湿热眩晕不可当者∶酒炒大黄为末，茶清服二钱，急则治其标也。（《丹溪纂要》）
小儿脑热，常欲闭目∶大黄一分。水三合，浸一夜。一岁儿每日服半合，余者涂顶上，
干即再上。《姚和众《至宝方》）
暴赤目痛∶四物汤加熟大黄，酒煎服之。（《传信适用方》）
胃火牙痛∶口含冰水一口，以纸捻蘸大黄末，随左右搐鼻，立止。（《儒门事亲》）
风热牙痛∶紫金散∶治风热积壅，一切牙痛，去口气，大有奇效∶好大黄瓶内烧存性，
为末，
早晚揩牙，漱去。都下一家专货此药，两宫常以数千赎之，其门如市也。（《千金家藏方》）
风虫牙痛，龈常出血，渐至崩落，口臭，极效∶大黄（米泔浸软）、生地黄各旋切一片，
合定粘贴，一夜即愈，未愈再贴。忌说话，恐引入风。（《本事方》）
口疮糜烂∶大黄、枯矾等分，为末，擦之吐涎。（《圣惠方》）
鼻中生疮∶生大黄、杏仁捣匀，猪脂和涂。又方∶生大黄、黄连各一钱，麝香少许，为
末，
生油调搽。（《圣惠方》）
伤损瘀血∶《三因方》鸡鸣散∶治从高坠下，木石压伤，及一切伤损，血瘀凝积，痛不
可忍，
并以此药推陈致新。
鸡鸣时服。至晚取下瘀血，
即愈。《和剂方》∶治跌压瘀血在内胀满。大黄、当归等分，炒研，每服四钱，温酒服，取下
恶物愈。打扑伤痕，瘀血滚注，或作潮热者∶大黄末，姜汁调涂。一夜，黑者紫；二夜，紫
者白也。（《濒湖集简方》）
杖疮肿痛∶大黄末，醋调涂之。童尿亦可调。（《医方摘玄》）
金疮烦痛，大便不利∶大黄、黄芩等分，为末，蜜丸。先食水下十丸，日三服。（《千金
方》）
冻疮破烂∶大黄末，水调涂之。（《卫生宝鉴》）
汤火伤灼∶庄浪大黄生研，蜜调涂之。不惟止痛，又且灭瘢。此乃金山寺神人所传方。
（洪
迈《夷坚志》）灸疮飞蝶，因艾灸讫，火痂便退，疮内鲜肉片飞如蝶形而去，痛不可忍，是
火毒也∶大黄、朴硝各半两，为末，水服取利即愈。（张杲《医说》）
蠼 咬疮∶大黄末涂之。（《医说》）
火丹赤肿遍身者∶大黄磨水，频刷之。（《急救方》）
肿毒初起∶大黄、五倍子、黄柏等分，为末。新汲水调涂，日四、五次。（《简便方》）
痈肿 热作痛∶大黄末，醋调涂之。燥即易，不过数易即退，甚验神方也。（《肘后方》）
乳痈肿毒∶金黄散∶用川大黄、粉草各一两。为末，好酒熬成膏收之。以绢摊贴疮上，
仰卧。仍先以温酒服一大匙，明日取下恶物。（《妇人经验方》）
大风癞疮∶大黄（煨）一两，皂荚刺一两，为末。每服方寸匕，空心温酒下，取出恶毒
物如鱼脑状。未下再服，即取下如乱发之虫。取尽，乃服雄黄花蛇药。名通天再造散。（《十
便良方》）
叶
【气味】酸，寒，无毒。
【主治】置荐下，辟虱虫（《相感志》）。
For severe dizziness and vertigo caused by damp-heat that is unbearable: Use Rhizoma Rhei Preparata (prepared Rhubarb) stir-fried with wine, ground into powder, taken with clear tea infusion, two qian. This is treating the branch in acute cases. (From *Danxi Zuanyao*)
For pediatric brain heat, where the child constantly desires to close their eyes: Take one fen of Rhizoma Rhei. Soak in three he of water overnight. For a one-year-old infant, administer half a he daily; apply the remaining liquid to the top of the head. Reapply when dry. (From *Yao Hezhong's Zhibao Fang*)
For sudden red eyes and pain: Add Shu Dahuang (cooked Rhubarb) to Siwu Tang (Four Substances Decoction), decoct with wine, and take orally. (From *Chuanxin Shi Yong Fang*)
For toothache caused by stomach fire: Hold a mouthful of ice water in the mouth. Dip a paper twist into Rhizoma Rhei powder and insufflate it into the nostril corresponding to the painful side. The pain stops immediately. (From *Rumen Shiqin*)
Zijin San (Purple Gold Powder): Treats wind-heat accumulation and stagnation, all types of toothache, removes bad breath, and has great miraculous efficacy: Roast high-quality Rhizoma Rhei in a bottle until carbonized but retaining its nature, grind into powder. Rub teeth morning and evening, then rinse out. A family in Duxia specializes in selling this medicine; the imperial courts often redeem thousands of units for it, and their door is as crowded as a market. (From *Qianjin Jiacang Fang*)
For toothache caused by wind-worms, with frequent gingival bleeding, gradual tooth loss, and halitosis, extremely effective: Slice fresh Rhizoma Rhei (softened in rice wash water) and Radix Rehmanniae Recens (fresh Rehmannia Root) each into one piece. Apply them together to the affected area. Cure within one night; reapply if not cured. Avoid speaking to prevent introducing wind pathogens. (From *Benshi Fang*)
For oral ulcers and erosion: Mix equal parts of Rhizoma Rhei and Alum (Fried), grind into powder, and rub on the lesion to induce salivation. (From *Shenghui Fang*)
For sores growing in the nose: Mash fresh Rhizoma Rhei and Semen Armeniacae Amarum (bitter Apricot Seed) evenly, mix with suet (pig fat), and apply. Another method: Mix one qian each of fresh Rhizoma Rhei and Radix Scutellariae (Scutellaria Root), with a small amount of Moschus (Musk), grind into powder, and apply mixed with raw oil. (From *Shenghui Fang*)
For traumatic blood stasis: Jiming San (Cockcrow Decoction) from *Sanyin Fang*: Treats injuries from falling from heights, crushing by wood or stone, and all kinds of trauma where blood stasis condenses and accumulates, causing unbearable pain. This medicine promotes the elimination of turbid matter and generation of new tissue.
Take at cockcrow time. By evening, expelled blood stasis indicates cure.
Heji Fang: Treats distension and fullness due to internal blood stasis from falls or crush injuries. Mix equal parts of Rhizoma Rhei and Radix Angelicae Sinensis (Dong Quai), stir-fry and grind. Take four qian per dose, administered with warm wine. Expulsion of foul matter indicates cure. For contusions and bruises where blood stasis flows and gathers, or manifests as tidal fever: Mix Rhizoma Rhei powder with ginger juice and apply. After one night, black areas turn purple; after two nights, purple areas turn white. (From *Binhu Jijian Fang*)
For swelling and pain from beating wounds: Mix Rhizoma Rhei powder with vinegar and apply. Urine from young boys can also be used for mixing. (From *Yifang Zhixuan*)
For metal wounds with vexing pain and difficult defecation: Mix equal parts of Rhizoma Rhei and Radix Scutellariae (Scutellaria Root), grind into powder, and make honey pills. Take ten pills before meals with water, three times a day. (From *Qianjin Fang*)
For cracked and broken frostbite: Mix Rhizoma Rhei powder with water and apply. (From *Weisheng Baojian*)
For scalds and burns: Grind raw Rhizoma Rhei from Zhuanglang, mix with honey, and apply. It not only relieves pain but also eliminates scars. This formula was transmitted by a divine person at Jinshan Temple. (Hong Mai, *Yijian Zhi*)
Fei Die (Flying Butterfly) moxibustion sore: After moxibustion, the scab falls off, and the fresh meat inside the wound peels off like butterfly wings, causing unbearable pain due to fire toxicity: Mix half liang each of Rhizoma Rhei and Natrii Sulfas (Glauber's Salt), grind into powder, take with water to induce bowel movement, which leads to cure. (Zhang Gao, *Yi Shuo*)
For bites from earwigs: Apply Rhizoma Rhei powder. (From *Yi Shuo*)
For erysipelas with redness and swelling covering the whole body: Grind Rhizoma Rhei into water and brush frequently. (From *Ji Jiu Fang*)
For early-stage swollen toxins: Mix equal parts of Rhizoma Rhei, Fructus Garciniae (Gamboge Fruit), and Cortex Phellodendri (Phellodendron Bark), grind into powder. Apply mixed with freshly drawn cold water, four to five times a day. (From *Jianbian Fang*)
For carbuncles and swellings with heat and pain: Mix Rhizoma Rhei powder with vinegar and apply. Change when dry. It subsides after only a few changes; it is a very effective miraculous formula. (From *Zhouhou Fang*)
Jinhuang San (Golden Yellow Powder) for breast abscesses and swollen toxins: Use one tael each of Sichuan Rhizoma Rhei and Glycyrrhizae Radix et Rhizoma (Licorice Root). Grind into powder, boil with good wine to form a paste, and store. Spread on silk and apply to the sore while lying supine. First, take one large spoonful of warm wine orally; expel foul matter the next day. (From *Funren Jingyan Fang*)
For leprosy-like sores caused by severe wind: One tael of roasted Rhizoma Rhei and one tael of Gleditsiae Spina (Locust Thorn), ground into powder. Take one fangcun bi per dose, swallowed with warm wine on an empty stomach. Expels toxic matter resembling fish brains. If not expelled, take again to expel worms resembling tangled hair. After complete expulsion, take Xionghui Huangshe Yao (Male Flower Golden Snake Medicine). Named Tongtian Zaizao San (Sky-Penetrating Rebirth Powder). (From *Shibian Liangfang*)
Leaves
[Flavor and Nature]: Sour, cold, non-toxic.
[Indications]: Placed under mats to repel lice (From *Xianggan Zhi*).