治命门火衰, 不能生土, 以致脾胃虚寒, 饮食少思
,大便不实, 或下元衰惫, 脐腹疼痛, 夜多漩溺等证.
熟地黄 ( 九蒸为度, 捣膏 ) 八两 干山药四两 山萸肉四丙 白茯
苓 丹皮 泽泻各三两 肉桂附子各一两, , 右八味为末, 炼蜜丸如
桐子大, 酒下十五丸, 日再服.
【集注】赵献可曰: 君子观象于坎, 而知肾中具水火之用. 今人入房
而阳易举者, 阴虚火动也; 阳事先痿者, 命门火衰也. 真水竭则隆冬
不寒, 真火熄则盛夏不热. 是方也, 熟地, 山药, 泽泻, 丹皮, 茯苓
,山萸皆濡润之品, 所以能壮水之主; 肉桂, 附子辛润之物, 能于水
中补火, 所以能益火之原. 水火得其养, 则肾气复矣. 喻昌曰: 『金
匮』用八味丸, 治脚气上入少腹不仁者. 脚气即阴气, 少腹不仁即攻
心之渐, 故用之以驱逐阴邪也. 其能虚劳腰痛, 少腹拘急, 小便不利
,则因过劳其肾, 阴气逆于少腹, 阻遏膀胱之气化, 小便不通利, 故
用之温养下焦, 以收肾气也. 其短气有微饮者; 饮, 亦阴类, 阻其胸
中之阳, 自致短气, 故用之引饮下出, 以安胸中也. 消渴病, 饮水一
斗,小便亦一斗, 此肾气不能摄水, 小便恣出, 源泉有立竭之势, 故
急用以逆折其水也. 夫肾水下趋之消证, 肾气不上升之渴证, 非用是
以蛰护封藏, 蒸动水气, 舍此曷从治哉! 后人谓八味丸为治消渴之圣
药,得其旨矣. 柯琴曰: 命门之火, 乃水中之阳. 夫水体本静, 而川
流不息者, 气之动, 火之用也, 非指有形者言也. 然火少则生气, 火
壮则食气, 故火不可亢, 亦不可衰. 所云火生土者, 即肾家之少火游
行其间, 以息相吹耳. 若命门火衰, 少火几于熄矣. 欲暖脾胃之阳,
必先温命门之火, 此肾气丸纳桂, 附于滋阴剂中十倍之一, 意不在补
火,而在微微生火, 即生肾气也. 故不曰温肾, 而名肾气, 斯知肾以
气为主, 肾得气而土自生也. 且形不足者, 温之以气, 则脾胃因虚寒
而致病者固痊, 即虚火不归其原者, 亦纳之而归封蛰之本矣. 崔氏加
减八味丸, 以五味之酸收, 易附子之辛热, 肾虚而不寒者宜之也. 『
千金方』于八味外, 更加元参之咸寒, 以助熟地而滋肾; 加芍药之酸
寒,助丹皮以滋肝. 总之为桂附加锁钥耳. 以之壮水则有余, 以之益
火恐不足也. 『济生方』加牛膝, 车前以治水肿, 倍茯苓以辅地黄,
山药, 茱萸, 与泽, 丹, 车, 牛等列, 随证加减, 允为得法. 益阴肾
气丸于六味外加当归, 五味, 柴胡, 以治目暗不见, 化裁愈妙矣.
治疗命门火衰(肾阳不足,无法温煦脾土),导致脾胃虚寒,食欲减退,大便稀溏不成形;或者下元衰惫(肾气极度虚弱),出现脐腹部疼痛,夜间多尿等症状。
熟地黄(经过九次蒸制至标准程度,捣碎成膏)八两,干山药四两,山茱萸肉四两,白茯苓三两,牡丹皮三两,泽泻三两,肉桂一两,附子一两。以上八味药研成细末,用炼蜜制成如梧桐子大小的丸剂,每次服用十五丸,用酒送服,每日服用两次。
【集注】赵献可说:君子观察坎卦的象意,从而知道肾中兼具水与火的功能。现在人们房事后阳气容易勃起,这是阴虚火动;如果房事前就阳痿不举,这是命门火衰。真阴枯竭,隆冬时节也不觉得寒冷;真阳熄灭,盛夏时节也不觉得炎热。这个方子中,熟地黄、山药、泽泻、牡丹皮、茯苓、山茱萸都是滋润濡润的药物,用来壮旺“水之主”(肾阴);肉桂、附子是辛润的药物,能够在水中补益“火”,用来益助“火之原”(肾阳)。水火得到滋养,肾气就能恢复。
喻昌说:《金匮要略》使用八味丸,治疗脚气病邪气上冲至小腹导致麻木不仁的情况。脚气即阴邪之气,小腹麻木不仁是邪气攻心的前兆,所以用此方驱逐阴邪。该方能治疗虚劳腰痛、小腹拘急、小便不利,这是因为过度劳累损伤了肾脏,阴气逆乱于小腹,阻碍了膀胱的气化功能,导致小便不通利,所以用此方温养下焦,以收敛肾气。对于短气且伴有轻微饮邪的患者,饮邪也属于阴类,阻遏胸中的阳气,自然导致短气,所以用此方引导饮邪向下排出,以安定胸中。消渴病患者,喝水一斗,小便也排出一斗,这是肾气不能摄纳水分,小便肆意流出,水源有立刻枯竭的危险,所以急需使用此方来遏制这种水势。凡是肾水下趋导致的消证,肾气不能上升导致的渴证,如果不使用此方来进行潜藏保护、封藏固摄,并蒸腾激发水气,除了这个方法还能从哪里治疗呢!后人称八味丸为治疗消渴病的圣药,是得其精髓了。
柯琴说:命门的火,是水中之阳。水的本体本是静止的,但像河流一样川流不息,这是气的运动,是火的作用,不是指有形的物质而言。然而,火少则能生气,火壮则会食气,所以火不可亢盛,也不可衰弱。所说的“火生土”,就是肾家中的少火(生理之火)在中间游行,像气息相吹一样发挥作用。如果命门火衰,少火几乎要熄灭了。想要温暖脾胃的阳气,必须先温补命门的火。这个肾气丸将肉桂、附子纳入滋阴剂中,比例仅为十分之一,用意不在于大补火,而在于微微生火,即产生肾气。所以不叫温肾丸,而命名为肾气丸,由此可知肾以气为主,肾得到气,脾土自然生化。而且形体不足的,用气来温补,那么因脾胃虚寒致病的人固然痊愈,即使是虚火不归其本源的人,也能将其收纳并回归到封藏的根本之处。崔氏加减八味丸,用五味子的酸收,替换附子的辛热,适用于肾虚但不寒的情况。《千金方》在八味丸之外,更加入玄参的咸寒,以辅助熟地黄滋补肾阴;加入芍药的酸寒,辅助牡丹皮滋养肝阴。总的来说,这就像是给桂枝和附子加上了锁钥。用它来壮水则有余,用它来益火恐怕不足。《济生方》加入牛膝、车前子来治疗水肿,加倍茯苓用量以辅助地黄、山药、山茱萸,与泽泻、牡丹皮、车前子、牛膝等并列,随证加减,确实符合法度。益阴肾气丸在六味地黄丸基础上加入当归、五味子、柴胡,用来治疗眼睛昏暗看不见,变化裁减得更加精妙了。
Treats conditions of Mingmen Fire Decline (deficiency of Kidney Yang failing to warm the Spleen Earth), resulting in Spleen-Stomach Deficiency-Cold, reduced appetite, and loose stools; or exhaustion of the Lower Yuan (extreme weakness of Kidney Qi), manifesting as pain around the umbilicus and abdomen, and frequent nocturia.
Shu Di Huang (Rehmanniae Radix Praeparata, steamed nine times until standard, mashed into paste) 8 liang, Gan Shan Yao (Dioscoreae Rhizoma) 4 liang, Shan Yu Rou (Corni Fructus) 4 liang, Bai Fu Ling (Poria) 3 liang, Dan Pi (Moutan Cortex) 3 liang, Ze Xie (Alismatis Rhizoma) 3 liang, Rou Gui (Cinnamomi Cortex) 1 liang, Fu Zi (Aconiti Lateralis Radix Praeparata) 1 liang. The above eight herbs are ground into powder, mixed with refined honey to form pills the size of tung tree seeds. Take 15 pills per dose, administered with wine, twice daily.
[Collected Annotations] Zhao Xianke stated: By observing the image of Kan (☵), one understands that the Kidney contains both Water and Fire functions. In contemporary cases, if yang rises easily after intercourse, it indicates Yin Deficiency with Fire Hyperactivity; if impotence occurs before intercourse, it indicates Mingmen Fire Decline. When True Water is exhausted, there is no cold even in mid-winter; when True Fire is extinguished, there is no heat even in mid-summer. In this formula, Shu Di Huang, Shan Yao, Ze Xie, Dan Pi, Fu Ling, and Shan Yu Rou are moistening and nourishing substances, used to strengthen the "Master of Water" (Kidney Yin); Rou Gui and Fu Zi are pungent and moistening substances, capable of supplementing Fire within Water, thus benefiting the "Origin of Fire" (Kidney Yang). When Water and Fire are nourished, Kidney Qi recovers.
Yu Chang stated: *Jin Gui Yao Lue* uses Ba Wei Wan to treat Jiao Qi (Gouty Arthritis/Paralysis) where pathogenic qi ascends into the lower abdomen causing numbness. Jiao Qi refers to Yin pathogenic qi; numbness in the lower abdomen is a precursor to the pathogen attacking the Heart, hence this formula is used to expel Yin pathogens. Its ability to treat deficiency fatigue with lumbar pain, lower abdominal tension, and dysuria arises because overexertion damages the Kidneys, causing Yin qi to rebel in the lower abdomen, obstructing the Qi transformation of the Bladder, leading to difficult urination. Thus, it is used to warm and nourish the Lower Jiao to consolidate Kidney Qi. For patients with shortness of breath accompanied by slight fluid retention, since fluids belong to the Yin category and obstruct Yang Qi in the chest, causing shortness of breath, this formula is used to guide fluids downward for excretion, thereby calming the Chest Middle. In Xiao Ke (Wasting-Thirst) disease, where drinking one dou results in urinating one dou, the Kidney Qi fails to control water, leading to excessive urination and a risk of source depletion; thus, urgent use of this formula is required to counteract this water flow. For Xiao patterns caused by Kidney Water sinking downward, and Ke patterns caused by failure of Kidney Qi to ascend, without using this method to store, protect, seal, and preserve, while steaming and activating Water Qi, from where else could treatment be sought! Later generations calling Ba Wei Wan the sacred medicine for treating Xiao Ke have grasped its essence.
Ke Qin stated: The Fire of Mingmen is the Yang within Water. The nature of Water is originally still, but its continuous flow like a river is due to the movement of Qi and the function of Fire, not referring to有形 (material forms). However, little Fire generates Qi, while excessive Fire consumes Qi; therefore, Fire must not be hyperactive nor deficient. What is meant by "Fire generates Earth" is the Little Fire (Physiological Fire) of the Kidney circulating within, blowing like breath. If Mingmen Fire declines, Little Fire is nearly extinguished. To warm the Yang of the Spleen and Stomach, one must first warm the Fire of Mingmen. This Shen Qi Pill incorporates Rou Gui and Fu Zi into Yin-nourishing agents at a ratio of one-tenth; the intent is not to strongly tonify Fire, but to gently generate Fire, which is essentially generating Kidney Qi. Hence, it is named Shen Qi (Kidney Qi) rather than Wen Shen (Warming Kidney), indicating that the Kidney prioritizes Qi; once the Kidney obtains Qi, Earth naturally generates. Furthermore, for those with insufficient form, warming with Qi cures diseases caused by Spleen-Stomach Deficiency-Cold; even for those with defunct Fire not returning to its origin, it guides them back to the root of storage and preservation. Cui Shi's Modified Ba Wei Wan replaces the pungent-hot Fu Zi with the sour-astringent Wu Wei Zi, suitable for Kidney Deficiency without Cold. *Qian Jin Fang* adds Xuan Shen (Scrophulariae Radix) salty-cold to assist Shu Di Huang in nourishing Kidney Yin, and Shao Yao (Paeoniae Radix Alba) sour-cold to assist Dan Pi in nourishing Liver Yin. Essentially, these act as locks and keys for Gui Zhi and Fu Zi. Using them to strengthen Water is excessive; using them to benefit Fire might be insufficient. *Ji Sheng Fang* adds Niu Xi (Achyranthis Bidentatae Radix) and Che Qian Zi (Plantaginis Semen) to treat Edema, doubles the dosage of Fu Ling to assist Di Huang, Shan Yao, and Zhu Yu, placing them on equal footing with Ze Xie, Dan Pi, Che Qian, and Niu Xi, adjusting according to symptoms, which is indeed appropriate. Yi Yin Shen Qi Pill adds Dang Gui (Angelicae Sinensis Radix), Wu Wei Zi, and Chai Hu (Bupleuri Radix) to Liu Wei Di Huang Wan to treat dim vision and blindness, making further refinements that are exquisite.