味苦、咸，寒、微寒，有小毒。主杀三虫，逐毒瓦斯，胃中热。利丈夫，不利女子。作
摩膏，除小儿百病，逐邪气恶风汗出，除皮中热结积蛊毒，白虫、寸白自出不止。久服令人
阴痿。一名雷矢，一名雷实。赤者杀人。生石城山谷及汉中土中。八月采根，曝干。（荔实
、浓朴为之使，恶葛根。）
陶隐居云∶今出建平、宜都间。累累相连如丸。《本经》云∶利丈夫。《别录》云∶久服
阴
雷丸，竹之苓也。无有苗蔓，皆零无相连者。今出房州、金州。
今注此物性寒。《本经》云∶利丈夫，不利女子。《别录》云∶久服令阴痿者，于事相反。
按此则疏利男子元气，不疏利女子脏气，其义显矣。臣禹锡等谨按范子云∶雷矢出汉中，
色白者善。吴氏云∶雷丸，神农∶苦。黄帝、歧伯、桐君∶甘，有毒。扁鹊∶甘，无毒。季
氏∶大寒。药性论云∶雷丸，
君，恶蓄根，味苦，有小毒。能逐风。芫花为使。主癫痫狂走，
杀蛔虫。日华子云∶入药炮用。
雷公云∶凡使，用甘草水浸一宿了，铜刀刮上黑皮，破作四五片。又用甘草汤浸一宿后
蒸，从巳至未，出，晒干。
却以酒拌，如前从巳至未蒸，晒干用。经验前方∶下寸白虫。雷丸一味，水浸软去皮切，焙
干为末。每有疾者，五更初，
先食炙肉少许，便以一钱匕药，稀粥调半钱服之，服时须六衙及上半月日，虫乃下。
Taste: bitter, salty. Nature: cold, slightly cold. Toxicity: slightly toxic. Main actions: kills three types of parasites (Ascaris lumbricoides, Enterobius vermicularis, Fasciolopsis buski), expels toxic qi, and treats heat in the stomach. Beneficial for men, not beneficial for women. When made into a massage ointment, it removes various ailments in children, expels evil qi, aversion to wind, and sweating; clears heat nodules, accumulations, and gu poison in the skin; and stops the continuous spontaneous discharge of white worms and Taenia solium (pork tapeworm). Long-term use causes impotence in men. Also known as Lei Shi, also known as Lei Shi. The red variety is fatal. Grows in the valleys of Shicheng and in the soil of Hanzhong. Harvested in August, dried in the sun. (Lishi [Arecae Pericarpium], Houpo [Magnoliae Officinalis Cortex] act as guiding herbs; adverse with Gegen [Puerariae Radix].)
Tao Hongjing stated: It is now produced between Jianping and Yidu. The fruits are clustered together like pills. *Shennong Bencao Jing* states: "Beneficial for men." *Mingyi Bielu* states: "Long-term use..." (Text missing here, inferred from context below).
Lei Wan is the sclerotium of bamboo. It has no stems or vines; they grow scattered and unconnected. It is now produced in Fangzhou and Jinzhou.
Current annotations state that this substance is cold in nature. *Shennong Bencao Jing* states: "Beneficial for men, not beneficial for women." *Mingyi Bielu* states: "Long-term use causes impotence," which contradicts reality. Analyzing this, it appears to drain the primordial qi of men but does not drain the viscera qi of women; the principle is clear. Minister Yuxi et al., according to Fanzi, stated: Lei Shi is produced in Hanzhong; the white-colored ones are superior. Wu Shi stated: Lei Wan, Shenneng considered it bitter; Huangdi, Qibo, and Tongjun considered it sweet and toxic; Bianque considered it sweet and non-toxic; Ji Shi considered it greatly cold. *Yaoxing Lun* states: Lei Wan is a sovereign herb, adverse with Xugen [Achyranthis Bidentatae Radix], taste bitter, slightly toxic. It can expel wind. Yuanhua [Genkwa Flos] acts as an assistant herb. It treats epilepsy and manic running, and kills Ascaris lumbricoides. Rihua Zi stated: For medicinal use, it must be processed.
Leigong stated: Generally, soak in licorice water overnight, scrape off the black skin on the surface with a copper knife, break into four or five pieces. Then soak in licorice decoction overnight, steam from Si hour to Wei hour, take out, and dry in the sun. Then mix with wine, steam again from Si hour to Wei hour as before, and dry in the sun for use. Empirical prescription: Expel Taenia solium. Use only Lei Wan. Soak until soft, peel, slice, bake dry, and grind into powder. Whenever a patient suffers, at the beginning of the fifth watch (early morning), first eat a small amount of roasted meat, then take one qianbi of the medicine, mixed with half a qian of thin porridge. During medication, one must avoid the six Ya days and the first half of the lunar month for the worms to be expelled.