咸，苦，寒，无毒。解大毒热，软诸硬物。疗风牙虫牙，杀火毒面毒。吐心腹之烦满，
扫咽
喉之热痛，愈骨槽之风劳，治 齿之风疳。
出肃州以西平泽及山谷中。形似黄矾而坚实。有夹烂木者，云是胡桐树脂沦入土石碱卤
地者
杨、青桐、桑辈。以黄土色者为上。又有木泪、石泪之殊。木泪乃树脂流出者，状如膏油。
石泪
乃脂入土石间者，其状成块，以其得碱斥之气，故入药又以石泪为胜。
蜜炙用。恶干漆，伏硫黄。
苦，寒，无毒。入足厥阴、少阴、太阴经。补肾壮水，泻火治疮。却腰脚之痿痹，除骨
蒸之
住痢疾之血下。乃治口疮仙剂，为救瘫痪良药。
生汉中川谷，今处处有之。以蜀出肉浓色深者为佳。一种小柏，一名子柏，亦名山石榴，
其
多刺，皮亦黄。并主口疮。
敛疮生肌，为末，面糊合敷。（验方第一。）
中自死畜肉毒，为末水下。（第二。）
冻疮痛裂，为末，乳汁合敷。（第三。）
小儿下血，同赤芍丸服，米汤下。（第四。）
小儿热泻，米汤丸下。（第五。）
梦遗有热，黄柏一两，冰片一钱，蜜丸服。（第六。）
消渴多尿，黄柏代茶饮之。（第七。）
目昏眩，每旦含黄柏一片，吐津洗之。（第八。）
猝喉痹痛，黄柏片含之，又以酒煎半斤，空心饮。（第九。）
口舌生疮，口含之良，又同干姜末掺之。（第十。）
口疳臭烂，同铜绿掺之。（十一。）
鼻生疮，同槟榔、猪脂合敷之。（十二。）
唇疮痛裂，黄柏末，以蔷薇根汁合敷，立效。（十三。）
囟肿，为末敷足心。（十四。）
手足肿痛欲断，黄柏五斤，水煎渍之。（十五。）
痈疽乳发初起，以黄柏末、鸡子白合敷。（十六。）
脓疮不干，遍身，为末，入枯矾少许，掺之。（十七。）
男子阴疮，煎洗之，蜜涂之。（十八。）
疮热疮，蜜炙，末，搽之。（十九。）
尿闭腹胀睛凸，渗利不效，黄柏、知母，稍加肉桂，水煎服，立通。（二十。）
大补丸 黄柏
水丸。治阴火为病。血虚，四物汤下；气虚，四君子汤下。（诸方第一。）
【胡桐泪】
味咸、苦，性寒，无毒。能解除大毒之热邪，软化各种坚硬之物。治疗风牙痛和虫牙痛，清除面部火毒和热毒。吐出心腹部的烦闷胀满感，消除咽喉的热痛，治愈骨槽风引起的劳损，治疗牙齿的风疳病。
产于肃州以西的平泽及山谷中。形状像黄矾但质地坚实。有的夹杂着腐烂的木头，说是胡桐树的树脂渗入到含有碱卤的土石之地中，与杨、青桐、桑等树木有关。以土黄色者为上品。又有木泪和石泪的区别。木泪是树脂流出的，状如膏油。石泪是脂液进入土石之间的，其形状结成块状，因为它得到了碱性排斥之气的作用，所以入药时又以石泪为优。
【黄柏】
味苦，性寒，无毒。入足厥阴肝经、足少阴肾经、足太阴脾经。补肾壮水（滋补肾阴），泻火治疗疮疡。缓解腰脚痿痹，清除骨蒸潮热，止住痢疾便血。这是治疗口疮的仙方，也是救治瘫痪的良药。
生于汉中地区的川谷，现在各地都有。以四川出产的肉质厚、颜色深者为佳。有一种小柏树，又名子柏，也叫山石榴，多刺，皮也是黄色的。同样主治口疮。
收敛疮口，促进生肌，研成粉末，用面糊调和敷用。（验方第一。）
误食中毒死的牲畜肉导致的毒素，研成粉末，用水送服。（第二。）
冻疮疼痛破裂，研成粉末，用乳汁调和敷用。（第三。）
小儿下血，配合赤芍丸服用，米汤送下。（第四。）
小儿热性腹泻，制成米汤丸剂送下。（第五。）
梦遗且有内热，用黄柏一两，冰片一钱，炼蜜为丸服用。（第六。）
消渴症且多尿，用黄柏代替茶饮。（第七。）
眼睛昏花眩晕，每天早晨含一片黄柏，吐津液清洗患处。（第八。）
突然发生的喉痹疼痛，含服黄柏片，又将半斤黄柏用酒煎煮，空腹饮下。（第九。）
口舌生疮，含在口中效果好，又可与干姜粉混合掺敷。（第十。）
口疳臭烂，与铜绿混合掺敷。（十一。）
鼻子生疮，与槟榔、猪脂混合敷用。（十二。）
嘴唇生疮疼痛破裂，用黄柏粉末，以蔷薇根汁调和敷用，立即见效。（十三。）
囟门肿胀，研成粉末敷于足心。（十四。）
手足肿痛欲断绝，用黄柏五斤，水煎后浸泡患处。（十五。）
痈疽乳发初起，用黄柏粉末、鸡蛋清调和敷用。（十六。）
脓疮不干，遍布全身，研成粉末，加入少许枯矾，撒敷患处。（十七。）
男子阴部生疮，煎汤洗涤，再用蜜涂抹。（十八。）
疮热疮，蜜炙后研末，搽涂患处。（十九。）
小便闭塞腹胀眼球突出，渗利疗法无效时，用黄柏、知母，稍加肉桂，水煎服，立即通畅。（二十。）
大补丸：由黄柏制成水泛丸。治疗阴火为病。血虚者，用四物汤送服；气虚者，用四君子汤送服。（诸方第一。）
[Hutong Lei (Tamarix Gum)]
Salty, bitter, cold, non-toxic. Resolves severe toxic heat and softens various hard masses. Treats wind-induced toothache and worm-induced toothache; eliminates fire toxin and facial toxin. Expels vexation and fullness from the heart and abdomen; clears heat pain in the throat and pharynx; cures bone cavity wind-lao (chronic inflammation/ulceration); treats wind-gum disease of the teeth.
Produced in the flat marshes and valleys west of Suzhou. Shape resembles Huangfan (Yellow Alum) but is solid and firm. Some contain rotting wood, said to be resin from Hutong trees that has seeped into earth and stone areas with alkaline/saline properties, associated with Poplar, Qingtong, Mulberry, etc. The ones with an earthy yellow color are superior. There is a distinction between "Wood Tear" and "Stone Tear." Wood tear is exuded resin, resembling ointment or oil. Stone tear is lipid that has entered between earth and stones, forming lumps. Because it obtains the qi of alkaline repulsion, for medicinal use, Stone Tear is considered superior.
Used after honey-frying. Averse to Dry Lacquer (Ganqi); Sulfur can control/subdue it.
[Huangbo (Phellodendron Bark)]
Bitter, cold, non-toxic. Enters the Foot Jueyin Liver Meridian, Foot Shaoyin Kidney Meridian, and Foot Taiyin Spleen Meridian. Tonifies the kidney and strengthens water (nourishes Kidney Yin); purges fire and treats sores. Relieves flaccidity and numbness of the waist and legs; removes bone-steaming fever; stops bloody dysentery. It is a miraculous formula for treating mouth ulcers and a good medicine for saving paralysis.
Grows in the rivers and valleys of Hanzhong; now found everywhere. Those produced in Shu (Sichuan) with thick flesh and deep color are best. There is a type of small Cypress, also called Zibo or Shanshiliu (Pomegranate Tree), which is thorny and has yellow bark. It also primarily treats mouth ulcers.
Astringes sores and generates flesh: grind into powder, mix with wheat paste, and apply externally. (Verified Formula 1.)
For poisoning from eating meat of animals that died naturally: grind into powder, take with water. (2.)
For frostbite with painful cracking: grind into powder, mix with milk, and apply externally. (3.)
For lower bleeding in children: administer together with Chishao Wan (Red Peony Pill), taken with rice soup. (4.)
For pediatric heat diarrhea: form into pills with rice soup and take. (5.)
For nocturnal emission with internal heat: Huangbo 1 liang, Bingpian (Borneol) 1 qian, form into honeyed pills and take. (6.)
For Xiao Ke (Wasting-Thirst) with polyuria: use Huangbo as tea substitute. (7.)
For dim vision and dizziness: hold one slice of Huangbo in the mouth each morning, spit saliva to rinse. (8.)
For sudden onset of Hou Bi (throat obstruction/pain): hold slices of Huangbo in the mouth; decoct half jin (approx. 500g) of Huangbo in wine and drink on an empty stomach. (9.)
For mouth and tongue ulcers: holding in the mouth is effective; alternatively, mix with Ganjiang (Dried Ginger) powder and sprinkle. (10.)
For foul-smelling gum disease (Kou Gan): mix with Tonglu (Malachite) and sprinkle. (11.)
For nasal sores: mix with Binglang (Areca Nut) and Zhu Zhi (Pig Fat) and apply. (12.)
For lip sores with painful cracking: use Huangbo powder mixed with Qiangwei Gen (Rose Root) juice; immediate effect. (13.)
For fontanelle swelling: grind into powder and apply to the sole of the foot. (14.)
For severe swelling and pain in hands and feet threatening amputation: decoct 5 jin of Huangbo in water and soak. (15.)
For early-stage Yong Ju (carbuncles) and Ru Fa (breast abscess): mix Huangbo powder with Ji Zi Bai (Egg White) and apply. (16.)
For suppurating sores that do not dry up, widespread on the body: grind into powder, add a small amount of Kufan (Alum), and sprinkle. (17.)
For male yin sores: decoct for washing, then apply honey. (18.)
For Chu Re Chu (heat sores): honey-fry, grind into powder, and apply. (19.)
For urinary retention, abdominal distension, and protruding eyes, where diaphoretic/diuretic methods fail: use Huangbo and Zhimu, with a slight addition of Rougui (Cinnamon Bark), decoct in water and take; immediate relief. (20.)
Da Bu Wan (Great Tonification Pill): Made from Huangbo, formed as water pills. Treats diseases caused by Yin Fire. For Blood Deficiency, take with Si Wu Tang (Four Substances Decoction); for Qi Deficiency, take with Si Jun Zi Tang (Four Gentlemen Decoction). (First of All Formulas.)