甘微咸温无毒。河南者味甘温为上，泊上者味咸辛为下。又生取成对者力胜，
解下单角力薄。凡角大而毛色淡白者即为麋角，能补阳中之阴。熬胶法，取角寸截，用长流
水浸三日，刮净，入黄蜡煮三日夜，干即添水，三日夜足，去角取汁，重煎，滴水不化，胶
成切片，阴干，不可日晒，晒则融化成水矣。今市者多以黄明胶加楮实伪充，不可不察。取
嫩角寸截置小坛中，酒水相和，盆盖泥封，糠火煨三伏时，捣细如霜，名鹿角霜。
《本经》主伤中劳绝，腰痛羸瘦，补中益气力，妇人血闭，无子，止痛安胎，久服轻身
延年。
发明 鹿角生用则散热行血，消肿辟邪。熬胶则益阳补肾，强精活血。总不出通督脉补
命门之用。但胶力稍缓，不能如茸之力峻耳。互参二条经旨乃知茸有交通阳维之功，胶有缘
合冲任之用。然非助桂以通其阳，不能除寒热惊痫。非龟鹿二胶并用，不能达任而治羸瘦、
腰痛。非辅当归、地黄，不能引入冲脉而治妇人血闭、胎漏。至若胶治伤中绝劳，即茸主漏
下恶血也。胶之补中益气力，即茸之益气强志也。胶之轻身延年，即茸之生齿不老也。历考
《别录》、《外台》、《千金》等方，散血解毒居多，非如近世专一温补为务，殊失圣贤一
脉相传之义。鹿角霜治火不生土，脾胃虚寒，食少便溏，胃反呕逆之疾，取温中而不粘滞
也。古方多制应用。今人每以煎过胶者代充，其胶既去服之何益。生角镑尖屑，消乳痈肿毒
。灰行崩中积血。鹿骨安胎下气，作酒主内虚，续绝伤，补骨除风，《千金》鹿骨丹用之
。
味甘，微咸，性温，无毒。产于河南的鹿角胶，以味甘、性温者为上品；产于泊上（地名）的鹿角胶，以味咸、辛者为下品。此外，新鲜采取且成对生长的鹿角制成的胶，药效较强；而单独一只角的鹿角制成的胶，药效较薄。凡是角大且毛色淡白的，即为麋角，能够补益阳中之阴。
熬制鹿角胶的方法是：将鹿角切成一寸长的段，用流动的长流水浸泡三天，刮洗干净后，放入黄蜡中煮三个日夜，如果水干了就添加水，待三个日夜期满，取出鹿角，收取汁液，再次浓缩煎煮，直到滴水成珠不散开，胶就制成了。将胶切片，在阴凉处晾干，不可在阳光下暴晒，否则胶会融化成水。现在市场上常用黄明胶（牛皮熬制的胶）加楮实子粉末来伪造冒充，必须仔细辨别。
取嫩鹿角切成一寸长的段，放入小坛中，加入酒和水混合，用盆盖住并用泥封口，用糠火煨烧至三伏天结束，捣碎成霜状，称为鹿角霜。
《神农本草经》记载，鹿角胶主治内伤劳损、腰痛、身体消瘦，能补中益气力，治疗妇女血闭不通、不孕症，止痛并安胎，长期服用可轻身延年。
【发明】鹿角生用时，具有散热、行血、消肿、辟邪的功效；熬制成胶后，则能益阳补肾、强精活血。其作用总括起来，不外乎通督脉、补命门。但是，胶的药力相对缓和，不如鹿茸的药力峻猛。参考这两条经典旨意可知，鹿茸有交通阳维脉的功能，鹿角胶有缘合冲脉和任脉的作用。然而，如果不借助桂枝来通达阳气，就不能消除寒热、惊痫等症状；如果不将龟板胶与鹿角胶并用，就不能到达任脉而治疗身体消瘦、腰痛；如果不辅助当归、地黄，就不能引入冲脉而治疗妇女血闭、胎漏等症。至于鹿角胶治疗内伤绝劳，正如鹿茸主治漏下恶血一样；鹿角胶补中益气力，正如鹿茸益气强志一样；鹿角胶轻身延年，正如鹿茸生齿不老一样。
详细考证《名医别录》、《外台秘要》、《千金方》等医方，发现多用鹿角散血解毒，不像近代专门以温补为务，这大大失去了圣贤一脉相传的真义。鹿角霜用于治疗火不生土（肾阳虚不能温煦脾土）、脾胃虚寒、食欲不振、大便溏泄、胃反呕逆等疾病，取其温中而不粘滞的特性。古方中多将其炮制后应用。现代人常把煎过胶后的残渣代替鹿角霜使用，既然胶的有效成分已经去除，服用它又有什么益处呢？生鹿角镑下的尖端细屑，可以消散乳痈肿毒；鹿角灰可以治疗崩中积血。鹿骨能安胎下气，泡酒饮用主治内虚，接续绝伤，补骨除风，《千金方》中的鹿骨丹就用到了它。
Sweet in taste, slightly salty and warm in nature, non-toxic. Deer antler glue from Henan is of superior grade when it tastes sweet and is warm; that from Boshang is of inferior grade when it tastes salty and acrid. Furthermore, fresh deer antlers used in pairs produce glue with stronger efficacy, whereas single antlers yield glue with weaker efficacy. Antlers that are large and associated with pale white hair belong to the elk (Elk Antler), which can tonify Yin within Yang.
The method for decocting deer antler glue is as follows: Cut the antlers into one-cun segments, soak them in flowing water for three days, scrape clean, then boil with yellow beeswax for three days and nights. If the water evaporates, replenish it. After three days and nights are complete, remove the antlers and collect the juice. Decoct again until a drop solidifies upon contact with cold water, indicating the glue is formed. Slice the glue and dry it in the shade; do not expose it to sunlight, or it will melt into liquid. Currently, the market often substitutes Huangming Jiao (Ox Hide Glue) mixed with Broussonetia papyrifera fruit powder to fake it; this must be carefully examined.
To make Deer Antler Frost (Lujiao Shuang), take tender antlers cut into one-cun segments, place them in a small jar, mix wine and water, cover with a basin, seal with mud, and simmer over chaff fire until the end of the Sanfu period. Then pound finely into a frost-like powder.
*Shennong Bencao Jing* states that it treats internal injury and exhaustion, lower back pain, emaciation, tonifies the middle and boosts Qi and strength, treats amenorrhea in women, infertility, relieves pain, calms the fetus, and long-term use lightens the body and prolongs life.
[Invention] When used raw, deer antler dissipates heat, promotes blood circulation, reduces swelling, and wards off evil pathogens. When decocted into glue, it benefits Yang, tonifies the Kidney, strengthens essence, and invigorates blood. Its actions generally fall under unblocking the Du Meridian and tonifying the Mingmen Gate. However, the efficacy of the glue is relatively mild and cannot match the potent action of the velvet antler. Referencing these two classic principles reveals that velvet antler has the function of connecting the Yangwei Vessel, while deer antler glue has the function of harmonizing the Chong and Ren vessels. Nevertheless, without assisting Guizhi (Cinnamon Twig) to unblock Yang, one cannot eliminate chills, fever, palpitations, and epilepsy. Without combining Tortoise Shell Glue and Deer Antler Glue, one cannot reach the Ren vessel to treat emaciation and lower back pain. Without assisting Danggui (Angelica Sinensis) and Dihuang (Rehmannia Root), one cannot enter the Chong vessel to treat amenorrhea and fetal leakage in women. As for the glue treating internal injury and exhaustion, this corresponds to the velvet antler's treatment of leukorrhea with foul blood. The glue's ability to tonify the middle and boost Qi corresponds to the velvet antler's ability to boost Qi and strengthen willpower. The glue's ability to lighten the body and prolong life corresponds to the velvet antler's ability to promote tooth growth and prevent aging. A thorough examination of formulas in *Mingyi Bielu*, *Waitai Miyao*, and *Qianjin Fang* shows that deer antler was mostly used to disperse blood and detoxify, unlike modern times which focus solely on warming and tonifying, thereby losing the true meaning passed down by the sages. Deer Antler Frost treats conditions where Fire fails to generate Earth (Kidney Yang deficiency failing to warm Spleen Earth), such as Spleen-Stomach deficiency-cold, poor appetite, loose stools, and gastric regurgitation with vomiting, due to its warming properties without being cloying. Ancient formulas often prepared and applied it specifically. Modern people often substitute the residue after decocting glue, but since the active components have been removed, what benefit is there in taking it? Raw antler tips shaved into fine powder can resolve breast abscesses and toxic swellings. Ash from deer antler treats metrorrhagia with accumulated blood. Deer bone calms the fetus and directs rebellious Qi downward; taken as wine, it treats internal deficiency, heals severe injuries, tonifies bones, and expels wind. It is used in the Deer Bone Pill (*Lugu Dan*) from *Qianjin Fang*.