一名紫藤香。紫而润者良。瘦劲者劣。深紫色不美。番舶来者色较红。气甜而
药殊胜。
气味辛温。香中之清烈者也。烧之辟天行时气。宅舍怪异。（李 ）主消瘀血。疗折伤
金疮止
代郁金神
香刮末入药
下。研末掩之。血止
为末敷之。痈疽恶毒
〔论〕 辛温药类治气分。此以质润色红为良。固假其气以入血分而奏功也。（即白檀
紫檀
辛温例
岭南者色黑褐而坚硬。天台者色白而香软。或云。天台不及海南者力大。吴楚山
中极多。根叶皆香。但根不甚大。才如芍药。嫩者肉白。老者褐色。并以八月采根。
辛温微苦微香。气浓于味。阳也。入足阳阴少阴经。除诸冷。疏寒疫。理元气。肾间冷
气攻
恶心
昏沉
药气
逆。
邪气冷
恶心腹
草炙四
末。每
虚肿。
香汤下
乡村
温服。溏
蘸食。以
产后。铁
小儿慢
〔论〕 乌药之用。粗者谓其专于辛散而已。如止于辛散。何遽能化宿食。止血痢。节
便数
儿积
用者
中之
其精
字。
却不
冷。
气虚
服。
〔修治〕 根采旁附（直根不堪用）状如镯珠连者佳。去皮心。略炒。
嫩叶
炙研。煎汤代茗。补中益气。止小便滑数。（藏器）乌药下通肾经。上理脾胃元气
丹溪补阴丸药中。往往加乌药叶。
乌药又名紫藤香。颜色紫红且质地润泽的为上品，瘦弱坚硬的则较差。深紫色并不美观，从海外番船运来的颜色较红，气味甘甜且药效特别显著。
（气味）辛，温。是香气中清烈的一类。焚烧它可以辟除天行时气（流行性传染病），消除宅舍中的怪异之气。（李珣认为它）主治消散瘀血，治疗折伤、金疮，能止血。将郁金刮下粉末入药服用；或者研成粉末外敷伤口，血液即可停止。对于痈疽恶毒，将其研末外敷。
〔论〕 辛温类药物主要治疗气分病。乌药以质地润泽、颜色红润者为佳，这确实是借助其气味进入血分而发挥作用。（参考白檀、紫檀等辛温类的例子）。
岭南产的乌药颜色黑褐且坚硬，天台产的乌药颜色白且香软。有人说，天台产的乌药不如海南产的药力大。吴楚山间极多生长，根和叶都有香气，但根不太大，只有芍药那么粗。嫩根的肉质是白色的，老根是褐色的。都在八月采集根部。
（气味）辛，温，微苦，微香。气味浓郁重于味道，属阳。入足阳明胃经、足少阴肾经。能祛除各种冷邪，疏解寒疫，调理元气。对于肾间的冷气上逆导致的恶心、昏沉、腹部虚肿等症状，可用乌药研末，用温热的姜汤送服。也可蘸食。用于产后或小儿慢惊风积滞。
〔论〕 乌药的作用，粗浅者认为它只是专门用于辛散而已。如果仅仅止于辛散，怎么能化解宿食、止血痢、节制小便频数呢？
〔修治〕 采集根部旁附生的部分（直根不堪使用），形状像镯珠相连的为佳。去掉皮和心，稍微炒一下。嫩叶炙烤后研末，煎汤代替茶饮用，能补中益气，止住小便滑数。（陈藏器说）乌药下通肾经，上理脾胃元气。在丹溪补阴丸的药物中，往往加入乌药叶。
Wuyao (Linderae Radix), also known as Ziteng Xiang, is of superior quality when it is purple and moist; inferior quality when it is thin and hard. Deep purple color is not desirable. Those imported from foreign ships are redder in color, have a sweet aroma, and possess significantly better medicinal efficacy.
The flavor is pungent and the nature is warm. It belongs to the category of aromas that are clear and intense. Burning it can ward off epidemic qi (epidemic pathogens) and dispel strange phenomena in dwellings. (Li Xun) states that it mainly resolves blood stasis, treats fractures and metal wounds, and stops bleeding. Scrape Dujin (Curcumae Radix) into powder for internal use; or grind into powder and apply externally to stop bleeding. For carbuncles, sores, and malignant toxins, grind into powder and apply topically.
[Discussion] Pungent-warm herbs primarily treat Qi-level disorders. Wuyao is considered superior when its texture is moist and color is red, which indeed allows it to enter the Blood level through its aroma to achieve therapeutic effects. (Refer to examples of other pungent-warm herbs such as Baitan [Santalum album Lignum] and Zitan [Pterocarpus santalinum Lignum].)
Those from Lingnan are blackish-brown and hard; those from Tiantai are white and soft-aromatic. Some say that Tiantai varieties are less potent than those from Hainan. They grow abundantly in the mountains of Wu and Chu. Both roots and leaves are aromatic, but the roots are not very large, roughly the thickness of Shaoyao (Paeoniae Radix). The flesh of young roots is white, while old roots are brownish. Roots are harvested in the eighth lunar month.
The flavor is pungent, warm, slightly bitter, and slightly aromatic. The aroma is stronger than the taste. It is Yang in nature. It enters the Foot-Yangming Stomach Meridian and the Foot-Shaoyin Kidney Meridian. It expels various cold pathogens, disperses cold epidemics, and regulates Yuan Qi. For conditions such as nausea, drowsiness, and abdominal deficiency swelling caused by cold qi attacking upward from the inter-renal area, grind Wuyao into powder and take with warm ginger decoction. It can also be eaten dipped in food. It is used for postpartum conditions or slow convulsions and accumulation in children.
[Discussion] The function of Wuyao is crudely regarded as merely pungent dispersion. If it were only for pungent dispersion, how could it resolve retained food, stop bloody dysentery, and regulate frequent urination?
[Processing] Harvest the lateral adventitious roots (the taproot is unsuitable). Those resembling linked beads or bracelets are preferred. Remove the bark and core, and stir-fry briefly. Young leaves, after roasting and grinding, can be decocted as tea substitute to tonify the Middle and benefit Qi, and stop slippery and frequent urination. (Chen Cangqi stated) Wuyao connects downward to the Kidney Meridian and regulates upward the Yuan Qi of the Spleen and Stomach. In Danxi's Yin-Nourishing Pill, Wuyao leaves are often added.