治发背痈疽，诸般恶毒疮疖，其效如神。治疽疾，先以麦饭石膏涂付，俟其疮根脚渐收，
止于径寸大，却用神异膏贴之收口。此药随其人病深浅取效，合时不可与妇人鸡犬猫厌秽物
见之。
玄参（半两） 绵黄 （三分） 杏仁（去皮尖，切，一两） 全蛇蜕（盐水洗，焙，
半两） 男子乱发（洗净，焙干，半两） 露蜂房（净锉，一两，用有蜂儿者为妙） 黄丹
（飞罗细，五两） 真麻油（一斤）
上将麻油同发，入银铫中文武火熬，候发焦熔尽，以杏仁投入，候变黑色，用好绵滤
去滓，再将所熬清油入铫内，然后入玄参黄 ，慢火熬一二时，取出铫子，安冷炉上半时久
。火力稍息，旋入露蜂房蛇蜕二味，将柳枝急搅，却移铫于火上，不住手搅，慢火熬至紫黄
色，用绵滤过，复入清油在铫内，乘冷投黄丹，急搅片时，又移铫于火上，以文武慢火熬，
不住手柳枝搅千余转，候药油变黑色，滴于水中凝结成珠，则是膏成就。若珠子稀，再熬少
时，必候其得所，然后瓷器内收封待用，或恐偶然熬火太过稍硬，难于用，却少将蜡熬麻油
在内，以瓷器盛封，盖于甑上蒸，乘热搅调收用。膏药熬成了，须连所乘瓷器置净水中，出
火毒一昼夜，歇三日方可用，日换两次，夜换一次。熬此膏药，极难于火候，须耐烦看火紧
慢，火猛则药中火发，不特失药性，又伤人面目，救助不及，千万谨戒。膏药方甚多，不下
数十，治疽之时，神效无出于此方，千金不换，杖疮尤妙。
To treat back carbuncles and sores, as well as various malignant ulcers and boils, the efficacy is miraculous. When treating yu diseases (deep-seated suppurative infections), first apply Maifan Shi Gao (Wheat Meal Stone Powder) to the affected area. Wait until the base of the ulcer gradually recedes to a diameter of about one cun, then apply Shenyi Gao (Miraculous Ointment) to promote healing and closure. This medicine takes effect according to the depth of the patient's disease. During preparation, it must not be seen by women, chickens, dogs, cats, or other unclean substances.
Xuan Shen (Scrophulariae Radix, 0.5 liang) Mian Huang Qi (Astragali Radix, 3 fen) Xing Ren (Armeniacae Semen, peeled, core removed, sliced, 1 liang) Quan She Tui (Bombyx Batryticatus, washed with salt water, dried, 0.5 liang) Nanzhi Luang Fa (Human Hair, cleaned, dried, 0.5 liang) Lu Feng Fang (Vespa Urticans Nest, cleaned and chopped, 1 liang; preferably those containing larvae) Huang Dan (Lithargyrum, refined through fine sieve, 5 liang) Zhen Ma You (Sesame Oil, 1 jin)
First, place the sesame oil and hair together in a silver pot. Boil using alternating mild and strong heat until the hair is charred and completely melted. Then add Xing Ren (Armeniacae Semen). Once the almonds turn black, filter out the dregs using good cotton cloth. Pour the clarified oil back into the pot, then add Xuan Shen (Scrophulariae Radix) and Huang Qi (Astragali Radix). Simmer slowly for one to two shichen (4-8 hours). Remove the pot from the fire and place it on a cold stove for half an hour or more. As the heat subsides, quickly add Lu Feng Fang (Vespa Urticans Nest) and She Tui (Bombyx Batryticatus). Stir vigorously with a willow branch. Return the pot to the fire, stirring constantly with the willow branch over low heat until the mixture turns purple-yellow. Filter through cotton cloth. Pour the clear oil back into the pot. While still warm, add Huang Dan (Lithargyrum) and stir rapidly for a moment. Return the pot to the fire and simmer slowly over mild heat, stirring continuously with a willow branch for over a thousand turns. When the medicinal oil turns black and forms beads when dropped into water, the ointment is ready. If the beads are loose, boil for a short while longer until the consistency is correct. Store in porcelain containers, sealed for future use. If the ointment becomes too hard due to excessive heat, melt a small amount of wax with sesame oil in the container. Seal in porcelain, steam over a steamer, and stir while hot to adjust the consistency. After the ointment is prepared, place the porcelain container in clean water to remove "fire toxicity" for one full day and night. Let it rest for three days before use. Change the dressing twice daily and once at night. The most difficult aspect of preparing this ointment is controlling the heat. One must patiently monitor the intensity. Excessive heat causes the medicinal properties to dissipate, loses efficacy, and can severely burn the face and eyes, with no remedy available. Exercise extreme caution. There are dozens of ointment formulas, but none surpass this one in miraculous efficacy for treating yu diseases. It is worth a thousand gold pieces and is particularly effective for injuries from beating.