（音鱼觐切。《唐本草》）
【释名】人中白。时珍曰∶滓淀为 ，此乃人溺澄下白 也。以风日久干者为良。入药
并以瓦 过用。
【气味】咸，平，无毒。大明曰∶凉。
【主治】鼻衄，汤火灼疮（《唐本》）。烧研，主紧唇疮（苏恭）。治传尸热劳，肺痿，心
膈热，羸瘦渴疾（大明）。降火，消瘀血，治咽喉口齿生疮疳 ，
珍）。
【发明】震亨曰∶人中白，能泻肝火、三焦火并膀胱火，从小便中出，盖膀胱乃此物之
故道也。时珍曰∶人中白，降相火，消瘀血，盖咸能润下走血故也。今人病口舌诸疮用之有
效，降火之验也。张杲《医说》云∶李七，常苦鼻衄，仅存喘息。张思顺用人中白散，即时
血止。又延陵镇官曾棠鼻血如倾，白衣变红，头空空然。张用人中白药治之即止，并不再作。
此皆散血之验也。
【附方】旧二，新十三。大衄久衄∶人中白一团鸡子大，绵五两，烧研。每服二钱，温
水服。（《圣济总录》）诸窍出血∶方同上。鼻衄不止，五七日不住者∶人中白，新瓦 干，
入麝香少许，温酒调服，立效。（《经验方》）肤出汗血∶方同上。偏正头痛∶人中白、地龙
（炒）等分为末，羊胆汁丸芥子大。每新汲水化一丸，注鼻中 之。名一滴金。（《普济方》）
水气肿满∶人尿，煎令可丸。每服一小豆大，日三服。（《千金方》）香港脚成漏∶跟有一孔，
深半寸许，其痛异常。用人中白 ，有水出，滴入疮口。（戴原礼《证治要诀》）小儿霍乱∶
尿滓末，乳上服之良。（《千金方》）鼻中息肉∶人中白瓦焙，每温汤服一钱。（《朱氏集验
方》）痘疮倒陷∶腊月收人中白，火 为末。温水服三钱，陷者自出。（《儒门事亲》口舌生
疮∶溺桶 七分，枯矾三分，研匀。有涎拭去，数次即愈。（《集简方》）小儿口疳∶人中白
（）、黄柏（蜜炙焦）为末等分，入冰片少许，以青布拭净，掺之，累效。（陆氏《经验方》）
走马牙疳∶以小便盆内白屑，取下入瓷瓶内，盐泥固济， 红研末，入麝香少许贴之。此汴
梁李提领方也。又方∶用妇人尿桶中白垢（火 ）一钱，铜绿三分，麝香一分，和匀贴之，
尤有神效。痘疹烦热∶人中白或老粪缸白垢，洗净研末。每白汤或酒服二钱。（《痘疹便览》）
方）
(Pronounced "yu jin qie". From *Tang Bencao* [Compendium of Materia Medica of the Tang Dynasty].)
**Names**: Renzhongbai (Human Urine Deposit). Li Shizhen stated: The sediment is called " ", which is the white substance precipitated from clarified human urine. The best quality is that which has been dried by wind and sun exposure for a long time. For medicinal use, it must be calcined over a tile before application.
**Flavor and Properties**: Salty, neutral, non-toxic. Chen Zangqi stated: Cool in nature.
**Indications**: Epistaxis (nosebleed), burns and scalds (*Tang Bencao*). Calcined and ground into powder, it treats tight-lipped sores (Su Gong). It treats transmissive consumption with heat and wasting, lung atrophy, heat in the heart and diaphragm, emaciation, and thirst diseases (Chen Zangqi). It descends fire, resolves blood stasis, and treats sores and cancrum oris in the throat, mouth, and teeth (Li Shizhen).
**Analysis**: Zhu Zhenheng stated: Renzhongbai can purge Liver Fire, Sanjiao Fire, and Bladder Fire, excreting them via urination, as the Bladder is the natural pathway for this substance. Li Shizhen stated: Renzhongbai descends Ministerial Fire and resolves blood stasis, because salty flavors moisten and direct downwards, entering the Blood level. Currently, its use in treating various sores of the mouth and tongue is effective, verifying its fire-descending property. Zhang Gao recorded in *Yi Shuo*: Li Qi suffered frequently from epistaxis, retaining only faint breath. Zhang Sishun treated him with Renzhongbai Powder, stopping the bleeding immediately. Another case involved Zeng Tang, an official from Yanling Town, whose nose bled profusely, staining his white clothes red, leaving him feeling empty-headed. Dr. Zhang treated him with Renzhongbai medicine, stopping the bleed with no recurrence. These are all verifications of blood-resolving properties.
**Attached Prescriptions**: Two old prescriptions, thirteen new ones. Severe or chronic epistaxis: One egg-sized piece of Renzhongbai and five liang of cotton paper, calcined and ground. Take two qian each time, washed down with warm water. (*Shengji Zonglu*) Bleeding from orifices: Same prescription as above. Incessant epistaxis lasting five to seven days: Renzhongbai, dried on a new tile, mixed with a small amount of Moschus (She Xiang), taken with warm wine for immediate effect. (*Jingyan Fang*) Hematohidrosis (sweating blood): Same prescription as above. Migraine or frontal headache: Equal parts Renzhongbai and Earthworm (Di Long, stir-fried), ground into powder, formed into pills the size of mustard seeds with sheep bile. Dissolve one pill in fresh drawn water and instill into the nostril. Named "One Drop of Gold". (*Pujifang*) Edema and distension: Human urine, boiled until it can form pills. Take a size of a small bean each time, three times daily. (*Qianjin Fang*) Tinea pedis forming fistulas: A hole appears on the heel, about half cun deep, with extreme pain. Use calcined Renzhongbai; when water exudes, drip it into the wound. (Dai Yuanli, *Zhengzhi Yaojue*) Infantile cholera: Powdered urine sediment, taken with breast milk for good effect. (*Qianjin Fang*) Nasal polyps: Renzhongbai baked on a tile, take one qian with warm water each time. (*Zhu Shi Jiyan Fang*) Inverted chickenpox/rash: Collect Renzhongbai in the twelfth lunar month, calcine and grind into powder. Take three qian with warm water; inverted lesions will naturally erupt. (*Rumen Shiqin*) Mouth and tongue sores: Seven parts toilet bowl scale and three parts Alum (Ku Fan), ground evenly. Wipe away saliva, apply several times until healed. (*Jijian Fang*) Infantile oral cancrum: Equal parts Renzhongbai (calcined) and Phellodendri Cortex (Huang Bo, honey-fried until charred), mixed with a little Borneol (Bing Pian). Clean the area with a green cloth, sprinkle powder, repeatedly effective. (Lu Shi, *Jingyan Fang*) Rapid-progressing cancrum oris: Scrape white scales from the inside of a urinal, place in a porcelain bottle, seal with salt mud, calcine until red, grind into powder, add a little Moschus, and apply to the lesion. This is the formula of Li Tingling from Bianliang. Another formula: One qian of white scale from women's urinals (calcined), three fen of Verdigris (Tong Lv), one fen of Moschus, mix evenly and apply, especially efficacious. Restlessness and heat in rash: Renzhongbai or white scale from old fecal pits, washed clean and ground. Take two qian with plain water or wine each time. (*Douzhen Bianlan*)