling (Poria, 3 liang) Renshen (Ginseng Radix, 2 liang) Baizhu (Atractylodis Macrocephalae Rhizoma, 4 liang) Shaoyao (Paeoniae Radix Alba, 3 liang)
Take these five herbs, add eight sheng of water, decoct to obtain three sheng of liquid, strain off the dregs, and take one sheng warm, three times daily.
Song says: Two pieces of raw Fuzi constitute the Fuzi Tang; Baizhu at four liang is the main herb of this formula. Shaoyao and Fuling are three liang each, Renshen is two liang; carefully distinguish symptoms such as cold back, deep pulse, and body pain.
Wei An (Chen Nianzu's commentary): The Treatise states that for Shaoyin disease acquired in one or two days, if the mouth is neutral and there is aversion to cold in the back, moxibustion should be used, and this decoction is suitable. This treats the deficiency of Yang in the Taiyang channel (Note: The text contrasts this with Shaoyin, but explicitly links it to Shaoyin Jun Fire deficiency below). This treats the internal deficiency of Shaoyin Jun Fire, where the spiritual mechanism fails to rotate. In the formula, raw Fuzi (2 pieces) serves as the sovereign drug, benefiting the generating Yang within the Water of the Lower Jiao to reach the Jun Fire of the Upper Jiao. Baizhu serves as the minister drug, because the Heart and Kidney rely on the Qi of the Middle Earth (Spleen/Stomach) to interact and combine. Renshen serves as an assistant drug, utilizing its sweet and moist nature to moderate the extreme acridity of raw Fuzi. Shaoyao also serves as an assistant drug, utilizing its bitter and descending nature to drain the severe toxicity of raw Fuzi. However, both Renshen and Shaoyao are Yin-natured drugs; although they can resolve the violent nature of Fuzi, they might restrain its efficacy. After Fuzi exerts its effect, these Yin drugs will exit through urination to a place of no use, leaving no residual Yin Qi to hinder the Yang drugs. Master Zhang Zhongjing uses this formula to treat Yang deficiency in one aspect, and Yin deficiency in another. Contemporary physicians speak of these two terms casually; do they understand that "Yang" refers to Taiyang, "Yin" refers to Shaoyin, and the principle of one formula governing treatment?
To treat Shaoyin disease with diarrhea accompanied by pus and blood in the stool, this decoction is indicated. It is also indicated for Shaoyin disease lasting two or three days, presenting with abdominal pain, difficulty in urination, and diarrhea without pus and blood.
Chishizhi (Halloysitum Rubrum, 1 jin; half used whole, half sifted into powder) Ganjiang (Zingiberis Rhizoma, 1 liang) Jingmi (Oryza Sativa, 1 sheng)
Take these three ingredients, add seven sheng of water, boil until the rice is cooked, strain off the dregs, add one cun bi of Chishizhi powder, and take seven ge warm, three times daily. If cured after one dose, do not take the remainder.
Song says: One sheng of Jingmi and one jin of Chishizhi; the method of grinding half the Chishizhi is also unique. Boil with one liang of Ganjiang and take; this is the good standard for treating Shaoyin pus and blood.
Zhanglingshao (Zhang Yinzhan) said: For Shaoyin disease with diarrhea and pus/blood, Taohua Tang is indicated. This is due to contracting the heat of Shaoyin Jun Fire, which does not affect the formless Qi transformation, but affects the有形 (form/structure). This leads to difficulty in urination, continuous diarrhea, and stools containing pus and blood. This refers to the period from the second or third day to the fourth or fifth day, when the Qi of Taiyin Spleen is dominant. If the Spleen collaterals are blocked, abdominal pain occurs; if the Spleen collaterals cannot transport, urination becomes difficult; if urination is difficult, water and grain are not separated, leading to continuous diarrhea; injury to the Yin collaterals results in pus and blood. Chishizhi is formed from the congealed blood vessels of the mountain, thus it treats diseases of the meridians. The following section mentions that pus and blood in stools can be treated with acupuncture, to clarify the meaning that the disease lies in the meridians.