补命门、利三焦。
味甘性热。肉润皮涩。（皮敛肺定喘、固肾涩精、今药中罕用、若用之、当胜金樱莲须
也。）
通命门。利三焦。润肠胃。悦肌肤。温肺补肾。治痿强阴。佐补骨脂。一木一火。大补下焦
。（胡桃属木、破故纸属火、有木火相生之妙、古云∶黄柏无知母、破故纸无胡桃、犹水母
之无虾也、时珍曰∶三焦者、元气之别使、命门者、三焦之本原、命门指所居之府而言、为
藏精系胞之物、三焦指分治之部而名、为出纳腐熟之司、一为体、一为用也、其体非脂非肉、
两肾中央、系着于脊、下通二肾、上通心肺、贯脑、为生命之原、
相火之主、精气之府、人物皆有之、生人生物、皆由此出、内经所谓七节之旁、中有小心是
也、难经误以右肾为命门、高阳生承谬撰脉诀、至朱肱、陈言、戴起宗始辟之、肾命相通、
藏精而恶燥、胡桃颇类其状、皮汁青黑、故入北方、佐破故纸、润燥而调血、使精气内充、
血脉通利、诸证自除矣。）三焦通利。故上而虚寒喘嗽。（洪迈有痰疾、晚对、上谕以胡桃三
枚、姜三片、卧时嚼服、即饮汤、复嚼桃姜如前数、静卧必愈、迈如旨服、旦而痰消嗽止、
洪辑幼子、病痰喘、梦观音、令服人参胡桃汤、服之愈、明日去皮、喘复作、仍连皮用、信
宿而瘳、盖皮能敛肺也。同葱白姜茶捣煎、发汗散寒。）下而腰脚虚痛。内而心腹诸痛。
外而疮肿诸毒。皆可除也。动风痰。助肾火。肺有痰热。命门火炽者。勿服。润燥养血。去
皮。敛涩连皮。油者有毒。故杀虫治疮。壳外青皮、压油。乌髭发。
补益命门，通利三焦。
味甘，性热。核桃仁滋润，核桃皮涩敛。（核桃皮能收敛肺气、平定喘咳，固摄肾气、涩精止遗；如今在药方中很少使用，如果要用，其效果应当胜过金樱子和莲须。）
通达命门，通利三焦，滋润肠胃，润泽肌肤，温补肺脏与肾脏，治疗痿证并增强性功能，辅助补骨脂发挥作用。胡桃属木，补骨脂（破故纸）属火，二者配合有木火相生的奇妙功效。古人说：“黄柏如果没有知母，补骨脂如果没有胡桃，就像水母没有虾一样（相互依存）。”李时珍说：“三焦，是元气运行的通道；命门，是三焦的根本源头。命门是指其所居的脏腑部位，是藏精和系胞宫之物；三焦是指分治的区域而得名，是负责出纳和腐熟水谷的机构。一个是体，一个是用。命门的形体既不是脂肪也不是肌肉，位于两肾中央，附着于脊柱，下连双肾，上通心肺，贯通脑部，是生命的本源，相火的主宰，精气汇聚之所，人与动物都有它，生育人类和万物，都由此而出。《内经》所说的‘第七节脊椎旁边，中有小心’指的就是这个。《难经》错误地将右肾当作命门，高阳生沿袭这一谬误编写了《脉诀》，直到朱肱、陈言、戴起宗才开始驳斥这种错误。肾与命门相通，藏精而厌恶燥邪。胡桃的外形颇似命门之状，其汁液青黑色，所以归入北方肾经，辅助破故纸，滋润燥邪并调和血液，使精气在内充盈，血脉通畅流利，各种病症自然消除。”
三焦通利，因此能治疗上部因虚寒引起的喘咳。（洪迈患有痰疾，晚年面对皇帝询问时，皇帝谕令他用胡桃三枚、生姜三片，睡前嚼服，随即喝些汤水，再像之前那样次数嚼食桃仁和姜片，安静躺卧必定痊愈。洪迈遵照旨意服用，第二天痰消咳止。洪迈编辑《夷坚志》时记载他幼子患痰喘病，梦见观音菩萨，指示服用人参胡桃汤，服用后痊愈。第二天去掉了核桃皮，喘症又发作，仍然连着皮一起使用，两天后就康复了，大概是因为核桃皮能收敛肺气。将核桃仁同葱白、生姜、茶一起捣碎煎煮，可以发汗散寒。）下部能治疗腰脚虚痛。内部能治疗心腹各种疼痛。外部能治疗疮肿各种毒邪。都可以消除。
但胡桃会动风生痰，助长肾火。肺中有痰热者，命门火炽盛者，不要服用。去皮则润燥养血，连皮用则收敛涩滞。出油多的核桃有毒，所以能杀虫治疗疮疡。壳外的青皮，压榨取油，能使胡须头发变黑。
Tonifies the Mingmen (Gate of Life), benefits the Sanjiao (Triple Burner).
Taste is sweet, nature is hot. The kernel is moistening, the skin is astringent. (The skin gathers Lung Qi and stabilizes asthma, secures the Kidney and astringes essence; it is rarely used in modern prescriptions, but if used, its efficacy would surpass that of Rosa laevigata fruit [Jinyingzi] and Lotus stamen [Lianxu].)
Unblocks the Mingmen, benefits the Sanjiao, moistens the intestines and stomach, beautifies the skin and muscles, warms the Lungs and tonifies the Kidneys, treats flaccidity syndromes (Wei syndrome) and strengthens sexual function, assists Psoralea corylifolia (Pogu Zhi). Walnut belongs to Wood, and Psoralea corylifolia belongs to Fire; their combination possesses the subtle effect of Wood generating Fire. Ancients said: "If Phellodendron bark (Huangbai) lacks Anemarrhena rhizome (Zhimu), or Psoralea corylifolia (Pogu Zhi) lacks Walnut, it is like the water jellyfish lacking shrimp." Li Shizhen said: "The Sanjiao is the special envoy of Yuan Qi (Original Qi); the Mingmen is the root source of the Sanjiao. 'Mingmen' refers to the residence organ, which stores essence and connects to the uterus; 'Sanjiao' is named after its functional regions, serving as the manager of intake, output, and digestion. One is Substance (Ti), the other is Function (Yong). Its substance is neither fat nor flesh; it lies between the two Kidneys, attaches to the spine, connects downward to both Kidneys, upward to the Heart and Lungs, and penetrates the brain. It is the origin of life, the master of Ministerial Fire (Xiang Huo), and the mansion of Essence and Qi. All humans and animals possess it; human reproduction and the generation of all things proceed from here. This corresponds to what the *Neijing* states: 'Beside the seventh vertebra, there is the 'Xiao Xin' (Careful Mind/Heart).' The *Nanjing* erroneously identified the right Kidney as the Mingmen. Gao Yangsheng propagated this error by compiling the *Mai Jue* (Pulse Classic). It was not until Zhu Gong, Chen Yan, and Dai Qizong that this was refuted. The Kidney and Mingmen are interconnected; they store Essence and abhor dryness. The walnut resembles the state of the Mingmen; its juice is green-black, thus entering the North (Kidney meridian). Assisting Pogu Zhi, it moistens dryness and regulates blood, causing Essence and Qi to fill internally and blood vessels to flow smoothly, thereby eliminating various symptoms."
Because the Sanjiao is unblocked and smooth, it treats upper-level deficiency-cold wheezing and coughing. (Hong Mai suffered from phlegm disease. In his later years, when responding to imperial inquiries, the Emperor decreed he chew three walnuts and three slices of ginger before bed, then drink some soup, and repeat chewing the walnut and ginger as before. Quietly lying down would ensure recovery. Hong Mai followed these instructions; by morning, the phlegm dissipated and cough stopped. When Hong Mai edited his works, he recorded that his young son suffered from phlegm-wheezing illness and dreamed of Guanyin, who instructed him to take Ginseng and Walnut Decoction [Renshen Hutang Tang]. After taking it, he recovered. The next day, the walnut skin was removed, and the wheezing recurred. Using the walnut with the skin again led to recovery within two nights, likely because the skin can gather Lung Qi. Crushed together with scallion white, ginger, and tea and decocted, it induces sweating and disperses cold.) Lower-level deficiency-pain in the waist and feet. Internal pain in the heart and abdomen. External sores, swellings, and various toxins. All can be eliminated.
However, it moves Wind and generates Phlegm, and aids Kidney Fire. Those with Phlegm-Heat in the Lungs or blazing Fire in the Mingmen should not consume it. Removing the skin moistens dryness and nourishes Blood; using it with the skin provides astringency. Walnuts that are oily are toxic, thus capable of killing parasites and treating sores. The green skin outside the shell, when pressed for oil, darkens beard and hair.