含水硫酸钙。古多椎碎生用。今有用 者。然生者能表散。有解肌发汗之功。实
胜者。
主治。胃肺各种高热。腹痛胀满。伤寒下血。浊伤火灼。（石膏末调水敷）
石膏大青汤。石膏八钱。大青黄芩各三钱。葱白四茎。前胡知母栀子仁各四钱。煎服。
治妊娠伤寒。头疼壮热。肢节烦疼。
石膏牡蛎汤。石膏五钱。牡蛎一两。研末。每服方寸匕。温酒下。治衄血。石膏散。石
膏不拘多少。研极细。每服方寸匕。日再。治骨蒸外寒内热。四肢微瘦。足趺肿大。热退为
度。
按伤寒至十余日。热度高壮。发烦谵语。或下血者。当以此药为君。如心脏衰弱。更当
佐以党参黄 之类。
先以刀刮净。研粉。以牡丹皮同煮一伏时。去丹皮。用水淘过晒干用。
主治。通利。泻热。利窍。逐凝血。解燥渴。疗黄胆。水肿。香港脚吐血。衄血。金创血
出。诸疮肿毒。尤为石淋要药。
滑石散。滑石乱发灰车前子木通各一两。寒水石二两。冬葵子一合。锉散。水一斗煮五
升。时时服。治转胞。
益元散。滑石（水飞） 六两。粉甘草一两。为末。每服三钱。中暑伤寒。下痢。实热
皆
可用。通乳。猪肉面汤下。催生，香油下。
主治。明目聪耳。养肾脏。强骨。
磁石丸。磁石辰砂神曲。先以磁石巨火 。醋淬七次。研细水飞晒干。取净二两。辰砂。
研细。水飞晒干。取净一两。用生神曲末和匀。更用神曲一两。水和作饼。煮浮为度。和入
前药。蜜丸梧子大。每服十丸。加至三十丸。空腹米汤下。治瞳仁散大。视物昏昏如雾中。
或内外障。及耳鸣耳聋。
磁石酒。磁石（捣细。水淘去赤汁。）五两。天雄（炮去皮脐）山茱萸各二两。木通防
风薯
蓣菖蒲远志（去心）芎 细辛蔓荆子白茯苓干姜（炮）肉桂甘菊花各一两。熟地三两。锉细
和匀。
生绢袋盛。酒二斗。浸七日。每日任性饮之。治风邪上干于脑。或入于耳。久而不散。经络
痞塞。耳听不聪。
误吞针铁者。立以磁石枣核大。环孔线穿吞。拽之即出。
含水硫酸钙。古代多将其捣碎后生用。现在也有使用煅制的，然而生石膏能够发散表邪，具有解除肌热、发汗的功效，实际上（其功效）更胜一筹。
主治：胃部和肺部的各种高热，腹痛胀满，伤寒引起的便血，湿热损伤且火邪灼伤。（可用石膏末调水外敷患处）
石膏大青汤：石膏八钱，大青、黄芩各三钱，葱白四茎，前胡、知母、栀子仁各四钱。煎煮后服用。治疗妊娠期间患伤寒，头痛壮热，四肢关节烦痛。
石膏牡蛎汤：石膏五钱，牡蛎一两，研成粉末。每次服用方寸匕的量，用温酒送服。治疗鼻衄（鼻出血）。
石膏散：石膏不拘多少，研成极细粉末。每次服用方寸匕的量，每日两次。治疗骨蒸潮热伴外寒内热，四肢轻微消瘦，足背肿大。以热退为痊愈标准。
按语：伤寒病至十余日，热度高亢壮盛，出现心烦谵语，或者便血者，应当以此药作为主药。如果心脏功能衰弱，更应当辅助加入党参、黄芪之类的药物。
（滑石处理法）先用刀刮洗干净，研成粉末，与牡丹皮同煮一个时辰（约两小时），去掉牡丹皮，用水淘洗过后晒干使用。
主治：通利窍道，泻除热邪，通利小便窍道，驱逐瘀血凝滞，解除燥渴，治疗黄疸，水肿，脚气吐血，鼻衄，金创出血，各种疮肿毒。尤其是治疗石淋（泌尿系结石）的要药。
滑石散：滑石、乱发灰、车前子、木通各一两，寒水石二两，冬葵子一合。锉碎成散剂，用水一斗煮取五升，时时服用。治疗转胞（妊娠尿潴留）。
益元散：滑石（水飞法处理）六两，粉甘草一两，研成粉末。每次服用三钱。中暑伤寒，下痢，实热证皆可使用。通乳，用猪肉面汤送服；催生，用香油送服。
磁石丸：磁石、辰砂、神曲。先以大火煅烧磁石，用醋淬炼七次，研细后水飞法处理并晒干，取得纯净药粉二两。辰砂研细，水飞法处理并晒干，取得纯净药粉一两。用生神曲末调和均匀，再用神曲一两，加水做成饼状，煮至浮起为标准，将前两种药粉混入其中，蜂蜜泛丸如梧桐子大。每次服用十丸，加量至三十丸，空腹时米汤送服。治疗瞳仁散大，视物昏花如雾中，或内障、外障，以及耳鸣耳聋。
磁石酒：磁石（捣细，用水淘洗去赤色汁液）五两，天雄（炮制去皮脐）山茱萸各二两，木通、防风、薯蓣、菖蒲、远志（去心）、川芎、细辛、蔓荆子、白茯苓、干姜（炮制）、肉桂、甘菊花各一两，熟地黄三两。锉碎混合均匀。装入生绢袋中，用酒二斗浸泡七日。每日随意饮用。治疗风邪上犯脑部，或侵入耳部，久留不散，导致经络痞塞，听力不聪。
误吞针铁者，立即取枣核大小的磁石，用穿有孔的线串起吞下，拉动线即可取出。
Calcium sulfate hydrate. In ancient times, it was mostly crushed and used raw. Nowadays, some use calcined forms. However, raw gypsum can disperse the exterior and has the efficacy of resolving muscle heat and inducing sweating; in fact, its efficacy is superior.
Indications: Various high fevers of the stomach and lungs, abdominal pain and distension, hematochezia due to Cold Damage (Shanghan), damage by turbid dampness and burning by fire (apply gypsum powder mixed with water externally).
Gypsum and Qingdai Decoction (Shigao Daqing Tang): Gypsum 8 qian, Qingdai (Indigo Naturalis) and Huangqin (Scutellaria Root) 3 qian each, Congbai (White Part of Scallion) 4 stems, Qianhu (Peucedani Radix), Zhimu (Anemarrhenae Rhizoma), and Zhizi Ren (Gardeniae Semen) 4 qian each. Decoct and take orally. Treats Cold Damage during pregnancy, characterized by severe headache, high fever, and painful joints.
Gypsum and Oyster Shell Decoction (Shigao Muli Tang): Gypsum 5 qian, Muli (Ostreae Concha) 1 liang, ground into powder. Take one fangcun bi (a spoonful measure) per dose, washed down with warm wine. Treats epistaxis.
Gypsum Powder (Shigao San): Gypsum, amount unspecified, ground to an extremely fine powder. Take one fangcun bi per dose, twice daily. Treats bone-steaming tidal fever with external cold and internal heat, slight emaciation of the four limbs, and swelling of the dorsum of the foot. Discontinue when the fever subsides.
Note: When Cold Damage persists for more than ten days, with high and intense fever, restlessness, delirious speech, or hematochezia, this medicine should be used as the principal agent. If cardiac function is weak, it should be supplemented with Dangshen (Codonopsis Root) and Huangqi (Astragali Radix), etc.
(Preparation of Talcum): Scrape clean with a knife, grind into powder, boil together with Mudanpi (Moutan Cortex) for one shichen (two hours), remove the Moutan Cortex, wash with water, and dry in the sun for use.
Indications: Promotes free flow, clears heat, opens orifices, expels coagulated blood, relieves dryness and thirst, treats jaundice, edema, Hongkong foot (tinea pedis) with hematemesis, epistaxis, traumatic bleeding, and various sores and swellings. It is especially a key herb for treating Shi Lin (lithuria/kidney stones).
Talcum Powder (Huashi San): Huashi (Talcum), Luangui (Ash of Human Hair), Cheqianzi (Plantaginis Semen), Mutong (Akebiae Caulis) 1 liang each, Hanshui Shi (Halloysitum Rubrum) 2 liang, Dongkuizi (Malvae Semen) 1 he. Crush into coarse powder. Boil in 1 dou (approx. 10 liters) of water until reduced to 5 sheng (approx. 0.5 liters). Take frequently. Treats Zhuanbao (retention of urine during pregnancy).
Yiyuan San: Huashi (processed by water flotation) 6 liang, Fen Gancao (Licorice Root powder) 1 liang, ground into powder. Take 3 qian per dose. Suitable for summerheat-Cold Damage, dysentery, and excess heat syndromes. Promotes lactation, taken with pork broth and noodle soup; promotes labor, taken with sesame oil.
Indications: Brightens eyes and sharpens hearing, nourishes the Kidneys, strengthens bones.
Cishi Pill (Cishi Wan): Cishi (Magnetitum), Chensha (Cinnabar), Shenqu (Medicated Leaven). First, roast Cishi over strong fire, quench in vinegar seven times, grind finely, process by water flotation, and dry in the sun to obtain 2 liang of purified powder. Grind Chensha finely, process by water flotation, and dry in the sun to obtain 1 liang of purified powder. Mix evenly with powder of raw Shenqu. Use another 1 liang of Shenqu, add water to form cakes, boil until they float, then mix with the previous powders. Form pills the size of wutong seeds using honey. Take 10 pills per dose, increasing up to 30 pills, taken on an empty stomach with rice gruel. Treats dilated pupils, blurred vision as if looking through fog, internal or external visual obstructions, tinnitus, and deafness.
Cishi Wine: Cishi (crushed finely, washed with water to remove red juice) 5 liang, Tianxiong (Aconiti Lateralis Radix Praeparata, processed, skin and umbilicus removed) and Shanzhuyu (Corni Fructus) 2 liang each, Mutong, Fangfeng (Saposhnikoviae Radix), Shuyu (Dioscoreae Rhizoma), Changpu (Acori Tatarinowii Rhizoma), Yuanzhi (Polygalae Radix, heart removed), Xiong (Chuanxiong Rhizome), Xixin (Asari Radix et Rhizoma), Manjingzi (Viticis Fructus), Baifuling (Poria), Jiangjiang (Zingiberis Rhizoma Praeparatum, processed), Rougui (Cinnamomi Cortex), Ganjuhua (Chrysanthemi Flos) 1 liang each, Shudi (Rehmanniae Radix Praeparata) 3 liang. Crush finely and mix evenly. Place in a raw silk bag, soak in 2 dou of wine for seven days. Drink freely every day. Treats wind-pathogen invading the brain or entering the ears, lingering for a long time without dispersing, causing blockage of collaterals and impaired hearing.
For accidental swallowing of needles or iron: Immediately take a piece of Cishi the size of a jujube pit, thread it with a string through a hole, swallow it, and pull it out immediately.