一名冰片。宣、通窍散火。
辛温。（纲目云∶微寒、盖体温而用凉也。）香窜。善走能散。先入肺。传于心脾而透骨。
通
诸窍。散郁火。逐鬼邪。聪耳明目。消风化湿。治惊痫痰迷。目赤肤翳。（乳调点之。）耳聋
鼻。（鼻中 肉、点之自出、皆通窍之功。）喉痹舌出。（末点。）骨痛齿痛。（治骨。）
痘陷。（猪心血作引、酒服、或紫草汤服、引入心经、能发之。）产难。（新汲水调。）三虫五
痔。风病在骨髓者宜之。若在血脉肌肉。辄用脑麝。反引风入骨。如油入面。莫之能出。目
不明属虚者。不宜入点。（节斋曰∶冰片大辛热、用之点眼、取其拔出火邪、盖火郁发之、
从治法也、世人误以为寒、而常用之、遂致积热害目、故云眼不点不瞎者、此也。芳香为
百药之冠、香甚者、性必温热。）出南番。云是老杉脂。以白如冰、作梅花片者良。（今人有
以樟脑升提乱之、以杉木炭养之则不耗。牙痛、冰片朱砂末各少许、擦之立止、内外痔、
冰片分半、葱汁化、搽之。）
宣、通窍除湿。
辛热香窜。能于水中发火。（置水中、焰益炽。）通关利滞。除湿杀虫。置鞋中。去香港脚。
（
集要云∶和乌头为末、醋丸弹子大、置足心、微火烘之、汗出为效。）熏衣箧。辟蛀虫。以
樟木切片。井水煎成。（小儿秃疮、樟脑一钱、花椒二钱、脂麻二两、共为末、以退猪汤洗
过、搽之。）
龙脑香，又名冰片。具有宣通鼻窍、疏散火邪的功效。
味辛，性温。（《本草纲目》记载：微寒，这是因为其本体温度高而作用表现清凉。）气味芳香窜透，善于走散药力。先入肺经，随后传至心、脾二经，并能透达骨骼。
能够通达全身诸窍，疏散郁结之火，驱逐鬼邪（指某些怪异致病因素），使耳聪目明，消除风邪、化除湿气。治疗惊痫痰迷心窍、眼睛红肿、皮肤生翳。（用乳汁调和后点眼。）治疗耳聋、鼻塞流涕（鼻中息肉，点药后自能脱落，这都是通窍的功效）、喉痹舌体肿胀外伸。（将药末点涂。）治疗骨痛、牙痛。（主治骨骼疾病。）
治疗痘疮内陷。（以猪心血为引子，酒送服，或用紫草汤送服，引导药力进入心经，能使痘毒发出。）治疗难产。（用新汲取的井水调服。）治疗三虫（蛔虫、蛲虫、姜片虫等寄生虫）及五痔。骨髓中有风邪的患者适宜使用。如果在血脉肌肉层面，却滥用冰片和麝香，反而会引风邪深入骨骼，如同油渗入面粉，无法排出。眼睛不明亮属于虚证者，不宜用药点眼。（节斋说：冰片大辛大热，用于点眼，是取其拔出火邪的作用，这是“火郁发之”的从治法。世人误以为它性寒而常用，导致积热伤害眼睛，所以说“眼睛不点药不会瞎”，就是这个原因。芳香药物是百药之首，香气浓烈的，性质必定温热。）产自南番（南方海外地区）。说是老杉树的树脂，以白色如冰、制成梅花片状的为佳。（现在有人用樟脑冒充并扰乱市场，如果用杉木炭来养护樟脑则不易消耗。牙痛，取少量冰片和朱砂末，擦患处立即止痛；内外痔疮，取冰片半钱，用葱汁化开，涂抹患处。）
樟脑，具有宣通鼻窍、除湿的功效。
味辛，性热，气味芳香窜透。能够在湿水中激发火势。（放在水中，火焰更加旺盛。）能够通关利滞，除湿杀虫。放在鞋子里，可以去除香港脚（足癣/脚气）。（《集验方》记载：与乌头研成细末，醋制做成弹子大小的丸药，置于足心，用微火烘烤，出汗即为有效。）熏蒸衣物箱柜，可以防止蛀虫。用樟木切片，井水煎煮而成。（小儿秃疮，取一钱樟脑、二钱花椒、二两脂麻，共研为末，用退猪汤清洗患处后涂抹。）
Longnao Xiang (Borneol), also known as Bingpian (Borneol). It has the functions of promoting the unblocking of orifices and dispersing fire.
Pungent in flavor, warm in nature. (*Bencao Gangmu* states: slightly cold, because its physical temperature is high while its therapeutic effect is cool). Its fragrance is penetrating and volatile, good at moving and dispersing. It first enters the Lung Meridian, then transmits to the Heart and Spleen meridians, and can penetrate into the bones.
It can unblock all orifices, disperse stagnant fire, expel "ghost evils" (referring to certain strange pathogenic factors), improve hearing and vision, eliminate wind pathogens, and resolve dampness. It treats convulsions, epilepsy, and phlegm misting the mind; red eyes and skin opacities. (Apply mixed with milk.) Treats deafness, nasal congestion with discharge (nasal polyps will fall out after application, demonstrating the power of unblocking orifices); throat obstruction with tongue swelling and protrusion. (Apply powder directly.) Treats bone pain and toothache. (Treats skeletal diseases.)
Treats collapsed smallpox lesions. (Use pig heart blood as a guide, taken with wine, or taken with Zicao Decoction [Arnebiae Radix et Rhizoma], to guide the medicinal force into the Heart Meridian, enabling the eruption of toxins.) Treats difficult labor. (Take mixed with fresh well water.) Treats three types of parasites (roundworms, pinworms, liver flukes, etc.) and five types of hemorrhoids. Patients with wind pathogens in the bone marrow are suitable for its use. However, if used indiscriminately on blood vessels and muscles, Borneol and Moschus (Musk) will instead draw wind pathogens into the bones, like oil entering flour, impossible to remove. For unclear vision due to deficiency, it should not be used for eye drops. (Jiezai said: Borneol is extremely pungent and hot. Used for eye drops, it aims to extract fire pathogens, which is the "treating fire by dispersion" method from the perspective of treating contrary symptoms. People mistakenly believe it is cold and use it frequently, leading to accumulated heat damaging the eyes. Hence the saying "eyes do not go blind without dropping medicine," which refers to this. Fragrant herbs are the leaders among all medicines; those with strong fragrance must have warm and hot properties.) Originates from Nanfan (Southern overseas regions). It is said to be resin from old fir trees, with white-as-ice, plum-blossom-shaped pieces being the best. (Currently, people use Camphor [Zhangnao] to冒充 and disrupt the market; if Camphor is preserved with Fir charcoal, it does not easily dissipate. For toothache, mix a small amount of Borneol and Cinnabar powder, apply to the site for immediate relief. For internal and external hemorrhoids, take half a qian of Borneol, dissolve in Scallion Juice, and apply.)
Zhangnao (Camphor). It has the functions of promoting the unblocking of orifices and resolving dampness.
Pungent in flavor, hot in nature, with a penetrating and volatile fragrance. It can generate fire within water. (When placed in water, the flame burns more intensely.) It can open blockages and promote flow, resolve dampness, and kill parasites. Placed in shoes, it removes Hong Kong Foot (Tinea Pedis/Foot Athlete's Foot). (*Jiyi Fang* records: Mix with Aconitum carmichaelii Debeaux powder, make pills the size of beans using vinegar, place on the sole of the foot, and bake over mild heat until sweating occurs, which indicates efficacy.) Fumigate clothing chests to repel moths. Made by slicing Camphor wood and decocting in well water. (For infant alopecia barbae/circumscribed scalp ringworm, take one qian of Camphor, two qian of Zanthoxyllum bungeanum Maxim., and two liang of Sesamum indicum L. seed, grind into powder together, wash the affected area with Tui Zhu Tang [Decoction for Removing Pig Disease], and apply.)