味甘，平，无毒。主五脏百病，柔筋强骨、安魂魄、长肌肉，益气，利血脉，疗妇人
带下十二病，除气癃，明耳目。久服耐寒暑，不饥渴，不老神仙，轻身长年。人临死服五斤
，死三年色不变。一名玉札。生蓝田山谷，采无时。
畏款冬花。蓝田在长安东南，旧出美玉，此当是玉之精华，白者质色明澈，可消之为水，
故名玉泉。今人无复的识
者，惟通呼为玉尔。张华又云，服玉用蓝田谷玉白色者；此物平常服之，则应神仙，有人临
死服五斤，死经三年，其色
不变。古来发冢见尸如生者，其身腹内外，无不大有金玉。汉制王公葬，皆用珠襦玉匣，是
使不朽故也。炼服之法，亦
应依《仙经》
服玉法，水屑随宜，虽曰性平，而服玉者亦多乃发热如寒食散状。金玉既天地重宝，不比余
石，若未深解节度，勿轻用之。
〔谨案〕玉泉者，玉之泉液也，以仙室玉池中者为上，其以
法化为玉浆者，功劣于自然液也！
味甘，平，无毒。主除胃中热、喘息、烦满，止渴，屑如麻豆服之。久服轻身长年。
生蓝田，采无时。
恶鹿角。此云玉屑，亦是以玉为屑，非应别一种物也，《仙经》服谷玉，有捣如米粒，
乃以苦酒辈，消令如泥，亦有
合为浆者。凡服玉，皆不得用已成器物，及冢中玉璞也。好玉出蓝田，及南阳徐善亭部界中，
日南、卢容水中，外国于
阗、疏勒诸处皆善。《仙方》名玉为玄真，洁白如猪膏，叩之鸣者，是真也。其比类甚多相
似，宜精别之。所以燕石入笥，
卞氏长号也。
〔谨案〕饵玉，当以消作水者为佳。屑如麻豆服之，取其精润脏腑，滓秽当完
出也。
又为粉服之者，即使人淋壅。屑如麻豆，其义殊深。
味甘，性平，无毒。主治五脏百病，能柔筋强骨、安魂魄、长肌肉，益气，利血脉，治疗妇人带下十二种疾病，消除气癃（小便不利），使耳目清明。长期服用可耐寒暑，不饥渴，延年益寿如神仙，身体轻健长寿。人在临死时服用五斤，死后三年面色不变。又名玉札。产于蓝田山谷，采集没有固定时间。
畏忌款冬花。蓝田位于长安东南，旧时出产美玉，这应当是玉的精华，白色的质地明澈，可以将其消解为水，所以名叫玉泉。现在的人不再确切认识它，只普遍称为玉。张华又说，服用玉要用蓝田谷中白色的玉；这种物品平常服用，就应成神仙，有人临死时服用五斤，死后经过三年，其颜色不变。自古以来发掘坟墓见到尸体像活着一样，其身体内外无不含有大量的金玉。汉代制度规定王公贵族下葬，都用珠襦玉匣，这是为了使尸体不朽的缘故。炼服的方法，也应该依照《仙经》中服玉的方法，将玉磨成水屑随宜服用，虽然玉性平，但服用玉的人也多有出现发热如同寒食散发作的症状。金玉既然是天地的重宝，不同于其他石头，如果未能深刻理解节度，不要轻易使用。
【谨案】玉泉，是玉的泉液，以仙室玉池中产出的为上品，那些用人工方法化为玉浆的，功效劣于自然液！
味甘，性平，无毒。主治清除胃中热邪、喘息、烦闷胀满，止渴，将玉磨成麻豆大小的屑服用。长期服用可使身体轻健长寿。
产于蓝田，采集没有固定时间。
畏忌鹿角。这里所说的玉屑，也是将玉磨成屑，并非另一种不同的物体，《仙经》中服用谷玉，有捣碎如米粒大小，再用醋之类物质，消解使其成为泥状，也有合成为浆状的。凡是服用玉，都不得使用已成型的器物，以及墓穴中的玉璞。好玉出产于蓝田，以及南阳徐善亭部界中，日南、卢容水中，外国于阗、疏勒各处也都出产好玉。《仙方》称玉为玄真，洁白如猪油，敲击发声清脆的，才是真玉。其相似之物很多，应当仔细辨别。所以燕石放入箱笥，卞和会长期痛哭的原因就在这里。
【谨案】服用玉，应当以消解成水的为佳。将玉磨成麻豆大小的屑服用，是取其精润脏腑，渣滓应当完整排出。
又将其磨成粉服用，即使人出现淋证壅滞。将玉磨成麻豆大小的屑，其中的道理非常深远。
Sweet in taste, neutral in nature, non-toxic. It primarily treats diseases of the five Zang organs and all ailments, softens tendons and strengthens bones, calms the Hun and Po (ethereal soul and corporeal soul), nourishes muscles, tonifies Qi, promotes blood circulation, treats twelve types of leukorrhea in women, resolves Qi stagnation with urinary difficulty (Qi Long), and clarifies the eyes and ears. Long-term consumption enables one to withstand cold and heat, eliminates hunger and thirst, prolongs life like an immortal, lightens the body, and extends longevity. If taken by a person on their deathbed in five jin (approx. 2.5-3 kg), their complexion remains unchanged for three years after death. Also known as Yu Zha (Jade Nail). Grows in the valleys of Lantian, can be harvested at any time.
It is incompatible with Dong Hua (Adenophora flower). Lantian is located southeast of Chang'an, historically producing fine jade; this substance is likely the essence of jade. The white variety has a clear and transparent texture and can be dissolved into water, hence the name Yu Quan (Jade Spring). People today no longer recognize it precisely, generally referring to it simply as Jade. Zhang Hua further stated that for ingestion, one should use the white jade from the valley of Lantian; regular consumption of this item should lead to immortality. There are accounts of individuals who took five jin before death, remaining unchanged in color for three years post-mortem. Historically, tombs excavated revealing corpses appearing alive often contained significant amounts of gold and jade inside and outside the body. In Han dynasty customs, kings and nobles were buried with pearl jackets and jade coffins to ensure imperishability. The method of refining and ingesting should follow the "Immortal Scriptures" regarding jade consumption. Grinding jade into fine powder/water particles for appropriate use is advised. Although its nature is neutral, those who consume jade often experience fever resembling symptoms of Hanshi San (Cold Food Powder). Since gold and jade are precious treasures of heaven and earth, unlike other stones, if one does not deeply understand the dosage and precautions, do not use them lightly.
[Commentary] Yu Quan refers to the liquid essence of jade. The best quality comes from the Jade Pool in immortal chambers. Those artificially processed into jade paste have inferior efficacy compared to natural liquids!
Sweet in taste, neutral in nature, non-toxic. Primarily clears heat in the stomach, relieves wheezing, alleviates irritability and fullness, stops thirst. Take ground into particles the size of hemp seeds or beans. Long-term consumption lightens the body and extends longevity.
Grows in Lantian, can be harvested at any time.
It is antagonistic to Deer Antler. The term "Yu Xie" (Jade Fragments) here refers to jade ground into fragments, not a different substance. The "Immortal Scriptures" mention consuming grain-like jade, pounded to the size of rice grains, then dissolved using vinegar or similar agents until it becomes mud-like, or sometimes mixed into a paste. When ingesting jade, one must never use already crafted vessels or raw jade nodules from tombs. Fine jade originates from Lantian, the Xu Shanting region of Nanyang, waters of Rinan and Lu Rong, and foreign lands such as Khotan and Shule. The "Immortal Prescriptions" call jade Xuan Zhen (Mysterious Truth); true jade is pure white like lard and rings clearly when struck. Many look-alikes exist, so careful distinction is necessary. This explains why Bian He wept bitterly upon having his stone mistaken for jade.
[Commentary] For ingesting jade, dissolving it into water form is superior. Taking it as hemp-seed-sized fragments allows the essence to moisten the Zang and Fu organs, while the dregs should be excreted intact. Taking it as powder may cause strangury and obstruction. The rationale for taking it as fragments is profound.