下涎药，并小儿涎潮、螈 多用。然不可常服及过多，多则其损兼行。若兼惊，则
尤须审谨。盖惊为心气不足，不可下，下之里虚，惊气入心不可治。若其人本虚，便须禁此
一物，谨之至也。
非金苗。今有金窟处无雄黄。金条中言金之所生，处处皆有雄黄，岂处处皆得也。别
法，治蛇咬，焚之熏蛇远去。又武都者，镌磨成物形，终不免其臭。唐甄立言仕为太常丞，
有道人病心腹懑烦，弥二岁，诊曰∶腹有蛊，误食发而然。令饵雄黄一剂，少选，吐一蛇如
拇指，无目，烧之有发气，乃愈。此杀毒蛊之验也。
入药最稀，服石者宜审谛。治外功多，方士点化术多用，亦未闻其终始如何。画工或
用之。
今人和治下元虚冷，元气将绝，久患寒泄，脾胃虚弱，垂命欲尽，服之无不效。中
病当便已，不可尽剂。世人盖知用而为福，不知用久为祸。此物损益兼行，若俱弃而不用，
当仓猝之间，又可阙乎？或更以法制，拒火而又常服者，是亦弗思也。在本朝则不言如此服
良，但专治妇人。不知者，往往更以酒服，其可得乎？或脏中久冷，服之先利。如病势危急
，可加丸数服，少则不效。仍加附子、干姜、桂。
如野狼牙者佳。其外色不白，如姜石。其大块者，亦内白。治男子、妇人下部虚冷，
肾气乏绝，子脏久寒，须水飞研用。凡石药冷热皆有毒，正宜斟酌。
下涎药（用于降泄痰涎的药物），以及治疗小儿涎潮（唾液分泌过多或喉间痰鸣）、抽搐等症状时多用。然而不可长期服用及过量服用，过量则其损伤作用也会同时发生。如果兼有惊悸症状，则尤其需要审慎谨慎。因为惊悸是由于心气不足所致，不可使用攻下法，若用攻下法会导致里虚，使惊气入心而难以治愈。如果患者本身体质虚弱，就必须禁止使用这一类药物，这是极其重要的禁忌。
雄黄并非金属的幼苗（即非自然生成的矿物晶体）。如今在有金矿的地方没有雄黄。《金匮要略》等书中提到金的生成之处，处处都有雄黄，难道到处都能得到吗？另有方法，治疗蛇咬伤，焚烧雄黄熏蒸可使蛇远离。另外，武都产的雄黄，雕刻磨制成器物形状，终究不免带有臭味。唐代甄立言担任太常丞时，有一位道人患有心腹闷烦之症，持续两年，他诊断说：“腹中有蛊毒，是误食头发导致的。”让他服用一剂雄黄，不久后，吐出一条如拇指粗的蛇，无眼，烧时有头发的气味，于是病愈。这是杀灭毒蛊的验证。
雄黄入药最为稀少，服用石药的人应当仔细审察。在治疗外用方面功效较多，方士点化炼丹之术多用此药，也未听说其最终结果如何。画工有时也使用它。
如今人们用它来治疗下元虚冷（肾阳不足导致的下部寒冷）、元气将绝、久患寒性腹泻、脾胃虚弱、生命垂危之症，服用后无不有效。中病（病情好转）时就应停药，不可服完整个剂量。世人只知道使用它能带来福报，却不知道长期使用会招致祸患。此物既有补益又有损害，如果完全弃之不用，在紧急关头，又怎能缺少它呢？或者通过其他方法炮制，抗拒火毒而又能长期服用的，这也是没有深思熟虑的表现。在本朝（宋代）则不谈论如此服用效果良好，只是专门用于治疗妇人疾病。不懂的人，往往还用酒送服，这可以吗？如果是脏腑中久寒，服用后先出现腹泻。如果病势危急，可以增加丸药的服用数量，量少则无效。仍需加入附子、干姜、桂枝。
像野狼牙齿形状的雄黄为佳。其外表颜色不白，像姜石一样。大块者，内部也是白色的。用于治疗男子、妇人下部虚冷，肾气乏绝，子宫久寒，必须经过水飞法研磨后使用。凡是石药，无论冷热都有毒性，正应当斟酌用量。
Saliva-reducing medicines (medicines used to drain phlegm and saliva) are frequently used for conditions such as infantile salivary overflow (excessive secretion of saliva or gurgling sound in the throat) and convulsions. However, they should not be taken continuously or in excessive amounts; excessive intake causes its damaging effects to manifest simultaneously. If accompanied by fright palpitations, extreme caution is required. This is because fright palpitations stem from a deficiency of Heart Qi (vital energy of the heart), and purgative methods should not be used. Using purgatives leads to interior deficiency, allowing fright Qi to enter the Heart, making it incurable. If the patient's constitution is inherently deficient, this category of medicine must be strictly prohibited; this is an utmost precaution.
Realgar is not the "sprout" of metal (i.e., not a naturally formed mineral crystal). Currently, there is no realgar in places with gold mines. Texts such as *Jin Gui Yao Lue* mention that wherever gold is generated, realgar exists everywhere; yet, can it be obtained everywhere? Another method involves treating snakebites by burning realgar to fumigate, which drives snakes away. Additionally, realgar from Wudu, when carved and polished into shapes, still inevitably retains an odor. Zhen Liyan of the Tang Dynasty served as Taichang Cheng. A Daoist priest suffered from chest and abdominal fullness and irritability for two years. Zhen diagnosed: "There is a gu poison in the abdomen, caused by accidentally ingesting hair." He prescribed one dose of Realgar (Xionghuang). Shortly after, the patient vomited a snake about the thickness of a thumb, without eyes, which emitted the smell of burnt hair when incinerated, and the illness was cured. This is verification of the efficacy of killing toxic gu poisons.
Realgar is rare in medicinal use; those taking stone medicines should examine it carefully. It has many external therapeutic applications and is often used by alchemists in transmutation techniques, though the final outcomes remain unknown. Painters sometimes use it as well.
Currently, people use it to treat coldness in the lower origin (deficiency of Kidney Yang causing coldness in the lower body), impending exhaustion of Yuan Qi (primordial qi), chronic cold diarrhea, spleen and stomach weakness, and critical condition where life is fading; administration is invariably effective. One should stop medication once the disease is addressed (zhong bing - hitting the mark/curing the symptom) and not consume the entire dose. The world knows that using it brings blessings but does not know that long-term use brings disaster. This substance has both beneficial and harmful effects. If completely discarded and unused, how could it be omitted in emergencies? Or, if processed by other methods to resist fire toxicity while allowing long-term consumption, this is also a failure to think deeply. In our dynasty (Song), it is not said that such usage is excellent, but rather it is specialized for treating women's diseases. Those who do not understand often administer it with wine; is this advisable? If there is long-standing cold in the zang organs, taking it may first cause diarrhea. If the disease trend is critical, the number of pills can be increased; too little will be ineffective. It is still necessary to add Fuzi (Prepared Aconite Root), Ganjiang (Dried Ginger), and Guizhi (Cinnamon Twig).
Realgar resembling wild wolf teeth is superior. Its outer color is not white, resembling Jiangshi (Ginger Stone). Large pieces are also white inside. It is used to treat coldness in the lower parts of men and women, exhaustion of Kidney Qi, and long-standing cold in the Zi Zang (uterus); it must be used after being ground via the water-flying method (shui fei). All stone medicines, whether cold or hot natured, possess toxicity; therefore, dosage must be carefully weighed.