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Shiwei ( Shearer's Pyrrosia Leaf )---石韦(powder100g/bottle)

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Product Description

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It is the dried leaf of Pyrrosia shearer ( Bak.) Ching, or Pyrrosia lingua( Thunb.) Farwell, or Pyrrosia patiolosa ( Christ) Ching. family Japanese polypody rhizome. It is able to be collected all the year round. Firstly, the rootstalk and roots are removed, then it is cut into segments ,dried in the sunshine, or in the shade, and the raw form is used as a meidicine.

[ Medicinal Properties ]: Sweet , bitter and slightly cold; relate to lung and bladder meridians.

[ Medicinal Efficacies ]: Promote diuresis to relieve stranguria; clear away lung to stop cough; cool blood to stop bleeding.

[ Usagd and Dosage]: 6-12g. It is utilized orally.

[ Clinical Applications]: 1. Stranguria sydrome. In order to treat stony stranguria, it is combined with Jinqiancao, Haijinsha and Cheqianzi. For blood stranguria, it is combined together with Puhuang. In the treatment of heat stranguria, it is combination together with Cheqianzi, Huashi and Qumai.

2. Dyspnea and cough due to lung heat. It can be used with Binglang, in equal amounts, ground into powder, and taken orally, such as in formula Shiwei Powder.

3. Hemorrhage due to blood heat . In treating hematemesis, nose-bleeding, hematuria, metrorrhagia and metrostaxis due to blood-heat, it can be combined with Diyu, Huaihua, Xiaoji.

石韦为水龙骨科植物庐山石韦Pyrrosia sheareri (Bak.)Ching和石韦P. lingua(Thunb.) Farwell或有柄石韦P. petio1osa (Christ) Ching的干燥叶。各地普遍野生。主产于浙江、湖北、河北等地。全年均可采收。除去根茎及根,拣去杂质,洗去泥沙,晒干或阴干,切段,生用。
      
【药性】甘、苦,微寒。归肺、膀胱经。        【功效】利尿通淋,清肺止咳,凉血止血。       
 
【应用】        1.淋证。本品药性寒凉,清利膀胱而通淋,兼可止血,尤宜于血淋。对膀胱湿热见小便淋沥涩痛诸淋者,也常应用。用于血淋,与当归、蒲黄、芍药同用,如石韦散《千金方》;用于热淋,如《圣惠方》以本品与滑石为末服;用于石淋,如《古今录验》石韦散,与滑石为末,用米饮或蜜冲服。       
 
2.肺热咳喘。石韦入肺经,清肺热,止咳喘。用于肺热咳喘气急,可与鱼腥草、黄芩、芦根等同用。       
 
3.血热出血。石韦既止血又凉血,故对血热妄行之吐血、衄血、尿血、崩漏尤为适合。可单用或随证配伍侧柏叶、栀子、丹参等同用。       
 
【用法用量】煎服, 6~12g。      
 
  【古籍摘要】        1.《神农本草经》:“主劳热邪气,五癃闭不通,利小便水道”。        2.《本草纲目》:“主崩漏金疮,清肺气”       
 
 【现代研究】        1.化学成分:石韦含β—谷甾醇、芒果苷、异芒果苷、延胡索酸等。       
 
 2.药理作用:石韦煎剂对金黄色葡萄球菌、变形杆菌、大肠杆菌等有不同程度的抑制作用。有抗病毒,镇咳,祛痰作用。        3.临床研究:据报道,有柄石韦叶20片左右,水煎服;治急性肾盂肾炎,多有效(中草药新医疗法展览会技术资料选编(内科疾病).1970.65)。 用石韦、鸡血藤、太子参、陈皮、阿胶,煎服2~6个月,可使周围血象三系恢复正常(中西医结合杂志,1989,9(1):9)。
 
石韦还可治疗乳糜尿,尿路结石,慢性支气管炎,支气管哮喘,放疗或化疗引起的白细胞减少症。

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