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Xuanshen ( Figwort Root )---玄参(powder100g/bottle)

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$19.12
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Product Description

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Xuanshen is the dried root of Scrophularia ningpoensis Hemsl., pertaining to Scrophulariaceae. It is collected in winter when the plant withers. After removing rhizome, plummule, fibrous root, earth and sands, it is sun dried or baked until half dried. After that ,it is piled up for 3-6 days, and this is repeated for several times until fully dried . The raw form is used.

[ Medicinal Properties ]: Sweet, bitter , salty, and slightly cold; relate to lung, stomach and kidney merridians.

[ Medicinal Efficacies ]: Cool blood, nourish yin; purge fire, and relieve toxicity.

[ Usage and Dosage ]: 10-15g.

[ Precautions ]: Be cautious with deficiecy-cold in spleen and stomach, poor appetite and loose stool. Mutual antagonistic with Lilu.
 
[ Clinical Applications ]: 1. Warm pathogen entering nutrient level, invading pericardium, warm-toxinosis and macula       In case of heat entering nutrient level, fever aggravated at nigh, agitatin, thirst, purple tongue and rapid pulse in warm disease, it is in combination with Shengdihuang, Danshen and Lianqiao; for example in Qingying Decoction. For pathogen invading pericardium in warm disease, manifesting as coma and delirium, it is in combinatin with Maidong, Zhuye and Lianqiaoxin, such as in Qinggong Decoction. Also it treats blazing of both qi and blood in warm disease, manifesting as macula, combined with Zhimu and Shigao; for example in Huaban Decoction.
 
2. Warm Disease, damage to yin, fluid consumption, constipation, bone-steaming and phthisic cough     It treats damage to yin warm disease and constipation due to fluid consumption, combined with Shengdihuang and Maidong; for example in Zengye Decoction. For bone-steaming and phthisic cough due to deficiency of lung-kidney yin, it is combined with Baihe, Shengdihuang and Beimu, such as in Baihe Gujin Decoction.
 
3. Reddish eyes, sore throat, scrofula, abscess and sore     It treats reddish and swollen eyes with pain due to excessive heat in liver meridian, combined with Zhizi, Dahuang and Lingyangjiao; For sore ad swollen throat, diphtheria due to prosperous pestilential toxin and heat, it is combined with Huangqin, Lianqiao and Banlangen; for example in Puji Xiaodu Decoction. In case of scrofula due to congestion of phlegm-fire, it is used with Zhebeimu and Muli; for example in Xiaoluo Pills. For finger-toe gangrene, it is combined with Jinyinhua, Danggui and Gancao; for example in Simiao Yongan Decoction.
 
[ Medicinal Comparison ]: Similarities: Both Shengdihuang and Xuanshen can clear heat, cool blood, nourish yin and generate fluid to treat heat entering nutrient-blood, damage to yin in warm disease and yin deficiency with internal heat.
 
Differences: Xuanshen is strong at purging fire and relieving toxicity to treat abscess, swelling, sores, toxin, swollen and sore throat. Shengdihuang is strong at clearing heat and cooling blood, usually to treat bleeding due to blood heat and Xiaoke ( diabetes) due to internal heat.

玄参为玄参科植物玄参Scrophularia ningpoensis Hemsl.的干燥根。产于我国长江流域及陕西、福建等地,野生、家种均有。冬季茎叶枯萎时采挖。除去根茎、幼芽、须根及泥沙,晒或烘至半干,堆放3—6天,反复数次至干燥。生用。
      
【药性】甘、苦、咸,微寒。归肺、胃、肾经。       
 
【功效】清热凉血,泻火解毒,滋阴。       
 
【应用】        1.温邪入营,内陷心包,温毒发斑。本品咸寒入血分而能清热凉血。治温病热入营分,身热夜甚、心烦口渴、舌绛脉数者,常配生地黄、丹参、连翘等药用,如清营汤(《温病条辨》);若治温病邪陷心包,神昏谵语,可配麦冬、竹叶卷心、连翘心等药用,如清宫汤(《温病条辨》);若治温热病,气血两燔,发斑发疹,可配石膏、知母等药用,如化斑汤(《温病条辨》)       
2.热病伤阴,津伤便秘,骨蒸劳嗽。本品甘寒质润,功能清热生津、滋阴润燥,可治热病伤阴,津伤便秘,常配生地黄、麦冬用,如增液汤(《温病条辨》);治肺肾阴虚,骨蒸劳嗽,可配百合、生地黄、贝母等药用,如百合固金汤(慎斋遗书》)       
 
 3.目赤咽痛,瘰疬,白喉,痈肿疮毒。本品性味苦咸寒,既能清热凉血,又能泻火解毒。用治肝经热盛,目赤肿痛,可配栀子、大黄、羚羊角等药用,如玄参饮(《审视瑶函》);若治瘟毒热盛,咽喉肿痛、白喉,可配黄芩、连翘、板蓝根等药用,如普济消毒饮(《东垣试效方》);取本品咸寒,有泻火解毒、软坚散结之功,配浙贝母、牡蛎,可治痰火郁结之瘰疬,如消瘰丸(《医学心悟》);若治痈肿疮毒,可以本品配银花、连翘、蒲公英等药用;若治脱疽,可配银花、当归、甘草用,如四妙勇安汤(《验方新编》)。       
 
【用法用量】煎服,10—15g。        【使用注意】脾胃虚寒,食少便溏者不宜服用。反藜芦。       
 
【鉴别用药】玄参与生地黄,均能清热凉血、养阴生津,用治热入营血、热病伤阴、阴虚内热等证,常相须为用。但玄参泻火解毒力较强,故咽喉肿痛、痰火瘰疬多用;生地黄清热凉血力较大,故血热出血、内热消渴多用。       
 
【古籍摘要】        1.《神农本草经》:“主腹中寒热积聚,女人产乳余疾,补肾气,令人目明。”        2.《名医别录》:“下水,止烦渴,散颈下核,痈肿。”        3.《本草纲目》:“滋阴降火,解斑毒,利咽喉,通小便血滞。”       
 
【现代研究】        1.化学成分:本品含哈巴苷、哈巴苷元、桃叶珊瑚苷、6-对甲基梓醇,渐玄参苷甲、乙等环烯醚萜类化合物及生物碱、植物甾醇、油酸、硬脂酸、葡萄糖、天冬酰胺、微量挥发油等。       
 2.药理作用:本品水浸剂、醇浸剂和煎剂均有降血压作用;其醇浸膏水溶液能增加小鼠心肌营养血流量,并可对抗垂体后叶素所致的冠脉收缩;本品对金黄色葡萄球菌、白喉杆菌、伤寒杆菌、乙型溶血性链球菌、绿脓杆菌、福氏痢疾杆菌、大肠杆菌、须发癣菌、絮状表皮癣菌、羊毛状小芽孢菌和星形奴卡氏菌均有抑制作用。此外,本品还有抗炎、镇静、抗惊厥作用。       
3. 临床研究:用玄参、麦冬、草决明,开水泡服,治疗慢性咽炎100例,痊愈78例,好转13例,(中西医结合杂志,1991,3:171); 用玄参、当归、天花粉、莱菔子,制为散剂内服,治习惯性便秘96例,痊愈86例,有效7例(河南中医,1992,5:240)。
此外,本品配相应药物,还用于治疗小儿高热、慢性前列腺炎、淋巴结肿大、乳腺增生等病证。

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