糯米泔浸，蒸晒用。元参为使，恶贝母、菟丝、漏芦，反藜芦，野槐根也。
苦，寒，无毒，性沉。足厥阴、太阳、少阴药也。补阴益精，明目止泪。治湿热血痢，
住肠
风血泻。兼疗大风疥癞，最除痈肿阴蚀。溺赤疸黄之疾，积聚症瘕之 。清乙木而杀虫，利
壬水而泄热。肝肾虚无热者勿用。近道处处有之。叶与槐相似。
赤白带同蛎粉各两，猪肚煮烂，捣丸豆大，每酒下百丸。（验方第一。）
汤火伤，香油合末敷之。（第二。）
瘰 结核，四两末，牛膝汤丸豆大，每三十丸。（第三。）
下部漏疮，水煎日日洗之。（第四。）
热病狂奔，蜜丸服，薄荷汤下，水煎亦可。（第五。）
伤寒结胸，天行疾，胸满壮热，醋煎一两服，取吐且取汗。（第六。）
谷疸食劳，头旋心怫郁不安，由失饥大食，胃气冲熏所致，用二两，胆草一合，牛胆丸
服十丸。（第七。）
小儿身热，煎洗之。（第八。）
热毒足肿，作痛欲脱，酒煎渍之。（第九。）
梦遗食减，苦参三两，白术五两，蛎粉四两，猪肚一个，沙釜煮烂，捣丸服。（第十。）
中恶心痛，苦酒煎服。（十一。）
饮食中毒，上方吐之。（十二。）
血痢不止，炒焦丸服。（十三。）
脱肛，同五倍子、陈壁土煎洗之，以木贼末敷之。（十四。）
齿缝血，苦参一两，枯矾一钱，为末揩之。（十五。）
鼻疮脓臭，有虫也。苦参、枯矾、生地煎汁滴之。（十六。）
遍身生疮，肺热也。米汤丸服。（十七。）
遍身风疹痒痛，为末一两，皂角二两，取汁熬膏丸服。（十八。）
热毒风疮疥癣，一斤，枳壳六两，丸服酒下。（二十。）
疥癞痛痒，黄水及大风手足烂，苦参二斤，芥穗一斤，丸服。（二十一。）
鼠 恶疮，苦参二斤，露蜂房二两，曲二斤，水三斗，渍之去渣，入黍米酿熟饮之。（二
十二。）
糯米泔水浸泡，蒸熟后晒干使用。以玄参为引经药，忌与贝母、菟丝子、漏芦同用，与藜芦相反，这是野槐根（即苦参）。
味苦，性寒，无毒，性质沉降。是入足厥阴肝经、足太阳膀胱经、足少阴肾经的药物。能补益阴精，明目止泪。治疗湿热引起的血痢，制止肠道风邪导致的血泻。兼治大麻风、疥疮、癞病，最能消除痈肿和阴部蚀烂。对于小便赤黄、黄疸等疾病，以及积聚症瘕等有疗效。能清泄乙木（肝）之热而杀虫，通利壬水（膀胱/肾）而泄热。肝肾虚而无热者禁用。附近各地都有生长。叶子与槐树相似。
【方剂一】赤白带下：取苦参和牡蛎粉各一两，用猪肚煮烂，捣碎制成如豆大的丸药，每次用酒送服一百丸。（验方第一。）
【方剂二】汤火烫伤：将苦参研成末，与香油调和敷在患处。（第二。）
【方剂三】瘰疬结核：取苦参四两研末，用牛膝汤泛丸如豆大，每次服三十丸。（第三。）
【方剂四】下部漏疮：用水煎煮，每日清洗患处。（第四。）
【方剂五】热病狂躁狂奔：制成蜜丸服用，用薄荷汤送下，也可用水煎服。（第五。）
【方剂六】伤寒结胸，时行瘟疫急症，胸部胀满，高热：醋煎一两服用，使其既吐又汗出。（第六。）
【方剂七】谷疸因饮食劳倦所致，头晕，心中烦闷不安，这是由于饥饿后暴饮暴食，胃气冲逆熏蒸所致，用苦参二两，龙胆草一合，用牛胆汁泛丸，每次服十丸。（第七。）
【方剂八】小儿身体发热：煎汤外洗。（第八。）
【方剂九】热毒导致足部肿胀，疼痛欲脱：用酒煎煮浸泡患处。（第九。）
【方剂十】梦遗，食欲减退：苦参三两，白术五两，牡蛎粉四两，一个猪肚，用沙锅煮烂，捣碎制成丸药服用。（第十。）
【方剂十三】血痢不止：炒焦后制成丸药服用。（第十三。）
【方剂十四】脱肛：与五倍子、陈壁土一起煎汤清洗，再用木贼末外敷。（第十四。）
【方剂十五】齿缝出血：苦参一两，枯矾一钱，研成末擦拭患处。（第十五。）
【方剂十六】鼻疮流脓发臭，有虫：苦参、枯矾、生地黄煎汁滴入鼻腔。（第十六。）
【方剂十八】遍身风疹瘙痒疼痛：苦参研末一两，皂角二两，取汁熬膏制丸服用。（第十八。）
【方剂二十】热毒风疮疥癣：苦参一斤，枳壳六两，制丸服用，酒送下。（第二十。）
Soak in rice washing water, steam until cooked, then sun-dry for use. It acts as a guiding herb with Scrophulariae Radix (Xuanshen, 玄参). It is incompatible with Fritillariae Bulbus (Beimu, 贝母), Cuscutae Semen (Tusizi, 菟丝子), and Euphorbiae Humifusae Herba (Loulu, 漏芦); it is chemically antagonistic to Veratrum Rhizoma (Lilu, 藜芦). This refers to the root of Sophora flavescens (Kushen, 苦参), also known as wild locust root.
Bitter in taste, cold in nature, non-toxic, with a sinking property. It enters the Foot Jueyin Liver Meridian, Foot Taiyang Bladder Meridian, and Foot Shaoyin Kidney Meridian. It tonifies Yin and benefits essence, brightens the eyes, and stops tearing. It treats bloody dysentery caused by damp-heat, and arrests bloody diarrhea due to intestinal wind pathogens. It also treats leprosy, scabies, and other severe skin diseases; it is particularly effective in eliminating carbuncles, sores, and genital ulcers. It addresses conditions such as dark urine, jaundice, and abdominal masses (Jiju Zhengjia, 积聚症瘕 - accumulations and masses). It clears heat from the Wood element (Liver) and expels parasites; it promotes urination through the Water element (Kidney/Bladder) and drains heat. It should not be used for patients with Liver and Kidney deficiency without heat signs. It grows abundantly in various regions nearby. Its leaves resemble those of the locust tree.
[Formula 1] For leukorrhea (white and red discharge): Take one tael each of Kushen (Sophorae Flavescentis Radix) and Ostreae Concha (Limfen, 牡蛎粉). Boil them in a pig stomach until tender, mash into pills the size of beans. Take 100 pills per dose with wine. (Verified Formula No. 1.)
[Formula 2] For burns and scalds: Mix Kushen powder with sesame oil and apply topically. (No. 2.)
[Formula 3] For scrofula and tuberculous lymphadenitis: Take four taels of Kushen powder, make pills the size of beans using Achyranthis Bidentatae Decoction (Niuxi Tang, 牛膝汤). Take 30 pills per dose. (No. 3.)
[Formula 4] For fistulas in the lower body: Decoct in water and wash the affected area daily. (No. 4.)
[Formula 5] For manic狂奔 (wild running) due to febrile disease: Make honeyed pills. Take with Mint Decoction (Bohe Tang, 薄荷汤); decocting in water is also acceptable. (No. 5.)
[Formula 6] For Cold Damage (Shanghan, 伤寒) with chest constraint, acute epidemic diseases, chest fullness, and high fever: Decoct one tael in vinegar. Induce both vomiting and sweating. (No. 6.)
[Formula 7] For grain jaundice caused by dietary irregularity and overwork, characterized by dizziness, mental restlessness, and depression, resulting from gastric qi rebelling after prolonged fasting followed by excessive eating: Use two taels of Kushen and one he of Gentianae Radix (Dancao, 胆草). Make pills using bovine gallbladder bile. Take 10 pills per dose. (No. 7.)
[Formula 8] For pediatric fever: Decoct and wash externally. (No. 8.)
[Formula 9] For toxic heat causing foot swelling, pain, and sensation of impending detachment: Decoct in wine and soak the affected area. (No. 9.)
[Formula 10] For nocturnal emission and reduced appetite: Three taels of Kushen, five taels of Atractylodis Macrocephalae Rhizoma (Baizhu, 白术), four taels of Ostreae Concha, and one pig stomach. Boil in a clay pot until tender, mash, and make pills. (No. 10.)
[Formula 11] For sudden evil invasion causing heart and abdominal pain: Decoct in vinegar and take orally. (No. 11.)
[Formula 12] For food poisoning: Use the above formula (Formula 11) to induce vomiting. (No. 12.)
[Formula 13] For persistent bloody dysentery: Stir-fry until charred, make pills, and take. (No. 13.)
[Formula 14] For rectal prolapse: Decoct with Terminaliae Chebulae Fructus (Wubeizi, 五倍子) and old wall soil (Chenbitu, 陈壁土) for washing. Apply Equiseti Herba (Muzei, 木贼) powder topically. (No. 14.)
[Formula 15] For bleeding from gum margins: One tael of Kushen, one qian of Alum (Kufan, 枯矾). Grind into powder and apply to rub the gums. (No. 15.)
[Formula 16] For nasal sores with purulent discharge and foul odor, indicating parasitic infestation: Decoct Kushen, Alum, and Rehmanniae Radix (Shengdi, 生地) and drip the juice into the nose. (No. 16.)
[Formula 17] For sores all over the body, attributed to Lung heat: Make pills using rice soup. (No. 17.)
[Formula 18] For generalized wind-rash with itching and pain: One tael of Kushen powder, two taels of Gleditsiae Sinensis Spina (Zaojiao, 皂角). Extract the juice, boil into an ointment, and make pills. (No. 18.)
[Formula 20] For toxic heat wind-sores, scabies, and tinea: One jin of Kushen, six taels of Aurantii Fructus (Zhike, 枳壳). Make pills and take with wine. (No. 20.)
[Formula 21] For scabies, leprosy, itching, weeping yellow fluid, and severe leprosy causing hand and foot ulceration: Two jin of Kushen, one jin of Schizonepetae Spica (Jiesui, 芥穗). Make pills. (No. 21.)
[Formula 22] For rat-hole sores (chronic fistulous tracts): Two jin of Kushen, two taels of Vespa Nidus (Lufengfang, 露蜂房), two jin of Medicated Leaven (Qu, 曲). Soak in three dou of water, strain, add Setaria Italica (Shumi, 黍米), ferment until ripe, and drink. (No. 22.)