恶苦瓠、防葵、吴茱萸，大戟为之使。
苦，寒，无毒。足厥阴、少阳经药也。明目除热，益精止带。治热痢下重，祛赤目肿痛。
退
风湿。
生庐江川谷及冤句水边。二八月采皮。陕西及河阳亦有之。其木似檀，枝干皆青绿色，
叶如匙头许，大而不光，并
无花实，根似槐根，俗呼为白 树。
捶碎，去子、弦、蜜炙、酥炙，或绞汁或烧灰，各依方用。忌铁器。柏仁为使，恶
麦冬，畏空青、人参、苦参。即皂荚。
辛，咸，温，有小毒。入手太阴、阳明。祛风化痰，消肿通窍，破症杀虫，通肠坠胎。
疗胀满而消谷，除咳嗽而定
喘。开中风之噤口，熏久痢之脱肛，起风痹之死肌，解喉痹之塞满。取精汁熬膏，贴一切肿
毒，合苍术烧烟，辟诸般瘟
疫。确有明目益精之能，操治癞平疥之权。
生雍州山谷，今在处处有之。其树有极高硕者，叶如槐叶，瘦长而尖，枝间多刺，夏开
细黄
小如猪牙，一种长而肥浓，多脂而粘，一种长而瘦薄，枯燥不粘。以多脂者为佳。有不结实
者，
树凿一孔，入生铁数斤，泥封之，即结荚矣。
中风噤口痰壅，炙黄为末，每酒下一钱。（验方第一。）
口 ，为末酒下。左 敷右，右敷左。（第二。）
中暑不省，烧末，同甘草末以水煎，灌之。（第三。）
魇死，为末吹鼻。（第四。）
缢死。同上。（第五。）
水溺死，为末，布包纳下部。（第六。）
骨哽咽，为末吹鼻。（第七。）
积年疥疮，皂角入猪肚煮熟，去皂角，食肚。（第八。）
大风诸癞，炙，去皮、子，丸服。（第九。）
足疮痒甚，炙熟烙之。（第十。）
便毒痈疽，醋熬膏敷之。（十一。）
香港脚肿痛，同赤小豆末，酒醋合敷。（十二。）
身面猝肿，炙黄去皮，酒煎服。（十三。）
二便不通，烧末，饮下立通。（十四。）
痰喘咳嗽，皂角三条，去皮子，一条入巴豆十粒，香油制；一条入杏仁十粒，姜汁制；
一条入半夏十
粒，蜜制。入一处，火炙黄色，为末。每用一字，安手心，卧时姜汁调下，神效也。（十五。）
咳逆上气，唾浊不卧，皂角去皮、子，为末，蜜丸豆大，每三丸，枣膏汤下。（十六。）
一切痰气，皂荚烧末，莱菔子炒末，入姜汁、蜜丸豆大，每十丸汤下。（十七。）
妊妇一乳或两乳肿痛，作寒热内吹，皂角一条，烧枯存性，为末，酒下立消。（十八。）
Qinpi (Cortex Fraxini) is incompatible with Ku Hu (Bitter Calabash), Fang Kui (Radix Glehniae), and Wu Zhu Yu (Fructus Evodiae). Da Ji (Radix Euphorbiae) serves as its guiding herb.
It is bitter, cold, and non-toxic. It enters the Foot Jueyin Liver Meridian and Foot Shaoyang Gallbladder Meridian. It brightens the eyes, eliminates heat, benefits essence, and stops leukorrhea. It treats dysentery with tenesmus caused by heat, and dispels redness, swelling, and pain of the eyes.
It expels wind-dampness.
It grows in the valleys of Lujiang and by the waters of Yuanju. The bark is harvested in the second and eighth lunar months. It is also found in Shaanxi and Heyang. Its wood resembles sandalwood, branches and trunks are all greenish-blue, leaves are about the size of a spoon head, large but not smooth, without flowers or fruits, roots resemble those of the locust tree, commonly called Bai [missing character] tree.
It is crushed for use, or seeds and strings are removed; it may be honey-fried, su (animal fat)-fried, juiced, or burnt to ash, according to the prescription. Iron vessels should be avoided. Ba Ren (Semen Platycladi) serves as an assistant herb. It is incompatible with Mai Dong (Radix Ophiopogonis), and fears Kong Qing (Azurite), Ren Shen (Radix Ginseng), and Ku Shen (Radix Sophorae Flavescentis). This is Zao Jiao (Gleditsia Sinensis Fruit).
It is pungent, salty, warm, and slightly toxic. It enters the Hand Taiyin Lung Meridian and Hand Yangming Large Intestine Meridian. It expels wind, transforms phlegm, reduces swelling, opens orifices, breaks masses, kills parasites, unblocks the intestines, and induces abortion.
It treats distension and fullness, aids digestion, relieves cough, and calms wheezing. It opens the locked mouth in stroke, fumigates prolapsed rectum from chronic dysentery, revives dead muscle tissue in wind-bi, and resolves blockage in throat bi. Extracting the pure juice to make a paste, it is applied to all kinds of swellings and sores. Burning it together with Cang Zhu (Rhizoma Atractylodis Macrocephalae) smoke repels various epidemics. It indeed has the ability to brighten the eyes and benefit essence, and holds the power to treat leprosy and clear scabies.
It grows in the valleys of Yongzhou, and now is available everywhere. The trees can be extremely tall, leaves resemble locust leaves, slender, long, and pointed, branches have many thorns, summer brings small yellow flowers like pig's teeth. One variety is long, plump, rich in grease, and sticky; another is long, thin, dry, and non-sticky. The greasy one is superior. Some do not bear fruit; if a hole is drilled into the tree and several jin of raw iron are inserted and sealed with mud, pods will form.
For stroke with locked mouth and phlegm obstruction, roast until yellow, powderize, take 1 qian with wine. (Verified Formula 1.)
For facial paralysis, powderize and take with wine. Apply to the right side if left-sided, apply to the left side if right-sided. (2.)
For heatstroke with unconsciousness, burn to ash, mix with Licorice Root powder, decoct in water, and administer. (3.)
For death by nightmare, powderize and insufflate into the nose. (4.)
For death by hanging. Same method as above. (5.)
For drowning, powderize, wrap in cloth, and insert into the lower orifice. (6.)
For bone stuck in throat, powderize and insufflate into the nose. (7.)
For chronic scabies, cook Zao Jiao inside a pig's stomach until done, remove the Zao Jiao, and eat the stomach. (8.)
For severe leprosy, roast, remove skin and seeds, make pills, and swallow. (9.)
For severely itching foot sores, roast thoroughly and cauterize the lesion. (10.)
For inguinal abscesses and carbuncles, decoct with vinegar to make a paste and apply. (11.)
For gouty swelling and pain, mix with Adzuki Bean powder, combine with wine and vinegar, and apply. (12.)
For sudden swelling of body and face, roast until yellow, remove skin, decoct in wine, and drink. (13.)
For constipation and urinary retention, burn to ash, take with water for immediate relief. (14.)
For phlegm-wheezing and cough, take three stalks of Zao Jiao, remove skin and seeds. Add 10 beans of Ba Dou (Semina Crotonis) processed with sesame oil to one stalk; add 10 apricot kernels processed with ginger juice to another; add 10 Pinelliae Bulbs processed with honey to the third. Place together, roast over fire until yellow, powderize. Take a "yi zi" amount, place on palm, swallow with ginger juice at bedtime. Miraculous effect. (15.)
For cough with rebellious qi, thick sputum, and inability to lie down, remove skin and seeds of Zao Jiao, powderize, make honey pills the size of beans. Take 3 pills with jujube paste soup. (16.)
For all kinds of phlegm-qi stagnation, burn Zao Jiao to ash, stir-fry Radish Seeds to ash, add ginger juice and honey, make bean-sized pills. Take 10 pills with water. (17.)
For pregnant women with swelling and pain in one or both breasts, accompanied by internal blowing sensation and chills/fever, take one stalk of Zao Jiao, burn until charred but retaining nature, powderize, take with wine for immediate resolution. (18.)