气平,味微苦,微寒。气味俱轻,阳也,升也,纯阳,无毒。
少阳经、厥阴经行
《象》云∶除虚劳寒热,解肌热,去早晨潮热,妇人产前后必用之药。善除本经头痛,
非他药能止。治心下痞,胸膈痛。去芦用。
《心》云∶少阳经分之药,引胃气上升,苦寒以发表热。
《珍》云∶去往来寒热,胆瘅,非此不能除。
《本草》云∶主心腹,去肠胃中结气,饮食积聚,寒热邪气,推陈致新,除伤寒心下烦
热,诸痰热结实,胸中邪气,五脏间游气,大肠停积水胀,及湿痹拘挛。亦可作浴汤。久服
轻身、明目、益精。半夏为之使,恶皂荚,畏女菀、藜芦。入足少阳,主东方分也。在经主
气,在脏主血。证前行则恶
热,却退则恶寒,虽气之微寒,味之薄者,故能行经。若佐以三棱、广术、巴豆之类,故能
消坚积,是主血也。妇人经
水适来适断,伤寒杂病,易老俱用小柴胡汤主之,加以四物之类,并秦艽、牡丹皮辈,同为
调经之剂。
《衍义》云∶柴胡,《本经》并无一字治劳,今人治劳方中鲜有不用者,凡此误世甚多
。尝原病劳,有一种真脏虚损,复受邪热,因虚而致劳,故曰∶劳者,牢也,须当斟酌用之
。如《经验方》治劳热,青蒿煎丸,用柴胡正合宜耳,服之无不效。
《日华子》云∶味甘,补五劳七伤,除烦止惊,益气力。《药性论》亦谓治劳乏羸瘦。
若此等病,苟无实热,医者取而用之,不亡何待。注释本草,一字亦不可忽,盖后世所误无
穷也。苟有明哲之士,自可处制,中下之士,不肯考究,枉致沦没,可不谨哉,可不戒哉。
如张仲景治寒热往来如疟,用柴胡,正合其宜。
《图经》云∶治伤寒有大小柴胡汤、柴胡加龙骨牡蛎、柴胡加芒硝等汤,故后人治伤寒
热,此为最要之药。
东垣云∶能引清气而行阳道,伤寒外诸药所加,有热则加之,无热则不加。又能引胃气
上行,升腾而行春令是也,欲其如此,又何加之。
海藏云∶能去脏腑内外俱乏,既能引清气上行而顺阳道,又入足少阳,
盖以少阳之气,初出地之皮为嫩阳,故以少阳当之。
柴胡,气性平和,味道微苦,性质微寒。其气味都很轻清,属于阳,具有上升的特性,是纯阳之药,没有毒性。
《本草发挥》中李杲(号东垣,此处指代引用者象)说:能消除虚劳引起的寒热往来,解除肌肉层面的热邪,去除早晨出现的潮热,是妇女产前产后必须使用的药物。善于治疗本经(少阳经)的头痛,其他药物无法替代。治疗心下痞满、胸膈疼痛。使用时需去掉芦头。
《珍珠囊》中张元素(号易老,此处指代引用者心)说:它是分治少阳经的药物,能引导胃气上升,利用其苦寒之性发散表热。
《汤液本草》中王好古(此处指代引用者珍,实为本书作者观点或引自珍籍,通常“珍”指张元素《珍珠囊》,但结合上下文及后世注疏,此处多引各家之言,暂按原文译)说:能去除往来寒热、胆腑热盛(胆瘅),不用此药不能消除。
《神农本草经》说:主治心腹部的病症,去除肠胃中郁结的气机,消除饮食积滞,驱散寒热邪气,推陈出新,清除伤寒引起的心下烦热,各种痰热结实,胸中的邪气,五脏间游走不定的气机,大肠停滞的水湿肿胀,以及湿痹引起的筋脉拘挛抽搐。也可以用来煮水洗澡。长期服用可以身体轻盈、明目、补益精气。半夏作为它的辅佐药,害怕皂荚,畏惧女菀、藜芦。它进入足少阳经,主要主管东方木气的疏泄。在经络中主要调节气机,在脏腑中主要调节血分。如果症状向前发展则怕热,向后退缩则怕冷,虽然它气微寒、味淡薄,所以能够通行经络。如果配合三棱、莪术、巴豆等药物,就能消除坚硬的积块,这是因为它主入血分的缘故。妇女月经适来适断,或者伤寒杂病,张元素(易老)都常用小柴胡汤为主方,加上四物汤之类的补血药,以及秦艽、牡丹皮等药,共同作为调经的方剂。
《本草衍义》中寇宗奭说:柴胡,《神农本草经》中并没有一个字提到治疗劳损,现在人治疗劳损的方子里很少有不用的,这种误导世人的情况很多。我曾推究劳损病的病因,有一种是真脏虚损,又感受了邪热,因为虚而导致的劳损,所以说:“劳”字通“牢”,应当仔细斟酌使用。比如《经验方》治疗劳热,青蒿煎丸中使用柴胡正合适,服用后没有无效的。
《日华子本草》说:味道甘甜,补益五劳七伤,消除烦躁止住惊悸,益气力。《药性论》也说治疗劳乏羸瘦。像这类疾病,如果没有实热,医生却拿来使用,不死还等什么?注释本草,每一个字都不能忽视,因为后世被误导的情况无穷无尽。如果有明智的人,自然可以恰当处理;中等及以下水平的医生,不肯考究医理,白白导致病人沦落死亡,怎能不谨慎呢?怎能不警惕呢?比如张仲景治疗寒热往来像疟疾一样的症状,使用柴胡,正符合病情。
《本草图经》说:治疗伤寒有大柴胡汤、柴胡加龙骨牡蛎汤、柴胡加芒硝汤等方剂,所以后人治疗伤寒热症,柴胡是最关键的药物。
李杲(号东垣)说:它能引导清气运行于阳道,治疗伤寒时在其他药物基础上添加,有热就加入,无热就不加。又能引导胃气上行,升腾而施行春生之气,想要达到这样的效果,又何必多加呢。
张元素(号海藏,此处指代引用者海藏,实为张元素弟子或相关流派观点,通常海藏指张元素本人或其学派,此处依原文译)说:能去除脏腑内外的匮乏,既能引导清气上行顺应阳道,又进入足少阳经,大概是因为少阳之气,初出地面如嫩芽般的阳气,所以用少阳来对应它。
Chai Hu (Bupleuri Radix), with a neutral Qi and slightly bitter taste, is slightly cold in nature. Its aroma and flavor are both light, belonging to Yang, possessing ascending properties, and is a pure Yang herb without toxicity.
It primarily enters the Shaoyang Meridian (Foot-Shaoyang Gallbladder Meridian) and Jueyin Meridian (Foot-Jueyin Liver Meridian).
Xiang (Li Dongyuan) states: It eliminates deficiency-labor fever and chills, resolves muscle-layer heat, removes morning tidal fever, and is an essential herb for women before and after childbirth. It excels at treating headaches of this meridian (Shaoyang), which other herbs cannot stop. It treats epigastric fullness (Xin Xia Pi) and chest/diaphragm pain. The root stock (Lu) should be removed before use.
Xin (Zhang Yuansu) states: It is an herb that distributes the Shaoyang Meridian, guiding Stomach Qi upward, using its bitter-cold property to release exterior heat.
Zhen (Zhang Yuansu or referenced text) states: It removes alternating chills and fever, and gallbladder heat (Dan Dan); without this herb, these conditions cannot be eliminated.
Ben Cao (Shennong Bencao Jing) states: It governs heart and abdominal disorders, removes stagnant Qi in the intestines and stomach, dissipates food accumulation, expels pathogenic cold and heat, pushes out the old to bring forth the new, clears vexation and heat under the heart caused by Shanghan (Cold Damage), resolves various phlegm-heat solidities, dispels evil Qi in the chest, regulates wandering Qi among the five Zang organs, treats water retention and distension in the large intestine, and alleviates wet-bi (Damp-Bi) with spasms and contractures. It can also be used as a bath decoction. Long-term consumption lightens the body, brightens the eyes, and benefits essence. Ban Xia (Pinelliae Rhizoma) acts as its assistant; it is incompatible with Zao Jia (Gleditsiae Sinensis Fructus Spina), and fears Nu Wan (Asteris Tatarici Radix) and Li Lu (Veratri Nigrum Rhizoma). It enters the Foot-Shaoyang Meridian and primarily governs the distribution of Wood Qi from the East. In the meridians, it governs Qi; in the Zang organs, it governs Blood. If symptoms advance, there is aversion to heat; if they retreat, there is aversion to cold. Although its Qi is slightly cold and its flavor thin, it can therefore circulate through the meridians. If combined with San Leng (Sparganii Rhizoma), E Zhu (Curcumae Rhizoma), or Ba Dou (Crotonis Fructus), it can eliminate hard accumulations, indicating its primary action on Blood. For women whose menstruation has just started or stopped, or for Shanghan and miscellaneous diseases, Yi Lao (Zhang Yuansu) commonly uses Xiao Chai Hu Tang (Minor Bupleurum Decoction) as the main formula, adding Si Wu Tang (Four Substances Decoction) and herbs like Qin Jiao (Gentianae Macrophyllae Radix) and Mu Dan Pi (Moutan Cortex), collectively serving as formulas to regulate menstruation.
Yan Yi (Kou Zongshi) states: Chai Hu, according to the Ben Jing (Shennong Bencao Jing), contains not a single word regarding the treatment of labor (deficiency-fatigue). Yet, nowadays, few formulas for treating labor omit it. This misleads the world greatly. I have traced the pathology of labor; there is a type involving true Zang organ deficiency where pathogenic heat is superimposed, leading to labor due to deficiency. Thus, "Labor" (Lao) implies "firmness" or "solidity," and one must exercise caution in its use. For example, in Jing Fang (Experience Formulas) for treating labor-fever, Qing Hao Jian Wan (Artemisiae Annuae Decoction Pill) uses Chai Hu appropriately, and it is invariably effective.
Ri Hua Zi (Daily Life Master) states: It has a sweet taste, tonifies the Five Labors and Seven Injuries, relieves vexation and stops惊悸 (palpitations/fright), and boosts Qi strength. Xing Ming Lun (Treatise on Medicinal Properties) also states it treats fatigue, exhaustion, and emaciation. In such cases, if there is no excess-heat, and physicians still use it, death is inevitable. When annotating Ben Cao, every character must not be neglected, as the errors inflicted upon later generations are endless. Wise individuals can manage this themselves; those of average or inferior ability, unwilling to investigate, will recklessly cause patients' demise. How can one not be cautious? How can one not be vigilant? For instance, when Zhang Zhongjing treated alternating chills and fever resembling malaria, he used Chai Hu, which was perfectly appropriate.
Tu Jing (Illustrated Classic) states: There are Da Chai Hu Tang (Major Bupleurum Decoction), Chai Hu Jia Long Gu Mu Li Tang (Bupleurum Plus Dragon Bone and Oyster Shell Decoction), and Chai Hu Jia Mang Xiao Tang (Bupleurum Plus Mirabilite Decoction) for treating Shanghan. Therefore, later generations consider this herb the most crucial for treating Shanghan heat.
Dong Yuan (Li Dongyuan) states: It can guide clear Qi to travel along the Yang pathways. In treating Shanghan, it is added to other herbs only if there is heat; otherwise, it is not added. It also guides Stomach Qi upward, ascending and circulating like the Spring season's energy. To achieve such effects, why add more?
Hai Zang (Zhang Yuansu/Hai Zang School) states: It can remove deficiency within and outside the Zang and Fu organs. Since it guides clear Qi upward to follow the Yang pathway and enters the Foot-Shaoyang Meridian, it corresponds to the fact that Shaoyang Qi, emerging from the earth like tender shoots, represents young Yang. Thus, Shaoyang is used to represent it.