恶桑螵蛸、桔梗、茯苓、萆 。
苦，寒，微咸，无毒，性燥。足太阴、阳明药也，兼入手太阴、阳明。除一切风痹，治
诸般
黄胆。女子阴肿，小儿惊痫，两足肌死，四肢筋弱。头痛目痛之时疾，风疮疥癞之旧 。
鼠已破，出脓血，煎服，当吐若鼠子也。（验方第一。）
产后中风，人虚不可服他药，一味白鲜皮，新水煎服。（第二。）
生上谷及兖州等处。二月采。今河中、江宁、滁州、润州皆有之，以蜀中者为良。苗高
尺余
，茎青，叶稍白，如槐，亦似茱萸。四月开花淡紫色。根似小蔓荆，皮黄白而心实。
炒用。本名玄胡索，宋时避真宗讳，改玄为延。今后避庙讳，改玄为元也。
辛，温，甘，苦，无毒，性浮。入手足太阴、厥阴四经。兼疗气痛，最治血凝，腹中块
结，脐疝痛。调妇人月经，
经瘀经滞，除产后血积、血运、血冲。驱风治气，兼止腰膝之猝痛。活血止痛，兼利便溺之
猝闭。操行血利气之权，兼
通经坠胎之能。血热气虚者勿用。
生奚国。根如半夏，色黄。今二茅山西上龙洞种之。寒露后栽之，立春后生苗，叶如竹
叶，
起。
心痛欲死，每酒下三钱末。（验方第一。）
下痢腹痛，垂危，诸方不止，米饮下三钱末。（第二。）
偏身痛莫忍，同当归、桂心末，每酒下三钱。妇科宜之。（第三。）
鼻衄不止，为末，绵包塞耳，左右右左。（第四。）
尿血，末服。（第五。）
小便不通，同苦楝子末，白汤入香油少许下。（第六。）
膜外气痛及气块，为末，熟猪胰蘸食之。（第七。）
热厥心痛，时发止，同金铃子末酒下。（第八。）
经不调，腹刺痛，同当归、陈皮酒丸服。（第九。）
产后诸病，恶露未尽。一切，为末酒下。（第十。）
小儿盘肠气痛，同小茴末下。（十一。）
疝气危急，同全蝎末下。少腹积痛。（十二。）
冷气腰痛。同上第三。（十三。）
坠车落马，筋骨痛，为末豆淋酒下。（十四。）
Contraindicated for use with Sangpiaoxiao (Mantis Egg Case), Jiegeng (Platycodon Root), Fuling (Poria), and Bibi (Dioscorea Hypoglauca Rhizome).
**Bai Xian Pi (Dictamni Cortex)**
Bitter, cold, slightly salty, non-toxic, drying in nature. It enters the Foot-Taiyin Spleen Meridian and Foot-Yangming Stomach Meridian, and also connects to the Hand-Taiyin Lung Meridian and Hand-Yangming Large Intestine Meridian. It eliminates all types of wind-bi syndrome (painful obstruction due to wind) and treats various forms of Huangdan (jaundice). It is used for vulvar swelling in women, infantile convulsions, atrophy/necrosis of muscles in both legs, and weakness of tendons in the four limbs. It treats epidemic diseases presenting with headache and eye pain, as well as chronic skin conditions such as wind sores, scabies, and leprosy.
*(Verification Formula 1: For a ruptured shu-lou [scrofula/abscess] discharging pus and blood, decoct Bai Xian Pi and take orally; it may induce vomiting of material resembling a small mouse.)*
For postpartum wind-stroke, if the patient is too deficient to tolerate other medicines, use solely Bai Xian Pi, decocted in fresh water. *(Formula 2)*
It grows in Shanggu and Yanzhou areas. Harvested in February. Currently found in Hezhong, Jiangning, Chuzhou, and Runzhou, with those from Shu (Sichuan) considered superior. The herb has stems over one chi tall, green in color; leaves are slightly white, resembling Sophora leaves or Euodia leaves. It bears pale purple flowers in April. The root resembles small Vitex fruit, with yellowish-white bark and solid pith.
Use after stir-frying. Originally named Xuanhusuo. In the Song Dynasty, to avoid the personal name taboo of Emperor Zhenzong (Zhao Heng), "Xuan" was changed to "Yan". Later, to avoid ancestral temple taboos, "Xuan" was changed to "Yuan".
**Yan Hu Suo / Yuan Hu (Corydalis Rhizome)**
Acrid, sweet, bitter, warm, non-toxic, floating in nature. It enters the Hand-Taiyin Lung Meridian, Hand-Yangming Large Intestine Meridian, Foot-Taiyin Spleen Meridian, and Foot-Jueyin Liver Meridian. It treats qi stagnation pain, and is most effective for blood stasis and coagulation, abdominal masses, and umbilical hernia pain. It regulates menstruation in women, treating menstrual stasis and obstruction, and eliminates postpartum blood accumulation, syncope due to blood loss, and blood rushing upward. It dispels wind, regulates qi, and stops sudden pain in the waist and knees. It invigorates blood, stops pain, and relieves sudden urinary retention. It holds the authority over moving blood and promoting qi circulation, and possesses the ability to unblock meridians and induce abortion. It should not be used by patients with blood heat and qi deficiency.
It grows in Xi State. The root resembles Pinellia ternata, yellow in color. Currently cultivated in Longdong on the upper slopes of Ermao Mountain. Planted after Cold Dew, sprouting after Start of Spring. Leaves resemble bamboo leaves, standing erect.
For severe heart pain, take 3 qian of powder with wine. *(Verification Formula 1)*
For dysentery with abdominal pain, critical condition, unresponsive to other formulas, take 3 qian of powder with rice water. *(Formula 2)*
For unbearable pain affecting half the body, combine with Danggui (Angelica Sinensis) and Guixin (Cinnamon Twig) powders, take 3 qian with wine. Suitable for gynecology. *(Formula 3)*
For persistent epistaxis, make into powder, wrap in cotton, and insert into the ear opposite the bleeding nostril (left nose bleed -> right ear; right nose bleed -> left ear). *(Formula 4)*
For hematuria, take powder internally. *(Formula 5)*
For urinary retention, combine with Kulianzi (Melia Toosendan Fruit) powder, take with plain water and a few drops of sesame oil. *(Formula 6)*
For qi pain outside the membrane and qi masses, make into powder and eat dipped in cooked pig pancreas. *(Formula 7)*
For heart pain due to heat-jue, intermittent, combine with Jinlingzi (Chloranthus Spicatus Fruit) powder and take with wine. *(Formula 8)*
For irregular menstruation and stabbing abdominal pain, combine with Danggui and Chenpi (Citrus Peel), form pills with wine, and take. *(Formula 9)*
For various postpartum conditions where lochia is not fully expelled, for all related symptoms, take powder with wine. *(Formula 10)*
For infantile intestinal colic/qi pain, combine with Xiaohui (Fennel Seed) powder and take. *(Formula 11)*
For critical hernia qi, combine with Quanxie (Scorpion) powder and take. For accumulation pain in the lower abdomen. *(Formula 12)*
For lumbar pain due to cold qi. Same as Formula 3 above. *(Formula 13)*
For bone and tendon pain from falling from carts or horses, take powder with Doulinjiu (wine soaked soybeans). *(Formula 14)*