重，镇惊，劫痰，消积
辛咸小毒。感银铅之气而结。坠痰镇惊，止血散肿，消积杀虫，疗肿毒，愈冻疮（用桐
油调敷），解狐臭（油调搽腋。以馒头蒸热劈开，掺末夹腋下亦佳），染髭须。出银坑难得，
今用者乃倾银 底。入药煮一伏时。
重，镇心，定惊，泻热
体阳性阴（内含阴汞），味甘而凉，色赤属火（性反惊者，离中虚有阴也。味不苦而甘
者，火中有土也）。泻心经邪热（心经血分主药），镇心清肝，明目发汗（汗为心液），定惊
祛风，辟邪（胡玉少卿多恶梦，遇推官胡用之，胡曰∶昔常患此，有道士教戴灵砂而验。逐
解髻中绛囊授之，即夕无梦）解毒（胎毒、痘毒宜之），止渴安胎（《博救方》∶水煮一两，
研，酒服，能下死胎。李时珍曰∶同远志、龙骨之类养心气；同丹参、当归之类养心血；同
地黄、枸杞之类养肾；同浓朴，川椒之类养脾；同南星、川乌之类祛风。多服反令人痴呆）。
辰产，明如箭镞者良（名箭镞砂）。细研，水飞三次用（生用无毒，火炼则有毒，服饵常杀
人）。恶磁石。畏盐水。忌一切血（郑康成注《周礼》，以丹砂、雄黄、石胆、矾石、磁石为
五毒，古人用以攻疡）。
重，外用杀虫
辛寒，阴毒。功专杀虫。治疮疥虮虱（性滑重，且入肉。头疮切不可用，恐入经络，令
人筋骨拘挛），解金、银、铜、锡毒（能杀五金），堕胎绝孕。从丹砂烧 而出。畏磁石、砒
霜。得铅则凝，得硫则结，并枣肉入唾研则碎。散失在地者，以花椒、茶末收之。
【密陀僧】
质地沉重，能镇惊安神，攻逐痰涎，消除积滞。
味辛、咸，有小毒。因感受银、铅之气而凝结而成。具有坠痰镇惊、止血散肿、消积杀虫的功效，治疗肿毒，治愈冻疮（用桐油调敷），解除狐臭（用油调和搽涂腋下；或将馒头蒸热后劈开，掺入药末夹在腋下也很好），还能染黑胡须。产自银矿者难得，现在使用的是倾炼白银时留下的底渣。入药需煮一个时辰（十二小时）。
【丹砂】
质地沉重，能镇心，定惊，泻除热邪。
体性阳中寓阴（内含阴性的汞），味甘而性凉，色赤属火（若服用后反而引起惊悸，是因为离卦中虚含有阴气；味道不苦而甘，是因为火中有土）。泻除心经的邪热（是心经血分的主药），镇心安神、清肝明目、发汗（汗为心之液）、定惊祛风、辟除邪气（胡玉少卿多恶梦，遇到推官胡用之，胡说：“我以前常患此病，有道士教他戴灵砂便见效。于是解开发髻中的红囊给他，当晚就不再做梦）解毒（适合胎毒、痘毒），止渴安胎（《博救方》记载：水煮一两，研细，酒送服，能使死胎排出。李时珍说：与远志、龙骨等配合可养心气；与丹参、当归等配合可养心血；与地黄、枸杞等配合可养肾；与厚朴、川椒等配合可养脾；与南星、川乌等配合可祛风。多服反而使人痴呆）。辰州出产、明亮如箭镞形状的是上品（名为箭镞砂）。需细细研磨，用水飞法处理三次后使用（生用无毒，火炼则有毒，服用常致人死亡）。忌与磁石同用。畏盐水。忌食一切血类食物（郑康成注释《周礼》，将丹砂、雄黄、石胆、矾石、磁石列为五毒，古人用来攻治溃疡）。
【水银】
质地沉重，外用杀虫。
味辛、性寒，属阴毒。功效专于杀虫。治疗疮疥虮虱（性质滑利沉重，且能深入肌肉。头疮切不可用，恐怕进入经络，导致人筋骨拘挛），解金、银、铜、锡的毒性（能杀灭五金之毒），堕胎绝育。从丹砂烧炼而出。畏磁石、砒霜。遇到铅则凝固，遇到硫磺则结块，并与枣肉混合唾液研磨即可粉碎。散落在地上的，可用花椒、茶末收集。
[Mie Tuo Seng (Litharge)]
Heavy in nature, it calms fright and settles the spirit, resolves phlegm, and eliminates accumulations.
Pungent and salty, with slight toxicity. It forms by absorbing the qi of silver and lead. Its actions include sinking phlegm, calming fright, stopping bleeding, dispersing swelling, eliminating accumulations, killing parasites, treating sores and toxic swellings, healing frostbite (applied with tung oil), resolving fox odor (rubbed into the axillae with oil; alternatively, steamed bun split open, dusted with powder, and clamped under the armpit is also effective), and dyeing mustaches black. Those from silver mines are rare; currently used material is the dross from smelting silver. For medicinal use, boil for one fu period (12 hours).
[Cinnabar (Dan Sha)]
Heavy in nature, it anchors the heart, calms fright, and drains heat.
Its body is yang containing yin (contains yin mercury), taste is sweet and nature cool, color red belongs to fire (if taken and causes fright instead, it is because Li hexagram has emptiness in the center containing yin; if the taste is not bitter but sweet, it is because fire contains earth). It drains pathogenic heat from the Heart channel (the principal herb for the blood aspect of the Heart channel), anchors the heart, clears the liver, brightens the eyes, induces sweating (sweat is the fluid of the heart), calms fright, dispels wind, and wards off evil spirits (Hu Yu, a junior minister, suffered from nightmares. He met Investigator Hu Yongzhi, who said: "I used to suffer from this. A Daoist taught me to wear Ling Sha [spiritual cinnabar] and it was effective." So he untied the crimson pouch in his hair and gave it to him; that night, no more dreams). It detoxifies (suitable for fetal toxins and smallpox toxins), stops thirst, and calms the fetus (Bo Jiu Fang records: Boil 1 liang, grind fine, take with wine, can expel a dead fetus. Li Shizhen said: Combined with Yuan Zhi [Polygalae Radix], Long Gu [Fossilized Bones], etc., it nourishes Heart qi; combined with Dan Shen [Salviae Miltiorrhizae Radix], Dang Gui [Angelicae Sinensis Radix], etc., it nourishes Heart blood; combined with Di Huang [Rehmanniae Radix], Gou Qi Zi [Lycii Fructus], etc., it nourishes the Kidney; combined with Hou Po [Magnoliae Officinalis Cortex], Chuan Jiao [Zanthoxyli Pericarpium], etc., it nourishes the Spleen; combined with Nan Xing [Arisaematis Rhizoma], Chuan Wu [Aconiti Radix], etc., it dispels wind. Excessive intake causes dementia). Cinnabar produced in Chenzhou, bright as arrowheads, is superior (named Jian Zhu Sha [Arrowhead Cinnabar]). Grind finely and process three times using the water levigation method (raw use is non-toxic; calcination makes it toxic; ingestion often causes death). It is incompatible with Magnetite (Ci Shi). It fears salt water. Avoid all blood products (Zheng Kangcheng annotated Zhou Li, listing Cinnabar, Realgar, Melanterite, Alum, and Magnetite as the Five Poisons, which ancients used to attack ulcers).
[Mercury (Shui Yin)]
Heavy in nature, externally used to kill parasites.
Pungent and cold, classified as Yin poison. Its function is specifically to kill parasites. Treats scabies, tinea, lice, and nits (nature is slippery and heavy, and penetrates flesh. Do not use on head sores, lest it enter the meridians and cause stiffness and spasm of sinews and bones), detoxifies gold, silver, copper, and tin (can kill metals of the five elements), induces abortion, and sterilizes. It is obtained by roasting Cinnabar. It fears Magnetite and Arsenic Trioxide (Pi Shuang). It coagulates when meeting Lead, and binds when meeting Sulfur; it crumbles when ground with jujube pulp and saliva. Scattered material on the ground can be collected using Sichuan pepper and tea powder.