泻热，利痰，凉惊
甘凉。牛有病，在心、肝、胆之间凝结成黄，故还以治心、肝、胆之病（《经疏》云∶
牛食百草，其精华凝结成黄，犹人之有内丹。故能散火、消痰、解毒，为世神物。或云牛病
乃生黄者，非也）。清心解热，利痰凉惊，通窍辟邪。治中风入脏，惊痫口噤（心热则火自
生焰，肝热则木自生风，风火相搏，胶痰上壅，遂致中风不语。东垣曰∶中脏宜之。若中
腑及血脉者用之，反能引风入骨，如油入面。按∶中风中脏者重，多滞九窍；中腑稍轻，多
着四肢。若外无六经形证，内无便溺阻隔，为中经络，为又轻。初宜顺气开痰，次宜养血活
血，不宜专用风药。大抵五脏皆有风，而犯肝者为多。肝属风木而主筋，肝病不能营筋，故
有舌强口噤， 斜、瘫痪、不遂、不仁等症。若口开为心绝；手散为脾绝；眼合为肝绝；遗
尿为肾绝；吐沫鼻衄为肺绝；发直头摇、面赤如妆、汗缀如珠者，皆不治。若只见一二症，
犹有可治者），小儿百病（皆胎毒、痰热所生。儿初生时未食乳，用三五厘，合黄连、甘草
末蜜调，令咂之良），发痘堕胎（善通窍）。牛有黄，必多吼唤，以盆水承之，伺其吐出迫喝
即堕水，名生黄，如鸡子黄大，重叠可揭。轻虚、气香者良（观此则非病乃生黄矣）。杀死，
角中得者名角黄，心中者名心黄，肝、胆中者名肝、胆黄。成块成粒，总不及生者。但磨指
甲上，黄透指甲者为真（骆驼黄极易得，能乱真）。得牡丹、菖蒲良（聪耳明目），人参为使。
恶龙骨、龙胆、地黄、常山。
泻除热邪，通利痰浊，清凉镇惊。
味甘性凉。牛患病时，在心、肝、胆之间凝结形成牛黄，因此还能用来治疗心、肝、胆的疾病（《经疏》说：牛吃百草，其精华凝结成黄，就像人修炼内丹一样。所以能散火、消痰、解毒，是世间的神物。有人说牛生病才产生黄，这是不对的）。清心解热，利痰镇惊，通窍辟邪。治疗中风入脏，惊痫口噤（心热则火自生焰，肝热则木自生风，风火相搏，胶痰上壅，遂致中风不语。东垣曰∶中脏宜之。若中腑及血脉者用之，反能引风入骨，如油入面。按∶中风中脏者重，多滞九窍；中腑稍轻，多着四肢。若外无六经形证，内无便溺阻隔，为中经络，为又轻。初宜顺气开痰，次宜养血活血，不宜专用风药。大抵五脏皆有风，而犯肝者为多。肝属风木而主筋，肝病不能营筋，故有舌强口噤， 斜、瘫痪、不遂、不仁等症。若口开为心绝；手散为脾绝；眼合为肝绝；遗尿为肾绝；吐沫鼻衄为肺绝；发直头摇、面赤如妆、汗缀如珠者，皆不治。若只见一二症，犹有可治者），小儿百病（皆胎毒、痰热所生。儿初生时未食乳，用三五厘，合黄连、甘草末蜜调，令咂之良），发痘堕胎（善通窍）。牛有黄，必多吼唤，以盆水承之，伺其吐出迫喝即堕水，名生黄，如鸡子黄大，重叠可揭。轻虚、气香者良（观此则非病乃生黄矣）。杀死，角中得者名角黄，心中者名心黄，肝、胆中者名肝、胆黄。成块成粒，总不及生者。但磨指甲上，黄透指甲者为真（骆驼黄极易得，能乱真）。得牡丹、菖蒲良（聪耳明目），人参为使。恶龙骨、龙胆、地黄、常山。
Drains heat, resolves phlegm, and cools to calm convulsions.
Sweet and cool in nature. When a cow is ill, yellowish concretions form between the heart, liver, and gallbladder; thus, it can also treat diseases of these organs (Jingshu states: Cows ingest various herbs, and their essence condenses into yellow, similar to humans cultivating internal elixirs. Therefore, it can dissipate fire, resolve phlegm, and detoxify, making it a divine substance among medicines. Some claim that yellow forms only when cows are sick, which is incorrect). It clears the heart and dissipates heat, resolves phlegm and calms convulsions, opens orifices, and expels evil pathogens. It treats wind-stroke affecting the zang organs, epilepsy with locked jaw (Heart heat generates flames spontaneously; Liver heat generates wind spontaneously. Wind and fire contend, causing sticky phlegm to obstruct upwards, leading to wind-stroke with muteness. Dongyuan says: It is suitable for wind-stroke affecting the zang organs. If used for wind-stroke affecting the fu organs or meridians and vessels, it may instead draw wind into the bones, like oil penetrating into flour. Note: Wind-stroke affecting the zang organs is severe, often obstructing the nine orifices; wind-stroke affecting the fu organs is slightly milder, often affecting the four limbs. If there are no exterior manifestations of the six channels and no internal obstruction of urination or defecation, it is classified as wind-stroke affecting the collaterals, which is even milder. Initially, one should regulate qi and resolve phlegm; subsequently, nourish blood and invigorate blood circulation, avoiding exclusive use of wind-dispelling drugs. Generally, all five zang organs can be affected by wind, but the Liver is most commonly involved. The Liver belongs to wind-wood and governs the sinews. Liver disease fails to nourish the sinews, resulting in symptoms such as stiff tongue, locked jaw, facial deviation, paralysis, inability to move, and numbness. If the mouth is open, it indicates Heart exhaustion; if hands are scattered, Spleen exhaustion; if eyes are closed, Liver exhaustion; if urine is incontinent, Kidney exhaustion; if foaming at the mouth and epistaxis occur, Lung exhaustion; if hair stands erect, head shakes, face is red like makeup, and sweat beads like pearls, these are all untreatable. However, if only one or two symptoms appear, there is still hope for treatment). It treats various pediatric diseases (all caused by fetal toxins and phlegm-heat. When a newborn has not yet taken milk, use three to five fen, mixed with powder of Huanglian and Gancao and honey, and let the infant suckle it, which is effective). It induces abortion and promotes eruption of smallpox/variolae (excels at opening orifices). Cows possessing this concretion will likely bellow frequently. Place a basin of water beneath them; when they vomit it out, urge them immediately so it falls into the water. This is called "raw huang," about the size of an egg yolk, layered and peelable. Those that are light, hollow, and fragrant are superior (Observing this, we see it is not a disease but naturally formed huang). If obtained from a slaughtered cow, those found in the horn are called "horn huang"; those in the heart, "heart huang"; those in the liver and gallbladder, "liver and gallbladder huang." Those formed into lumps or grains are generally inferior to raw huang. To verify authenticity, grind it on a fingernail; if the yellow color penetrates through the nail, it is genuine (Camel huang is easily obtained and can counterfeit genuine huang). It works well with Mudanpi and Changpu (benefits hearing and vision), and Renshen serves as its guide drug. It is incompatible with Longgu, Longdan, Dihuang, and Changshan.