此是乌鸟食一物子。粪落树上。感气而生。诸树多有寄生。茎叶并相似。但须桑上
者。方合用。非自采即难以别。可断茎视之。色深黄者为验。（保升）近海州邑及海外境土。
其地暖而不蚕。桑无采捋之苦。气浓意浓。自然生出。何尝节间可容他子耶。（丹溪）
气味苦甘平。益血脉。助筋骨。治腰痛。（是血脉虚衰不能通行者）主妊娠漏血不止。
令胎牢固。愈崩中内伤不足。产后余疾。小儿背强痈肿。疗腰背腿脚遍身骨节疼痛。祛风痹
顽麻。本草桑叶桑枝皆能治血。寄生得其气。故能益血脉。（类明）本于桑而抽其精英。功
用。比桑尤胜。所治诸证。皆由血虚有热致然。此药性能益血。兼能祛湿。（仲淳）凡风湿
作痛之证。古方用独活寄生汤。盖以主病者为君。二味俱能去风。胜湿也。若辨认未明。以
杂木寄生为桑寄生。又用土当归假代川独活。两性俱燥。耗卫败营。无益有损。近茭山。吴
氏。辨认独活。原本羌活一种。以节密轻虚者为羌。节疏重实者为独。川续断与桑寄生气味
略异。主治颇同。不得寄生。即加续断。便名。羌活续断汤。使医者不泥于专名。病家勿误
于伪药。其意殊善。（嘉谟）同枸杞当归牛膝续断地黄胡麻首乌。治血虚手臂骨节疼痛。胎
动腹痛。桑寄生一两半。阿胶炒半两。艾叶半两。水煎温服。或去艾叶。以其热也。毒痢脓
血。六脉微小。并无寒热。宜以桑寄生二两。芎防各三钱半。炙甘草三铢。为散。每用二钱。
水煎八分。和渣服。下血止后。但觉丹田元气虚泛。腰膝沉重少力。桑寄生为末。每用一钱。
非时白汤点服。小便频数。猝然溲血不止。并不疼痛。此缘心中机谋积恶。奸险嫉妒。多积
忿气。伤损肝心。又因色伤。小肠气虚。其血乘虚妄行故也。宜用桑寄生一两。熟地茯苓各
半两。人参川芎独活蒲黄各二钱半。甘松沉香各八分四厘。为细末。每用三钱匕。水一盏。
煎一二沸。便倾出。去渣。不时服。服后其血已安。惟觉丹田元气之虚。腰膝沉困少力。宜
再取桑寄生细末一二钱。非时点服补之。
〔论〕桑之气味甘寒。其所寄生之物。何以功用尤胜。盖热能伤血。寒能泣血。此之转
化为寄生者。即以其转化为优。而功懋于血脉。诚如缪氏所云。不寒不热。可以疗虚也。至
于血热之治。殊未然。但可以言桑耳。
不得真者不用。寇氏言有误服他木寄生。其人逾月而毙者。慎之。忌火忌铁。
这是乌鸟吃了一种果实后，粪便落在树上，受风气感召而生长出来的。各种树上都有寄生植物，茎和叶子都很相似，但必须选用生长在桑树上的，才符合药用要求。如果不是亲自采摘的，就难以辨别真伪。可以折断茎秆来观察，颜色呈深黄色的才是真品。（引自《本草拾遗》保升）
近来在海州地区及海外边境土地上，那里气候温暖但不养蚕，因此没有采摘桑叶的劳苦，药气浓厚、药意浓郁，是自然生长出来的。哪里会有其他树种在节间容纳这种种子呢？（引自朱丹溪）
【气味与功效】味苦、甘，性平。能补益血脉，强壮筋骨，治疗腰痛。（适用于因血脉虚衰不能通畅运行的情况）。主治妊娠期间漏血不止，能使胎儿牢固；治愈崩中（非经期大量出血）、内伤不足引起的产后余疾；治疗小儿背部僵硬、痈肿；疗治腰背、腿脚及全身骨节疼痛；祛除风痹引起的顽麻。
《本草》记载桑叶、桑枝都能治疗血病，桑寄生得桑树之气，所以能补益血脉。（引自《证类本草》类明）它本源于桑树，汲取了桑树的精华，其功用比桑叶、桑枝更为优越。所治疗的诸种病症，都是由血虚有热导致的。此药性能补血，兼能祛湿。（引自陈士铎仲淳）
凡是风湿作痛的病症，古方常用独活寄生汤。大概是以主病药物为君药，这两味药（指桑寄生与独活）都能祛风胜湿。如果辨认不明，用杂木寄生冒充桑寄生，又用土当归假冒川独活，这两种药材性质都燥烈，会耗伤卫气、败坏营血，不仅无益反而有害。
近处茭山吴氏认为，独活原本就是羌活的一种，以节密、质轻虚的为羌活，节疏、质重实的为独活。川续断与桑寄生的气味略有不同，但主治功能颇为相似。如果没有桑寄生，就可以加用续断，便命名为“羌活续断汤”。这样使医者不拘泥于专名，病家不误用伪药，用意很好。（引自嘉谟）
【配伍应用】
1. 与枸杞、当归、牛膝、续断、地黄、胡麻、首乌同用，可治疗血虚引起的手臂骨节疼痛、胎动腹痛。
2. 桑寄生一两半，阿胶炒制半两，艾叶半两，水煎温服。或者去掉艾叶，因为艾叶性热。
3. 毒痢脓血，六脉微小，并无寒热症状。宜用桑寄生二两，川芎、防风各三钱半，炙甘草三铢，研为散剂。每次服用二钱，加水煎至八分，连同药渣一起服用。下血停止后，只感觉丹田元气虚泛，腰膝沉重无力。将桑寄生研为末，每次服用一钱，随时用白开水冲服。
4. 小便频数，突然尿血不止，并不疼痛。这是因为心中机谋积恶，奸险嫉妒，多积忿气，损伤肝心；又因房事过度受伤，导致小肠气虚，血液乘虚妄行所致。宜用桑寄生一两，熟地黄、茯苓各半两，人参、川芎、独活、蒲黄各二钱半，甘松、沉香各八分四厘，研为细末。每次取三钱匕，加水一盏，煎煮一二沸，立即倒出，去渣，随时服用。服药后出血已止，只感觉丹田元气虚弱，腰膝沉困无力。宜再取桑寄生细末一二钱，随时冲服以补益之。
〔论〕桑的气味甘寒，它所寄生的东西，为什么功用更胜一筹？大概是因为热能伤血，寒能凝涩血液。这种转化为寄生的过程，正是以其转化后的优势，而在补益血脉方面功劳卓著。确实像缪希雍所说，不寒不热，可以治疗虚损。至于说它能治疗血热，就不太准确了，这只能说是针对桑树本身的特性而言。
不是真品不要使用。寇宗奭说有误服其他树木寄生植物的，人过了一个月就死了，务必谨慎。忌火、忌铁。
This is a substance generated when the droppings of a crow, after consuming certain fruits, fall onto a tree and are influenced by wind and qi to grow. Parasitic plants exist on many trees, with stems and leaves that are quite similar; however, only those growing on mulberry trees (Sangjisheng, Mulberry Mistletoe) meet the medicinal requirements. If not personally harvested, it is difficult to distinguish them from others. One can break the stem for inspection: those with a deep yellow color are authentic. (Cited from Baosheng)
Recently, in coastal areas such as Haizhou and overseas territories, the climate is warm but sericulture is absent, so there is no hardship of plucking mulberry leaves. The qi and medicinal potency are rich and dense, growing naturally. How could other tree species accommodate such seeds at their nodes? (Cited from Danxi)
[Flavor and Properties] Bitter, sweet, neutral. It benefits the blood vessels, strengthens sinews and bones, and treats lower back pain. (Applicable to cases where deficiency and decline of blood vessels lead to poor circulation.) It primarily treats persistent spotting during pregnancy, stabilizing the fetus; cures postpartum residual ailments caused by internal injury and insufficiency, including metrorrhagia (Bengzhong); treats infantile rigidity of the back, carbuncles, and swellings; alleviates pain in the waist, back, legs, feet, and throughout the body's joints; and dispels wind-dampness causing numbness and stiffness.
The Materia Medica records that both mulberry leaves and branches can treat blood disorders. Sangjisheng inherits the qi of the mulberry tree, thus it can benefit the blood vessels. (Cited from Leiming) Originating from the mulberry tree and extracting its essence, its efficacy surpasses that of mulberry leaves and branches. The various conditions it treats are all caused by blood deficiency with heat. This herb has the ability to nourish blood and also dispel dampness. (Cited from Zhongchun)
For conditions involving pain due to wind-dampness, ancient formulas often use Duhuo Jisheng Tang (Notopterygium and Mistletoe Decoction). Presumably, the primary herb for the disease serves as the sovereign drug; these two herbs (referring to Sangjisheng and Duhuo) both dispel wind and overcome dampness. If misidentified, using parasitic plants from miscellaneous trees instead of Sangjisheng, and using Tu Danggui (Radix Angelikae Pubescentis) to substitute Chuan Duhuo (Rhizoma Notopterygii), both of which are drying in nature, will consume Wei Qi (Defensive Qi) and damage Ying Blood (Nutritive Blood), doing more harm than good.
Wu of Jiaoshan recently argued that Duhuo is originally a type of Qianghuo: those with dense nodes and light, hollow texture are Qianghuo, while those with sparse nodes and heavy, solid texture are Duhuo. Xu Duan (Radix Dipsaci) differs slightly in flavor and properties from Sangjisheng, but their therapeutic indications are quite similar. If Sangjisheng is unavailable, Xu Duan can be added, creating a formula named Qianghuo Xuduan Tang (Notopterygium and Dipsacus Decoction). This approach prevents physicians from being rigid about specific names and protects patients from counterfeit drugs, which is a commendable intention. (Cited from Jiamo)
[Formulations]
1. Combined with Gouqi (Lycium Fruit), Danggui (Angelica Sinensis Root), Niuxi (Achyranthes Root), Xuduan (Dipsacus Root), Dihuang (Rehmannia Root), Huma (Sesamum Seed), and Shouwu (Polygonum Multiflorum Root), it treats arm joint pain and fetal movement abdominal pain caused by blood deficiency.
2. Sangjisheng 1.5 liang, fried Ejiao (Donkey-hide Gelatin) 0.5 liang, Aye (Mugwort Leaf) 0.5 liang. Decoct in water and take warm. Alternatively, remove Aye because it is hot in nature.
3. For toxic dysentery with pus and blood, minute pulses in all six positions, and absence of chills or fever: Use Sangjisheng 2 liang, Xiong (Chuanxiong Rhizome) and Fangfeng (Saposhnikovia Root) each 3.5 qian, Zhi Gancao (Prepared Licorice Root) 3 zhu. Grind into powder. Take 2 qian per dose, decoct in water until reduced to 8 fen, and ingest with the dregs. After bleeding stops, if one feels emptiness of Yuan Qi (Original Qi) in the Dantian and heaviness/weakness in the waist and knees: Grind Sangjisheng into powder, take 1 qian per dose, and administer with plain boiled water as needed.
4. For frequent urination, sudden continuous hematuria without pain: This arises from accumulating evil thoughts, jealousy, and resentment, damaging the Liver and Heart; combined with sexual excess leading to deficiency of Small Intestine Qi, causing blood to flow recklessly due to void. Use Sangjisheng 1 liang, Shudi (Prepared Rehmannia Root) and Fuling (Poria) each 0.5 liang, Renshen (Ginseng Root), Chuanxiong, Duhuo, and Puhuang (Tylpha Pollen) each 2.5 qian, Gansong (Costus Root) and Chenxiang (Aquilaria Wood) each 0.84 fen. Grind into fine powder. Take 3 qian bi (approx. 3 spoons) per dose, add one cup of water, boil for one or two boils, pour out immediately, strain, and take as needed. After taking this, if bleeding ceases but one still feels deficiency of Dantian Yuan Qi and heaviness/weakness in the waist and knees: Take another 1-2 qian of fine Sangjisheng powder and administer with water as needed to tonify.
[Discussion] The flavor of mulberry is sweet and cold. Why does the substance parasitizing it have superior efficacy? Generally, heat damages blood, while cold causes blood to congeal. The transformation into a parasite utilizes this advantage, thereby excelling in benefiting blood vessels. As Mu Xi said, it is neither cold nor hot, making it suitable for treating deficiency. Regarding claims that it treats blood heat, this is inaccurate; such statements apply only to the mulberry tree itself.
Do not use if not genuine. Kou Zongshi stated that accidental ingestion of parasitic plants from other trees led to death within a month; therefore, exercise caution. Avoid fire and iron.