（《纲目》）
【释名】韶脑。
【集解】时珍曰∶樟脑出韶州、漳州。状似龙脑，白色如雪，樟树脂膏也。胡演升《炼
方》云∶煎樟脑法∶用樟木新者切片，以井水浸三日三夜，入锅煎之，柳木频搅。待汁减半，
柳上有白霜，即滤去滓，倾汁入瓦盆内。经宿，自然结成块也。他处虽有樟木，不解取脑。
又炼樟脑法∶用铜盆，以陈壁土为粉糁之，却糁樟脑一重，又糁壁土，如此四、五重。以薄
荷安土上，再用一盆覆之，黄泥封固，于火上款款炙之。须以意度之，不可太过、不及。勿
令走气。候冷取出，则脑皆升于上盆，如此升两、三次，可充片脑也。
【修治】时珍曰∶凡用，每一两以二碗合住，湿纸糊口，文武火 之。半时许取出，
冷定用。又法∶每一两，用黄连、薄荷六钱，白芷、细辛四钱，荆芥、密蒙花二钱，当归、
槐花一钱。以新土碗铺杉木片于底，安药在上，入水半盏，洒脑于上，再以一碗合住，糊口，
安火煨之。待水干取开，其脑自升于上。以翎扫下，形似松脂，可入风热眼药。人亦多以乱
片脑，不可不辨。
【气味】辛，热，无毒。
【主治】通关窍，利滞气，治中恶邪气，霍乱心腹痛，寒湿香港脚，疥癣风瘙，龋齿，杀
虫辟蠹。着鞋中，去香港脚（时珍）。
【发明】时珍曰∶樟脑纯阳，与焰硝同性，水中生火，其焰益炽。
今丹炉及烟火家多用之。辛热香窜，禀龙火之气，去湿杀虫，此其所长。故烧烟熏衣筐
席簟，能辟壁虱、虫蛀。
间，用帛绷定，月余甚妙。王玺《医林集要》方∶治香港脚肿痛。用樟脑二两，乌头三两，为
末，醋糊丸弹子大。每置一丸于足心踏之，下以微火烘之，衣被围覆，汗出如涎为效。
【附方】新三。
小儿秃疮∶韶脑一钱，花椒二钱，芝麻二两，为末。以退猪汤洗后，搽
牙齿虫痛∶《普济方》∶用韶脑、朱砂等分，擦之神效。余居士《选奇方》∶用樟脑、黄
丹、肥皂（去皮核）等分，研匀蜜丸。塞孔中
(From *Bencao Gangmu*)
[Names] Shaonao.
[Collected Explanations] Li Shizhen stated: Shaonao (Camphor) is produced in Shaozhou and Zhangzhou. Its appearance resembles Longnao (Borneol), white as snow, being the resinous paste of the camphor tree. Hu Yan in *Shenglian Fang* (Method of Refining) stated: The method for decocting Shaonao: Use fresh slices of camphor wood, soak them well water for three days and nights, then boil in a pot, stirring frequently with a willow stick. When the liquid reduces by half and white frost appears on the willow stick, filter out the dregs and pour the liquid into a earthenware basin. After overnight, it naturally solidifies into blocks. Although camphor trees exist elsewhere, people there do not know how to extract the camphor.
Another method for refining Shaonao: Use a copper basin, sprinkle powder made from old wall earth at the bottom, then layer a thickness of Shaonao, followed by another layer of wall earth, repeating this four or five times. Place mint leaves on top of the earth, cover with another basin, seal tightly with yellow mud, and slowly roast over fire. One must judge by intuition, ensuring the heat is neither too strong nor too weak. Do not allow the volatile essence to escape. Upon cooling and removal, the camphor sublimes to the upper basin. By sublimating two or three times, it can serve as Pian Nao (flake camphor).
[Preparation] Li Shizhen stated: For use, take one tael of Shaonao, place between two bowls, seal the rim with wet paper, and heat alternately with mild and strong fire for about half an hour. Remove and use after cooling. Another method: For one tael of Shaonao, use 6 qian of Huanglian (Coptidis Rhizoma) and Bohe (Menthae Haplocalycis Herba), 4 qian of Baizhi (Angelicae Dahuricae Radix) and Xixin (Asari Radix), 2 qian of Jingjie (Schizonepetae Spica) and Mimenghua (Buddlejae Flos), and 1 qian of Danggui (Angelicae Sinensis Radix) and Huaihua (Sophorae Flos). Line a new earthenware bowl with fir wood chips at the bottom, place the herbs on top, add half a cup of water, sprinkle the Shaonao over it, cover with another bowl, seal the rim, and simmer over fire. When the water dries, open it; the camphor will sublime to the upper bowl. Sweep it down with a feather; its shape resembles pine resin, suitable for eye drops treating wind-heat. People often mix adulterated Shaonao, so distinction is necessary.
[Properties and Flavor] Acrid, hot, non-toxic.
[Indications] Opens orifices and joints, promotes the flow of stagnant qi, treats sudden evil qi attack, cholera with heart and abdominal pain, cold-damp Hong Kong Foot (podagra/eczema of the foot), scabies, tinea, and pruritus, dental caries, kills insects and repels moths. Placing it in shoes removes Hong Kong Foot (Li Shizhen).
[Elucidation] Li Shizhen stated: Shaonao is purely yang, sharing properties with Yan Xiao (Saltpeter); it generates fire in water, making the flame more intense. It is now widely used in alchemical furnaces and fireworks. Its acrid, hot, and aromatic penetrating nature derives from the Qi of Dragon Fire, eliminating dampness and killing insects, which are its strengths. Thus, burning its smoke to fumigate clothes, baskets, mats, and bamboo blinds repels bedbugs and insect damage.
(Text gap here, likely referring to wound treatment): Bandage with silk gauze; leaving it for over a month is excellent. Formula from Wang Xi's *Yilin Jiyao*: Treats Hong Kong Foot swelling and pain. Use 2 liang of Shaonao and 3 liang of Wutou (Aconiti Lateralis Radix Praeparata), grind into powder, make pills the size of bullet seeds using vinegar paste. Place one pill on the sole of the foot, apply mild heat underneath, cover with clothing and blankets. Effectiveness is indicated when sweat flows like saliva.
[Attached Formulas] Three new formulas.
Pediatric Alopecia Tinea: 1 qian of Shaonao, 2 qian of Huajiao (Zanthoxyli Pericarpium), 2 liang of Zhima (Sesami Semen), grind into powder. Wash with pig-skin decotion, then apply to the affected area.
Dental Pain from Worms: From *Puji Fang*: Use equal parts of Shaonao and Zhusha (Cinnabaris), apply to teeth for miraculous effect. Yu Jushi's *Xuanqi Fang*: Use equal parts of Shaonao, Huangdan (Lithargyrum), and Feizao (Soapberry, peeled and pitted), grind uniformly, bind with honey into pills. Insert into the tooth cavity.