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Xiebai ( Longstamen Onion Buld)---薤白(powder100g/bottle)

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Product Description

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It is the dried bulb of Allium macrostemon Bge. or Allium chinensis G. Don., family Liliaceae. The bulbs are dug and collected in summer and autumn. After the fibrous roots are removed, they are steamed thoroughly or scalded thoroughly in boiling water and then dried in the sunshine. The raw are used.

[ Medicinal Properties ]: Pungent, bitter and warm; relate to lung, stomach and large intestine meridians.

[ Medicinal Efficacies ]: Activate yang and dissipate accumulation; promote qi flow to remove stagnation.

[ Clinical Applications ]: 1. chest impediment with pain       For that caused by cold-phlegm and damp turbidity accumulated in chest and failure of yang qi to disperse, it is used with Banxia and Gualou in Gualou Xiebai Decoction; for that due to obstruction of congealing cold, usually with Danshen, Chuanxiong, Chishao.

2. Dysentery with tensmus       For qi stagnation in intestine and stomach manifested as dysentery with tenesmus, abdominal distensioin and diarrhea, it is combined with Muxiang and Zhishi; for dysentery with tenesmus due to damp-heat accumulation, with Huangbo and Qinpi.

[ Usage and Dosage ]: 5-9g.

[ Precautions ]: It is not advisable for patients with dysfunction of stomach and poor appetite and also for those who cannot bear the odor of garlic.

薤白为百合科植物小根蒜 Allium macrostemon Bge. 或薤 A.chinensis G. Don的地下干燥鳞茎。全国各地均有分布,主产于江苏、浙江等地。夏、秋二季采挖,洗净,除去须根,蒸透或置沸水中烫透,晒干。生用。

【药性】辛、苦,温。归肺、胃、大肠经。        【功效】通阳散结,行气导滞。       
 
【应用】        1.胸痹证。本品辛散苦降、温通滑利,善散阴寒之凝滞,通胸阳之闭结,为治胸痹之要药。治寒痰阻滞、胸阳不振所致胸痹证,常与瓜蒌、半夏、枳实等配伍,如瓜蒌薤白白酒汤、瓜蒌薤白半夏汤、枳实薤白桂枝汤等(《金匮要略》);若治痰瘀胸痹,则可与丹参、川芎、瓜蒌皮等同用。      
 
  2.脘腹痞满胀痛,泻痢里急后重。本品辛行苦降,有行气导滞、消胀止痛之功。治胃寒气滞之脘腹痞满胀痛,可与高良姜、砂仁、木香等同用;若治胃肠气滞,泻痢里急后重,可单用本品或与木香、枳实配伍。        TH
 
【用法用量】煎服,5~9g。       
 
【古籍摘要】        1.《本草纲目》:“治少阴病厥逆泄痢及胸痹刺痛,下气散血。”       
 
2.《长沙药解》:“肺病则逆,浊气不降,故胸膈痹塞;肠病则陷,清气不升,故肛门重坠。薤白,辛温通畅,善散壅滞,故痹者下达而变冲和,重者上达而化轻清。”       
 
3.《本草求真》:“薤,味辛则散,散则能使在上寒滞立消;味苦则降,降则能使在下寒滞立下;气温则散,散则能使在中寒滞立除;体滑则通,通则能使久痼寒滞立解。是以下痢可除,瘀血可散,喘急可止,水肿可敷,胸痹刺痛可愈,胎产可治,汤火及中恶卒死可救,实通气、滑窍、助阳佳品也。”       
 
 【现代研究】        1.化学成分:本品含大蒜氨酸、甲基大蒜氨酸、大蒜糖等,醇提取物含有前列腺素A1和B1等。       
 
2.药理作用:薤白提取物能明显降低血清过氧化脂质,抗血小板凝集,降低动脉脂质斑块,具有预防实验性动脉粥样硬化作用;薤白提取物对动物(大鼠、小鼠)心肌缺氧、缺血及缺血再灌注心肌损伤有保护作用;薤白煎剂对痢疾杆菌、金黄色葡萄球菌、肺炎球菌有抑制作用。      
 
  3.临床研究:以三参桂薤汤(丹参、苦参、红参、桂枝、薤白)加减,治疗室性早搏效果良好(湖南中医杂志,1985,3:17);瓜萎薤白愈心汤(瓜蒌、薤白、桂枝、红花、川芎等)治疗心绞痛62例,总有效率96.77%(四川中医,2000,9:30);瓜蒌薤白桂枝汤加味(瓜蒌壳、厚朴、枳壳、桂枝、薤白、法夏等)治疗慢性心功能不全128例(包括Ⅱ、Ⅲ、Ⅳ级),总有效率86.7%(四川中医,2000,12:19)。以苦参薤白汤(苦参、薤白、山楂、当归、木香等)治疗痢疾有很好疗效(浙江中医杂志,1993,1:31);
 
此外以薤白配剂(薤白、瓜蒌、半夏等为基本药物)辨证配伍其它药物治疗冠心病、急慢性支气管炎、阻塞性肺气肿、哮喘、液气胸,以及脾虚痰湿性胃炎均有不同程度疗效。

 


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