\r杜仲\pd322.bmp\r
味辛、甘，平、温，无毒。主腰脊痛，补中益精气，坚筋骨，强志，除阴下痒湿，小便
余沥，脚中酸疼不欲践地。久服轻身耐老。一名思仙，一名思仲，一名木绵。生上虞山谷及
上党、汉中。二月、五月、六月、九月采皮。（恶蛇蜕皮、玄参。）
陶隐居云∶上虞在豫州，虞、虢之虞，非会稽上虞县也。今用出建平、宜都者。状如浓
朴，折之多白丝为佳。用之，薄削去上皮，横理切令丝断也。臣禹锡等谨按蜀本图经云∶生
深山大谷。树高数丈，叶似辛夷。折其皮多白绵者好。今所在大山皆有。药性论云∶杜仲，
味苦。能治肾冷 （公对切）腰痛也。腰病患虚而身强直，风也。腰不利，加而用之。日华
子云∶暖。治肾劳腰脊挛。入药炙用。
图经曰∶杜仲，生上虞山谷及上党、汉中，今出商州、成州、峡州近处大山中亦有之。
木高数丈，叶如辛夷，亦类柘，其皮类浓朴，折之内有白丝相连。二月、五月、六月、九月
采皮用。江南人谓之 。初生叶嫩时采食。主风毒香港脚及久积风冷，肠痔下血亦宜。干末作
汤。谓之 芽。花、实苦涩，亦堪入药。木作屐。亦主益脚。《箧中方》主腰痛补肾汤∶杜
仲一大斤，五味子半大升，二物切，分十四剂，每夜取一剂，以水一大升，浸至五更，煎三
分减一，滤取汁，以羊肾三、四枚切下之，再煮三、五沸，如作羹法。空腹顿服，用盐、酢
和之亦得。此亦见崔元亮《海上方》，但崔方不用五味子耳。
雷公云∶凡使，先须削去粗皮，用酥蜜和作一两炙之尽为度，炙干了细锉用。凡修事一
斤，酥二两，蜜三两，二味相和，令一处用也。圣惠方治卒患腰脚疼痛，补肾。杜仲一两去
粗皮，炙微黄锉，以水二大盏，煎至一盏去滓，用羊肾二对，细切去脂膜，入药中煮，次入
薤白七茎，盐、花椒、姜、醋等如作羹吃。空腹食之。肘后方腰背痛。杜仲一斤，切，酒二
升，渍十日。服三合。胜金方治妇人胎脏不安，并产后诸疾，宜服杜仲丸。瓦上干，于木臼
中捣为末，煮枣为丸，如弹子大。每服一丸，烂嚼以糯米饮下。
味辛、甘，性平、温，无毒。主治腰脊疼痛，补益中气，增益精气，坚固筋骨，增强意志，消除阴部瘙痒潮湿及小便淋漓不尽，缓解足部酸痛以致不愿踩地。长期服用可身体轻健，延缓衰老。又名思仙，又名思仲，又名木绵。产于上虞山谷以及上党、汉中地区。二月、五月、六月、九月采集树皮。（畏蛇蜕皮、玄参。）
陶隐居说：上虞在豫州，是虞、虢国的虞，不是会稽的上虞县。现在使用的是出自建平、宜都的。形状像厚朴（Cortex Magnoliae Officinalis），折断后以白色丝状物多为佳。使用时，薄削去除外皮，顺着横向纹理切断使丝断开。臣禹锡等谨按蜀本图经记载：生长在深山大谷中。树高数丈，叶子像辛夷。折断其皮，白色绵状物多的为好。现在所在的大山都有。药性论记载：杜仲，味苦。能治疗肾冷引起的腰痛。腰部患病因虚而身体强直，属于风邪。腰部活动不利，加入使用即可。日华子说：性暖。治疗肾劳引起的腰脊拘挛。入药需炙用。
图经记载：杜仲，产于上虞山谷以及上党、汉中，现在商州、成州、峡州附近大山中也有。树木高数丈，叶子像辛夷，也类似柘树，其皮像厚朴，折断内部有白丝相连。二月、五月、六月、九月采集树皮使用。江南人称之为“思仙”。初生嫩叶时采集食用。主治风毒脚气及久积的风冷，肠痔下血也适宜。制成干末煮汤饮用，称为“思仙芽”。花和果实苦涩，也可入药。木材制作木屐，也能有益于脚部。《箧中方》中的主腰痛补肾汤：杜仲一大斤，五味子半大升，两味药材切碎，分为十四剂，每晚取一剂，用水一大升，浸泡至五更天，煎煮至减少三分之一，过滤取汁，将羊肾三、四枚切好放入，再煮三、五沸，如同做羹汤的方法。空腹顿服，用盐和醋调和也可以。这也见于崔元亮《海上方》，只是崔方的方子不用五味子罢了。
雷公说：凡是使用，先必须削去粗皮，用酥油和蜂蜜混合，一两为一度进行炙烤，炙干后细锉使用。凡是修整一斤，酥油二两，蜂蜜三两，两味混合，放在一处使用。圣惠方治疗突然患有的腰脚疼痛，补肾。杜仲一两，去掉粗皮，炙微黄后锉碎，用水两大盏，煎至一盏，去渣，用羊肾两对，细切去掉脂膜，放入药中煮，其次加入薤白七茎，盐、花椒、姜、醋等，如同做羹汤食用。空腹吃。肘后方治疗腰背痛。杜仲一斤，切碎，酒二升，浸泡十天。服用三合。胜金方治疗妇人胎脏不安，以及产后各种疾病，适宜服用杜仲丸。瓦上晒干，在木臼中捣为粉末，煮枣肉为丸，如弹子大小。每次服用一丸，嚼烂后用糯米饮送下。
Eucommiae Cortex (Duzhong)
Pungent, sweet; neutral, warm; non-toxic. Primarily treats pain in the lower back and spine, tonifies the Middle Jiao (Middle Burner), benefits Essence and Qi, strengthens sinews and bones, fortifies willpower, eliminates itching and dampness in the genital region, dribbling of urine, and soreness in the feet making one unwilling to tread on the ground. Long-term use makes the body light and delays aging. Also known as Sixian, Sizhong, or Mumian. Grows in valleys of Shangyu, as well as in Shangdang and Hanzhong. Harvest the bark in February, May, June, and September. (Incompatible with Ophichus Corium [Snake Skin] and Scrophulariae Radix [Xuan Shen].)
Tao Hongjing states: Shangyu is in Yuzhou, referring to the Yu of the States of Yu and Guo, not the Shangyu County in Kuaiji. The material currently used comes from Jianping and Yidu. Its appearance resembles Magnoliae Officinalis Cortex (Houpo); it is considered superior if it yields many white fibers when broken. For use, thinly shave off the outer bark and cut across the grain to break the fibers. Chen Yuxi et al., according to the Shuben Tujing, record: It grows in deep mountains and large valleys. The tree is several zhang high, leaves resemble Magnoliae Flos (Xinyi). When the bark is broken, those with abundant white fibrous tissue are good. It is now found in major mountains everywhere. Xingbing Lun records: Eucommiae Cortex has a bitter taste. It can treat kidney-cold-induced lower back pain. Lower back ailments characterized by deficiency and rigid straightening of the body are due to Wind pathogen. If lower back mobility is impaired, add this herb for use. Ri Hua Zi states: It is warming. It treats Kidney Labor causing spasms in the lower back and spine. For medicinal use, it should be processed by roasting.
Tujing records: Eucommiae Cortex grows in valleys of Shangyu, as well as in Shangdang and Hanzhong. Currently, it is also found in the deep mountains near Shangzhou, Chengzhou, and Xiazhou. The tree is several zhang high, leaves resemble Magnoliae Flos (Xinyi), and are also similar to Broussonetia papyrifera (Zhe) wood. Its bark resembles Magnoliae Officinalis Cortex (Houpo), and when broken, white fibers connect inside. The bark is harvested in February, May, June, and June for use. People in Jiangnan call it "Sixian". When the young leaves first sprout, they are harvested for food. It primarily treats Wind-Toxin affecting the legs (Hongjiaojiao/Jiangyang) and long-standing accumulation of Wind-Cold; it is also suitable for hemorrhoids with bleeding from the intestines. Made into dry powder and decocted as soup, it is called "Sixian Sprout". The flowers and fruits are astringent and bitter but can also be used medicinally. The wood is made into clogs, which also benefit the feet. The formula "Main Lower Back Pain Tonify Kidney Soup" from Qiezhong Fang: Eucommiae Cortex 1 da jin, Schisandrae Fructus (Wuweizi) half da sheng. Cut both herbs, divide into fourteen doses. Each night take one dose, soak in 1 da sheng of water until the fifth watch, decoct until reduced by one-third, filter to obtain the juice. Slice 3-4 Sheep Kidneys (Yangshen), add them, boil for three to five boils, similar to making soup. Take in one dose on an empty stomach; mixing with salt and vinegar is also acceptable. This is also seen in Cui Yuanliang's Haishang Fang, except that Cui's formula does not use Schisandrae Fructus (Wuweizi).
Lei Gong states: Whenever using it, first remove the rough bark. Mix with butter (Su) and honey, roast one liang at a time until thoroughly dried, then finely chop for use. For processing one jin, use two liang of butter and three liang of honey; mix the two ingredients together for use. Shenghui Fang treats sudden onset of lower back and leg pain, tonifying the Kidney: Eucommiae Cortex 1 liang, remove rough bark, roast until slightly yellow, chop. Decoct in 2 da zhan of water until reduced to 1 da zhan, remove dregs. Use 2 pairs of Sheep Kidneys (Yangshen), finely chop removing fatty membranes, add to the medicine and boil. Then add 7 stalks of Allii Macrostemonis Bulbus (Xiebai), salt, Zanthoxyli Pericarpium (Huajiao), Ginger, vinegar, etc., and eat like soup. Consume on an empty stomach. Zhouhou Fang treats lower back pain: Eucommiae Cortex 1 jin, chopped, steep in 2 sheng of wine for ten days. Take 3 he. Shengjin Fang treats uterine instability in women and various postpartum diseases; Du Zhong Wan is suitable. Dry on tiles, pound into powder in a wooden mortar, make pills with boiled jujube paste, size of a bullet. Take one pill per dose, chew thoroughly and swallow with glutinous rice drink.