（隰草）入肝除瘀凝滞杀虫
鹤虱（专入肝）。气味苦平。（即杜牛膝子。）功专入肝除逆。故凡一身痰凝气滞。得此
苦以疏
泄。则痰气顿解。而虫自无安身之地矣。况虫得苦则伏。如小儿蛔啮腹痛。用以鹤虱研末。
纳于肥肉汁中投服。其虫自下。（虫痛面白唇红。时作时止。）非其虫因苦逐。曷克有是。
但药肆每以胡萝卜子代充。不可不辨。（千金方曰。人腹生虫。大率有九。一曰伏虫。长四
分。为群虫之主。二曰蛔虫。长一尺。生发多。则贯心而杀人。三曰白虫。即寸虫。长一寸
。子孙相生。其母转大。长至四五丈。亦能杀人。四曰肉虫。状如烂杏。令人烦满。五曰肺
虫。状如蚕。令人咳嗽。六曰胃虫。状如虾蟆。令人呕吐胃逆喜哕。七曰弱虫。又名膈中。
状如瓜瓣。令人多唾。八曰赤虫。状如生肉。令人长鸣。九曰蛲虫。形极微细。有如菜虫。
居于广肠之间。多则为痔。剧则为癞。因人疮痍。即生痈疽癣 。 疥龋虫。无所不为。）
（寓木）除热消积杀虫
雷丸（专入胃）。味苦而咸。性寒小毒。本竹余气所结。得霹雳而生。故有雷丸之号。
功专入
胃
除热。消积化虫。故凡湿热内郁。癫痫狂走。汗出恶风。虫积殆甚。腹大气胀。虫作人声者
。服之即能有效。（虫在肝。令人恐怖。眼中赤壅。虫在心。令人心烦发燥。在脾使人劳热
。四肢肿急。在肺使人咳嗽气喘。）以其秉性纯阴。兼味至苦。感其霹雳。故能去其邪魅也
。所云惟利男子。不利妇人。亦以妇人属阴。故于阴物不宜耳。（志曰。久服令人阴痿。）究
之果属肾热。亦又何碍？但无虫积。不得妄用。皮黑肉白者良。若肉紫黑者杀人。甘草水浸
一宿。酒拌蒸。或泡用。浓朴芫花为使。恶葛根。（绣按纲目述杨 腹有小声应人。后读至
本草雷丸不应。知为应声虫害。其说不无可疑。）
（隰草类药材）入肝经，能消除瘀血凝滞，杀灭寄生虫。
鹤虱（专入肝经）。气味苦、平。（即杜牛膝的种子。）功效专于入肝经，消除气逆。所以凡是全身痰湿凝结、气机阻滞的情况，凭借它的苦味来疏通泄降，那么痰气和郁滞就会立刻解除，而寄生虫自然就没有安身之地了。况且寄生虫遇到苦味药物就会潜伏不动，例如小儿蛔虫咬噬引起的腹痛，使用鹤虱研成粉末，混入肥肉汁中服用，虫子自然会排出体外。（表现为虫痛时面色苍白、嘴唇红润，疼痛时作时止。）如果不是因为苦味驱逐了虫子，怎么会有这样的效果呢？但是药店里常用胡萝卜子来冒充鹤虱，这一点不可不加以辨别。（《千金方》说：人腹中生的虫子，大体上有九种。一是伏虫，长四分，是群虫的首领。二是蛔虫，长一尺，如果生长过多，会贯穿心脏导致死亡。三是白虫，也就是寸白虫，长一寸，子孙相生，母虫变得更大，长达四五丈，也能致人死亡。四是肉虫，形状像烂杏，让人烦闷胀满。五是肺虫，形状像蚕，让人咳嗽。六是胃虫，形状像蛤蟆，让人呕吐、胃气上逆、喜欢打嗝。七是弱虫，又名膈中虫，形状像瓜瓣，让人多唾液。八是赤虫，形状像生肉，让人腹部长期鸣响。九是蛲虫，形体极其微小，像菜虫一样，居住在广肠之间，多了会导致痔疮，严重了会导致癞疮。此外还有因人体疮疡伤口而生出的痈疽癣疥龋齿虫等，无所不为。）
（寓木类药材）清除热邪，消食积，杀灭寄生虫。
雷丸（专入胃经）。味道苦、咸，性寒，有小毒。本是竹子的余气凝结而成，借助雷电之力而生，所以有“雷丸”这个名字。功效专入胃经，清除热邪，消除积滞，化杀虫体。所以凡是湿热内郁，癫痫狂躁奔走，出汗怕风，虫积非常严重，腹部胀大如鼓，甚至听到肚子里有虫子发出人声的情况，服用它就能见效。（虫子在肝脏，让人产生恐惧感，眼睛红肿充血；虫子在心，让人心烦意乱、烦躁不安；在脾，使人劳累发热，四肢肿胀拘急；在肺，使人咳嗽气喘。）因为它秉性纯阴，兼有极苦的味道，又感应了雷电之气，所以能够去除体内的邪祟。有人说它只利于男子，不利于妇人，也是因为妇人属阴，所以不适合用这种阴性的药物。（《本草志》说：长期服用会导致阳痿。）但如果仔细推敲，如果是肾热导致的病症，又有什么妨碍呢？只是如果没有虫积，不得随意使用。以皮黑肉白的为佳品，如果肉色紫黑则有毒，会杀人。用法是用甘草水浸泡一夜，或用酒拌蒸，或者泡服。常与浓朴、芫花配伍使用。畏葛根。（黄宫绣按：《纲目》记载杨晞腹中有小声音回应人的情况，后来读到《本草》中关于雷丸的记载却无效，才知道那是应声虫害，这种说法并非没有可疑之处。）
(Xi Cao category herbs) Enter the Liver meridian, eliminate blood stasis and stagnation, and kill parasites.
Ningshi (specifically enters the Liver meridian). Flavor: bitter; Nature: neutral. (It is the seed of *Achyranthes bidentata*, also known as Du Niuxi.) Its efficacy specifically targets the Liver meridian to resolve qi rebellion. Therefore, for any condition involving phlegm coagulation and qi stagnation throughout the body, its bitter flavor helps to diffuse and drain, causing the phlegm and qi to resolve instantly, leaving no place for parasites to reside. Moreover, parasites tend to subside when encountering bitter substances. For example, in cases of abdominal pain caused by roundworms biting in children, Ningshi is ground into powder, mixed with fat meat juice, and administered orally, after which the worms are naturally expelled. (Symptoms include pale complexion with red lips during worm-induced pain, with pain occurring intermittently.) If not for the expulsion of worms by bitter agents, how could such results be achieved? However, pharmacies often substitute Carrot seeds (*Daucus carota* seeds) for Ningshi, a distinction that must not be overlooked. (The *Qianjin Fang* states: Parasites growing in the human abdomen generally fall into nine categories. 1. Fu Chong (Hidden Worm), four fen long, the leader of all worms. 2. Hui Chong (Roundworm), one chi long; if excessive, it pierces the heart and causes death. 3. Bai Chong (White Worm), also known as Cun Chong, one cun long; offspring multiply, and the mother grows larger, reaching four or five zhang, also capable of causing death. 4. Rou Chong (Flesh Worm), resembling rotten apricots, causing irritability and fullness. 5. Fei Chong (Lung Worm), resembling silkworms, causing coughing. 6. Wei Chong (Stomach Worm), resembling toads, causing vomiting, stomach qi rebellion, and hiccups. 7. Ruo Chong (Weak Worm), also called Ge Zhong, resembling melon seeds, causing excessive salivation. 8. Chi Chong (Red Worm), resembling raw meat, causing chronic abdominal borborygmi. 9. Tiao Chong (Pinworm), extremely minute like vegetable worms, residing between the broad intestines; numerous infestations cause hemorrhoids, severe cases lead to leprosy-like conditions. Additionally, there are worms arising from skin sores, causing carbuncles, ulcers, tinea, scabies, and dental caries, engaging in various harmful activities.)
(Yu Mu category herbs) Clear heat, reduce accumulation, and kill parasites.
Leiwuan (Omphalia lapidescens / Thunderball Fungus) (specifically enters the Stomach meridian). Flavor: bitter, salty; Nature: cold; Slight toxicity. It is formed from the residual qi of bamboo, generated through the power of thunder, hence the name "Thunderball." Its efficacy specifically enters the Stomach meridian to clear heat, resolve accumulation, and transform/dissolve parasites. Therefore, for conditions involving internal depression of damp-heat, epilepsy with manic running, sweating with aversion to wind, severe parasitic accumulation, abdominal distension resembling drum, or even hearing human voices from intestinal worms, administration yields effective results. (Worms in the Liver cause fear and eye congestion/redness; worms in the Heart cause mental restlessness and dryness/irritability; worms in the Spleen cause laborious fever, swollen and stiff limbs; worms in the Lung cause coughing and wheezing.) Because it possesses a purely yin nature, combined with a very bitter taste, and has been influenced by thunder energy, it can dispel evil pathogens. Some claim it benefits men but harms women because women belong to yin, making them unsuitable for such yin-natured substances. (Bencao Zhi states: Long-term use causes impotence.) Upon investigation, if the condition is indeed due to Kidney heat, what harm would there be? However, it should not be used recklessly without parasitic accumulation. The best quality has black skin and white flesh; purple-black flesh is toxic and fatal. Preparation methods include soaking in Licorice water overnight, steaming with wine, or decocting. It is often used with Houpo (Magnolia Bark) and Yuanhua (Genkwa Flower). It is incompatible with Gegen (Pueraria Root). (Huang Gongxiu notes: Gangmu records Yang Xi having a small voice in his abdomen responding to people. Later, reading about Leiwuan in Bencao being ineffective, I realized this was likely an Echoing Worm affliction. This explanation is not without doubt.)