有人一时猝中，手足牵搐，口眼 斜，然神思则清，言语如故，人以为阳虚中风也
，而熟知不然。夫阳虚猝倒，未有不神昏者也。今猝倒而心中明了，状似阳虚，而非阳虚，
此乃阴虚之中耳。夫阴虚非血虚之谓，盖真阴之虚，肾水干枯，不能上滋于心，故痰来侵心
，一时迷乱而猝中。及痰气既散，而心之清如故也。作中风治，非其治也，即作中气治，亦
非治法。惟有直补其肾中之阴，则精足而肾自交于心，而心之液，自流行于各脏腑，而诸症
自痊也。方用填阴汤∶
熟地（四两） 山茱萸（二两） 北五味（三钱） 麦冬（一两） 山药（一两） 白芥子（五钱） 破故纸（一
钱
牛膝（三钱） 附子（一分）
水煎服。一剂而牵搐除，再剂而口眼正，一连十剂而平复如常矣。
夫熟地、山茱、山药，实填精之圣药，而麦冬、北五味，又益肺之仙丹。盖单补肾水，
恐水不能速生，故又补其肺，使肺金以生肾水，子母相资，更易滋润也。又虑阴不下降，用
破故、牛膝下行以安于肾宫，则浊阴不致上干，而真阴自然既济矣。复加附子一分者，以阴
药太多，未免过于腻滞，少加附子，以行其真阴之气，非假之以助其火也。水得火之气，则
水尤易生，毋怪其奏功之奇矣。
此症用清宁汤亦效。
熟地 麦冬（各二两） 北五味（三钱） 芡实 巴戟天 菟丝子（各一两）
水煎服。
有人平居无恙，只觉手足麻木，尚无口眼 斜等症，人以为风中于内，三年后必有
晕仆之症矣。劝人预服搜风顺气等药，以防猝中
。其论则是，而所用之方非也。手足麻木，乃气之虚，非气之不顺也。即气之不顺，非
风之作祟也。人苟中风，其来甚暴，岂待至三年之后而始发哉。然而气虚能使手足麻者，何
故?盖气一虚，即不能化痰，痰聚于胸中，而气即不能通于手足也。治法于补气之中而佐以
消痰之味，则得之矣。方用释麻汤∶
人参（一钱） 当归（三钱） 黄 （三钱） 茯苓（三钱） 半夏（一钱） 白芥子（一钱） 陈皮（一钱） 白
术
（三钱） 甘草（五分） 附子（一分） 柴胡（八分）
水煎服。一连四剂，而手足自然不麻不木矣。
倘仍然麻木，前方加倍，再服四剂，未有不愈者。
盖麻木于手足，此四余之轻病，原不必重治之也。今人因不知症，所以取效之缓，遂疑
为重症。于是风药乱投，反致变轻为重矣。苟知是虚而非风，一治虚而风象灭矣，何难之有
此症用 附汤亦妙。
人参 茯神（各三钱） 白术 黄 （各五钱） 附子（二分）
水煎服。
有人遍身麻木，而身又不颠仆，状似中风，然而风则有之，而非中也。此等之病，不可
不治风，而又不可直治风也。不治风则风不能出于躯壳之外，直治风则损伤气血，风又欺气
血之虚，反客为主而不肯去，必须于补气补血之中，而佐之祛风祛痰之品，则气血不伤，而
风又易散也。方用解缚汤∶
黄 （一两） 当归（五钱） 人参（五钱） 附子（一钱） 白芍（五钱） 葳蕤（一两） 白术（五钱） 熟
地（五
钱） 天花粉（三钱） 秦艽（三钱） 羌活（一钱）
水煎服。一连四剂，身知痛痒矣，十剂全愈。
同一麻木之症，何以上条用药之少，而此条用药之多且重耶?盖上条麻木，止在手足，
尚无风之入体也，此条麻木，在于遍身，是风乘虚而入腑矣，原不可同日而语也。故上条可
以轻治，而此条非重治断难奏效耳。
此症用顺气和血汤亦大佳。
当归（三钱） 白术（五钱） 黄 （五钱） 人参（二钱） 附子（一片） 天麻 南星 羌活 独活（各五
分） 半夏（一钱）
水煎服。
有人天禀甚浓，又素好烧酒，一时怒气相激，致成口眼 斜，有似中风，而未尝身
仆，且善饮食，其脉洪大有力，此非风中，乃火盛而肝伤也。此等之症，在西北人甚多，而
南人甚少。然而治法，又不可徒泄火而不养肝血也。方用∶
酒蒸大黄（二钱） 柴胡（一钱） 白芍（一两） 当归（一两） 白芥子（二钱） 炒栀子（二钱）
水煎服。方名解焚汤。用大黄以泻其火酒之毒；用栀子以泄其肝木之火，用二味祛除，
未免过于迅利。复用芍药、当归以大补其肝血，盖血足而火自息也；加柴胡、白芥子以舒其
肝叶之气，而消其膜膈之痰，痰消而肝气益舒，肝气舒而风象自去。倘误以为中风也，而妄
加入麻黄、羌活等药，愈祛风而愈动其火矣。或不去滋肝，而反去补气，则阳旺而气盛，转
来助火，肝中血燥，益足以增添怒气，势必火亢自焚，而成猝中之症矣。
此症亦可用宽气汤∶
柴胡 乌药 秦艽 甘草 酒蒸大黄（各一钱） 白芍（一两） 茯苓（三钱） 当归（三钱） 天麻
防风（各三分） 天花粉（二钱）
水煎服。
有人猝中之后，手足流注疼痛，久之则麻痹不仁，难以屈伸，人以为中风之伤，以致风
湿相搏，关节不利也，而不知不然。此症实因先有水湿，人不知治元气之衰，而反去祛风利
湿，以成似中风之症也。既因虚而成湿，又因湿而致中，不去治元气之虚，尚可治风湿之旺
乎。然而风湿既已搏结于一身，但去补气而不去祛风利湿，亦非救误之道也。今用两利汤
白术（五钱） 茯苓（五钱） 薏仁（一两） 人参（一钱） 甘草（五分） 白芍（一两） 当归（一钱） 肉
桂（三
分） 防风（五分） 半夏（一钱）
水煎服。连服四剂而疼痛止，再服十剂而麻痹愈，再服十剂而屈伸尽利矣。
方中补多于攻，用防风以散风，而不用泽泻、猪苓以利水。盖因虚而成风湿，既祛其风
，何可复泻其水。况方中白术、薏仁未尝非利水之药也，于补水之中以行其利水之法，则水
易流，而无阻滞之虞。水湿既去，而风难独留，故少用防风以表邪，而孤子之风邪，无水艰
于作浪，不必多用风药，而风无不除也。
此症用至仁汤亦能收功。
白术 黄 白芍 天花粉（各三钱） 茯苓（五钱） 车前子（一钱） 防风（五分） 甘草（五分） 肉
桂（三分） 益智仁（五分）
水煎服。
有人突然中风，手足抽搐牵引，口眼歪斜，但神志清醒，言语如常，人们认为是阳虚中风，却不知并非如此。阳虚导致的突然昏倒，没有不出现神志昏迷的。现在突然昏倒而心中清明，症状看似阳虚，实则不是阳虚，这是阴虚中风。所谓阴虚，并非指血虚，而是真阴亏虚，肾水干枯，不能上滋于心，因此痰邪侵扰心神，一时迷乱而突发中风。待痰气消散后，心的清明状态恢复如初。若按中风治疗，不是正确的治法；即使按中气（气机逆乱）治疗，也不是恰当的方法。只有直接补肾中之阴，使精充足则肾气自然上交于心，心液自然流行于各脏腑，诸症自然痊愈。方用填阴汤：熟地四两、山茱萸二两、北五味子三钱、麦冬一两、山药一两、白芥子五钱、破故纸一钱、牛膝三钱、附子一分。水煎服。一剂后抽搐停止，两剂后面部端正，连续服用十剂后完全康复。
熟地、山茱萸、山药是填补精髓的圣药，麦冬、北五味子是补益肺气的仙丹。因为单纯补肾水，恐怕水不能迅速滋生，所以又补肺气，使肺金生肾水，子母相生，更容易滋润。又担心阴气不能下降，使用破故纸、牛膝下行以安守于肾宫，这样浊阴就不会上犯，真阴自然既济。再加一分附子的原因，是因为滋阴药太多，未免过于腻滞，少量加入附子，以运行真阴之气，并非借它来助火。水得到火的气化作用，则水更容易生成，难怪其疗效神奇。
此症用清宁汤也有效。熟地、麦冬各二两，北五味子三钱，芡实、巴戟天、菟丝子各一两。水煎服。
有人平时身体健康，只感觉手足麻木，还没有口眼歪斜等症状，人们认为风邪内中，三年后必有晕倒的症状。劝人预先服用搜风顺气等药物，以防突然中风。这种理论是对的，但所用的方剂不对。手足麻木，是气虚，不是气机不顺。即使是气机不顺，也不是风邪作祟。人如果中风，发病非常急骤，岂会等到三年后才发作呢？然而气虚为什么能使手足麻木呢？因为气一旦虚弱，就不能化痰，痰聚积在胸中，气就不能通达于手足。治疗方法是在补气之中辅以消痰的药物，就对了。方用释麻汤：人参一钱、当归三钱、黄芪三钱、茯苓三钱、半夏一钱、白芥子一钱、陈皮一钱、白术三钱、甘草五分、附子一分、柴胡八分。水煎服。连续服用四剂，手足自然不再麻木。
如果仍然麻木，前方剂量加倍，再服四剂，没有不愈的。
手足麻木，这只是四肢的轻病，原本不必重治。今人因为不懂病症，见效慢，就怀疑是重症。于是乱投风药，反而把轻病变成重病。如果知道这是虚证而非风邪，治疗虚证则风象自灭，有什么难的？此症用加附汤也很妙。人参、茯神各三钱，白术、黄芪各五钱，附子二分。水煎服。
有人全身麻木，身体却不跌倒，症状像中风，然而有风邪，却不是中风的实证。这类病，不可不治风，但又不能直接治风。不治风，风邪不能出于体外；直接治风，会损伤气血，风邪又会趁气血之虚，反客为主而不肯离去。必须在补气补血之中，辅以祛风祛痰的药物，这样气血不伤，风邪又容易消散。方用解缚汤：黄芪一两、当归五钱、人参五钱、附子一钱、白芍五钱、葳蕤一两、白术五钱、熟地五钱、天花粉三钱、秦艽三钱、羌活一钱。水煎服。连续服用四剂，身体能知痛痒，十剂全愈。
同样是麻木的症状，为什么上一条用药少，这一条用药多且重呢？上一条麻木仅在手足，尚无风邪入体；这一条麻木在于遍身，是风邪乘虚侵入腑脏，原本不可同日而语。所以上一条可轻治，这一条非重治难以奏效。此症用顺气和血汤也很好。当归三钱、白术五钱、黄芪五钱、人参二钱、附子一片、天麻、南星、羌活、独活各五分、半夏一钱。水煎服。
有人天赋禀赋浓厚，又素来喜好喝烧酒，一时怒气相激，导致口眼歪斜，似中风，但未曾身体仆倒，且饮食正常，脉象洪大有力，这不是风邪中阻，而是火盛伤肝。这类病症，在西北人中很多，南方人中很少。然而治法，又不能只泄火而不养肝血。方用：酒蒸大黄二钱、柴胡一钱、白芍一两、当归一两、白芥子二钱、炒栀子二钱。水煎服。方名解焚汤。用大黄泻其酒毒之火；用栀子泄其肝木之火，用这两味祛除，未免过于迅利。再用芍药、当归大补肝血，因为血足则火自息；加柴胡、白芥子以舒展肝叶之气，消除膜膈之痰，痰消则肝气更舒，肝气舒则风象自去。倘若误以为是中风，妄加麻黄、羌活等药，越祛风越动火。或者不去滋养肝血，反而去补气，则阳气旺盛而气盛，转而助火，肝中血燥，更足以增添怒气，势必火亢自焚，而成猝中之症。此症也可用宽气汤：柴胡、乌药、秦艽、甘草、酒蒸大黄各一钱，白芍一两，茯苓三钱，当归三钱，天麻、防风各三分，天花粉二钱。水煎服。
有人中风之后，手足流注疼痛，久则麻痹不仁，难以屈伸，人们认为是中风受伤，导致风湿相搏，关节不利，却不知并非如此。此症实在是因为先有水湿，人们不知道治疗元气衰败，反而去祛风利湿，造成类似中风的症状。既然因虚而成湿，又因湿而致中，不去治元气的虚，还可以治风湿的旺吗？然而风湿既然已经搏结于一身，只去补气而不去祛风利湿，也不是补救错误的方法。现在用两利汤：白术五钱、茯苓五钱、薏苡仁一两、人参一钱、甘草五分、白芍一两、当归一钱、肉桂三分、防风五分、半夏一钱。水煎服。连服四剂疼痛止，再服十剂麻痹愈，再服十剂屈伸自如。
方中补多于攻，用防风散风，而不用泽泻、猪苓利水。因为因虚而成风湿，既已祛其风，何可再泻其水。况且方中白术、薏苡仁未尝不是利水之药，在补水之中行利水之法，则水易流，无阻滞之虞。水湿既去，风难独留，故少用防风以解表邪，孤立的的风邪，无水难以兴风作浪，不必多用风药，风无不除。此症用至仁汤也能收功。白术、黄芪、白芍、天花粉各三钱，茯苓五钱，车前子一钱，防风五分，甘草五分，肉桂三分，益智仁五分。水煎服。
A person suddenly suffers from stroke, with twitching and pulling of the limbs, and deviation of the mouth and eyes, yet their spirit is clear and speech remains normal. People consider this to be wind-stroke due to Yang deficiency (Yang Xu Zhong Feng), but they do not realize it is not so. Sudden collapse due to Yang deficiency invariably involves loss of consciousness. Now, although there is sudden collapse, the mind remains clear; the appearance resembles Yang deficiency, but it is not. This is wind-stroke due to Yin deficiency (Yin Xu Zhong). "Yin deficiency" here does not mean blood deficiency, but rather a deficiency of True Yin (Zhen Yin). The Kidney Water (Shen Shui) is dried up and cannot nourish the Heart (Xin) from below, allowing Phlegm (Tan) to invade the Heart, causing momentary confusion and sudden stroke. Once the Phlegm-Qi dissipates, the clarity of the Heart returns to its original state. Treating this as wind-stroke is incorrect; treating it as Qi obstruction (Zhong Qi) is also inappropriate. Only by directly tonifying the Yin in the Kidneys can Essence (Jing) become sufficient, allowing Kidney Qi to naturally ascend to the Heart, and Heart fluids to circulate freely among the Zang-Fu organs, leading to spontaneous recovery of all symptoms. Use Tianyin Tang: Prepared Rehmannia Root (Shu Di Huang) 4 liang, Cornus Fruit (Shan Zhu Yu) 2 liang, Schisandra Berry (Bei Wu Wei Zi) 3 qian, Ophiopogon Tuber (Mai Dong) 1 liang, Chinese Yam (Shan Yao) 1 liang, White Mustard Seed (Bai Jie Zi) 5 qian, Cistanche Stem (Po Gu Zhi) 1 qian, Achyranthes Root (Niu Xi) 3 qian, Aconite Root (Fu Zi) 1 fen. Decoct in water and take orally. After one dose, the twitching ceases; after two doses, the mouth and eyes straighten; after ten consecutive doses, full recovery is achieved.
Prepared Rehmannia Root, Cornus Fruit, and Chinese Yam are sacred herbs for filling Essence. Ophiopogon Tuber and Schisandra Berry are immortal elixirs for benefiting the Lung (Fei). Merely tonifying Kidney Water may fail to generate water quickly; therefore, the Lung is also tonified, allowing Lung Metal to generate Kidney Water. The mother and son mutually support each other, facilitating easier nourishment. Furthermore, fearing that Yin will not descend, Cistanche Stem and Achyranthes Root are used to guide Qi downward to settle in the Kidney Palace, preventing turbid Yin from harassing upwards, thus allowing True Yin to achieve mutual interaction (Ji Ji). The addition of 1 fen of Aconite Root is because excessive Yin-nourishing herbs tend to be cloying and stagnant; a small amount of Aconite Root moves the Qi of True Yin, not to assist Fire, but to facilitate circulation. When Water receives the Qi of Fire, it generates more easily, explaining the miraculous efficacy.
This condition can also be treated with Qingning Tang: Prepared Rehmannia Root and Ophiopogon Tuber (each 2 liang), Schisandra Berry 3 qian, Euryale Seed (Qian Shi), Morinda Root (Ba Ji Tian), and Dodder Seed (Tu Si Zi) (each 1 liang). Decoct in water and take orally.
Someone who is usually healthy feels only numbness in the hands and feet, without symptoms like deviation of the mouth and eyes. People believe internal Wind (Feng) has invaded and predict fainting within three years. They advise taking pre-emptive formulas like Soushun Fengqi Tang to prevent sudden stroke. While the theory is correct, the formula is wrong. Numbness in the limbs is due to Qi deficiency (Qi Xu), not Qi stagnation. Even if it were Qi stagnation, it would not be caused by Wind. If one suffers from wind-stroke, the onset is abrupt; why wait three years? Why does Qi deficiency cause limb numbness? Because when Qi is deficient, it cannot transform Phlegm. Phlegm accumulates in the chest, blocking the flow of Qi to the limbs. The treatment should involve tonifying Qi while assisting with phlegm-resolving herbs. Use Shimai Tang: Ginseng Root (Ren Shen) 1 qian, Angelica Sinensis Root (Dang Gui) 3 qian, Astragalus Root (Huang Qi) 3 qian, Poria (Fu Ling) 3 qian, Pinellia Tuber (Ban Xia) 1 qian, White Mustard Seed (Bai Jie Zi) 1 qian, Tangerine Peel (Chen Pi) 1 qian, Atractylodes Macrocephala Rhizome (Bai Zhu) 3 qian, Licorice Root (Gan Cao) 5 fen, Aconite Root (Fu Zi) 1 fen, Bupleurum Root (Chai Hu) 8 fen. Decoct in water and take orally. After four consecutive doses, the numbness naturally subsides.
If numbness persists, double the dosage of the previous formula and take for another four doses; recovery is guaranteed.
Numbness in the limbs is a mild disease of the extremities and does not require heavy treatment. Modern practitioners, unaware of the syndrome, suspect severe illness due to slow results and indiscriminately use Wind-dispelling drugs, turning mild cases into severe ones. If one understands this is deficiency rather than Wind, treating the deficiency extinguishes the Wind-like manifestations. What difficulty is there? This condition can also be effectively treated with Jiafu Tang: Ginseng Root and Spirit of Poria (Fu Shen) (each 3 qian), Atractylodes Macrocephala Rhizome and Astragalus Root (each 5 qian), Aconite Root 2 fen. Decoct in water and take orally.
Someone experiences whole-body numbness without falling, resembling wind-stroke, yet it is Wind present but not true stroke. Such diseases must treat Wind, but not directly. Not treating Wind prevents its expulsion from the body; treating Wind directly damages Qi and Blood, allowing Wind to exploit the deficiency and dominate. One must combine Qi and Blood tonification with Wind-dispelling and Phlegm-resolving herbs. This protects Qi and Blood while facilitating Wind dispersion. Use Jiefu Tang: Astragalus Root 1 liang, Angelica Sinensis Root 5 qian, Ginseng Root 5 qian, Aconite Root 1 qian, White Peony Root (Bai Shao) 5 qian, Polygonatum Rhizome (Wei Rui) 1 liang, Atractylodes Macrocephala Rhizome 5 qian, Prepared Rehmannia Root 5 qian, Trichosanthes Root (Tian Hua Fen) 3 qian, Gentian Root (Qin Jiao) 3 qian, Notopterygium Rhizome (Qiang Huo) 1 qian. Decoct in water and take orally. After four consecutive doses, sensation returns; after ten doses, full recovery occurs.
Why is the medication lighter in the previous case but heavier here, despite both being numbness? In the previous case, numbness was limited to the limbs, with no Wind entering the body. Here, numbness covers the whole body, indicating Wind has entered the Fu organs due to deficiency. These are not comparable. Thus, the former requires light treatment, while the latter demands heavy treatment for efficacy. This condition is also excellently treated with Shunqi Heblood Tang: Angelica Sinensis Root 3 qian, Atractylodes Macrocephala Rhizome 5 qian, Astragalus Root 5 qian, Ginseng Root 2 qian, Aconite Root 1 slice, Gastrodia Rhizome (Tian Ma), Arisaema Rhizome (Nan Xing), Notopterygium Rhizome, and Saposhnikovia Root (Du Huo) (each 5 fen), Pinellia Tuber 1 qian. Decoct in water and take orally.
Someone with strong constitution and a habit of drinking strong liquor experiences anger-induced deviation of the mouth and eyes, resembling stroke but without falling. Appetite is good, and the pulse is large and forceful. This is not Wind invasion, but excessive Fire injuring the Liver (Gan). This syndrome is common in Northwest China but rare in the South. Treatment must not merely drain Fire without nourishing Liver Blood. Use: Wine-processed Rhubarb (Jiu Zheng Da Huang) 2 qian, Bupleurum Root 1 qian, White Peony Root 1 liang, Angelica Sinensis Root 1 liang, White Mustard Seed 2 qian, Stir-fried Gardenia Seed (Chao Zhi Zi) 2 qian. Decoct in water and take orally. The formula is named Jiafen Tang. Rhubarb drains the Fire-toxin of alcohol; Gardenia drains Liver Wood Fire. Using these two alone is too rapid. Therefore, White Peony Root and Angelica Sinensis Root are added to greatly tonify Liver Blood, as sufficient Blood extinguishes Fire. Bupleurum Root and White Mustard Seed soothe Liver Qi and resolve Phlegm in the diaphragm. Resolved Phlegm allows smoother Liver Qi, which dispels Wind-like manifestations. Mistaking this for stroke and adding Ephedra Herb (Ma Huang) or Notopterygium Rhizome would agitate Fire further. Failing to nourish Liver Blood and instead tonifying Qi would strengthen Yang and Qi, aiding Fire, drying Liver Blood, increasing anger, and potentially leading to sudden stroke via self-immolation by Fire. This condition can also be treated with Kuanqi Tang: Bupleurum Root, Lindera Root (Wu Yao), Gentian Root, Licorice Root, and Wine-processed Rhubarb (each 1 qian), White Peony Root 1 liang, Poria 3 qian, Angelica Sinensis Root 3 qian, Gastrodia Rhizome and Saposhnikovia Root (each 3 fen), Trichosanthes Root 2 qian. Decoct in water and take orally.
After a stroke, someone experiences flowing pain in the limbs, eventually leading to paralysis and inability to flex or extend. People attribute this to Wind-Dampness (Feng Shi) clashing at the joints due to stroke injury, but this is incorrect. This condition actually stems from pre-existing Dampness-Water. Ignoring the decline of Yuan Qi (Primal Qi) and instead using Wind-dispelling and Diuretic methods creates a stroke-like syndrome. Since deficiency created Dampness, and Dampness led to the stroke-like presentation, treating Yuan Qi deficiency is primary; treating excess Dampness-Wind is secondary. However, since Wind-Dampness is bound throughout the body, merely tonifying Qi without dispelling Wind and draining Dampness is not a corrective approach. Use Liangli Tang: Atractylodes Macrocephala Rhizome 5 qian, Poria 5 qian, Coix Seed (Yi Yi Ren) 1 liang, Ginseng Root 1 qian, Licorice Root 5 fen, White Peony Root 1 liang, Angelica Sinensis Root 1 qian, Cinnamon Bark (Rou Gui) 3 fen, Saposhnikovia Root 5 fen, Pinellia Tuber 1 qian. Decoct in water and take orally. After four doses, pain stops; after ten doses, paralysis heals; after another ten doses, flexibility is fully restored.
The formula emphasizes tonification over attack. Saposhnikovia Root disperses Wind, but Plantago Seed (Ze Xie) and Polyporus (Zhu Ling) are omitted for diuresis. Since Wind-Dampness arose from deficiency, once Wind is dispersed, further draining Water is inadvisable. Moreover, Atractylodes Macrocephala Rhizome and Coix Seed possess diuretic properties. Promoting diuresis within the context of tonifying Water allows fluid flow without obstruction. Once Dampness-Water is removed, Wind cannot remain alone. Thus, a small amount of Saposhnikovia Root releases exterior pathogens. Isolated Wind, lacking Water to create waves, is easily eliminated without excessive Wind-dispelling herbs. This condition can also be successfully treated with Zhiren Tang: Atractylodes Macrocephala Rhizome, Astragalus Root, White Peony Root, and Trichosanthes Root (each 3 qian), Poria 5 qian, Plantago Seed 1 qian, Saposhnikovia Root 5 fen, Licorice Root 5 fen, Cinnamon Bark 3 fen, Alpinia Oxyphylla Fruit (Yi Zhi Ren) 5 fen. Decoct in water and take orally.