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Maidong (Dwarf Lilyturf Tuber )---麦冬(Powder100g/bottle)

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Product Description

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This medicial is the dried root tuber of Ophiopogon japonicus(Thunb.) KerGawl.(Fam. Liliaceae). It is excavated in the summer , dried by natural sunshine and piled repeatedly until it becomes 70%-80% dried. After removal of its rootlets , it is then crushed for utilization.

[ Medicinal Properties ]: Bitter, cold; relate to lung and kidney meridians.

[ Medicinal Efficacies ]: Nourish yin and promote fluid production; moisten lung and clear heart.

[ Clinical Applications ]: 1. Stomach yin deficiency syndrome    In combination with Shengdihuang and Yuzhu, it itreats deficiency of stomach yin due to heat, manifesting as dry mouth and tongue. For xiaoke (Similar to diabetes), it is combined with Tianhuafen and Wumei. It is combined with Banxia and Renshen to treat vomiting due to deficiency of stomach yin. To treat constipation due to pathogenic heat damaging fluid, it is prescribed with Shengdihuang and Xuanshen, as in the Zengye Decoction.

2. Lung yin deficiency syndrome   Prescribed with Ejiao, Shigao and Sangye, in Qingzao Jiufei Decoction, it treats yin deficiency with dryness-heat in the lung, manifesting as dry nose and throat, dry cough with little phlegm, sore throat and hoarse voice.

3. Heart yin deficiency syndrome   To treat deficiency of heart yin, manifested as dysphoria, insomnia, dream-disturbed sleep, amnesia, palpitations and fearful throbbing, it is prescribed with Shengdihuang and Suanzaoren, as in the Tianwang Buxin Pills. To treat dysphoria and hyposomnia, due to heat invading heart-nutrient level, it is used in combination with Huanglian and Shengdihuang.

[ Usage and Dosage ]: 6-12g.

麦冬为百合科植物麦冬Ophiopogon japonicus(Thunb.)Ker-Gawl.的块根。主产于四川、浙江、江苏等地。夏季采挖,反复暴晒、堆置,至七八成干,除去须根,干燥,打破生用。

       【药性】甘、微苦,微寒。归胃、肺、心经。        【功效】养阴生津,润肺清心。       
 
【应用】        1.胃阴虚证。本品味甘柔润,性偏苦寒,长于滋养胃阴,生津止渴,兼清胃热。广泛用于胃阴虚有热之舌干口渴,胃脘疼痛,饥不欲食,呕逆,大便干结等症。如治热伤胃阴,口干舌燥,常与生地、玉竹、沙参等品同用。治消渴,可与天花粉、乌梅等品同用。与半夏、人参等同用,治胃阴不足之气逆呕吐,如麦门冬汤(《金匮要略》)。与生地、玄参同用,治热邪伤津之便秘,如增液汤(《温病条辨》)。       
 
 2.肺阴虚证。本品又善养肺阴,清肺热,适用于阴虚肺燥有热的鼻燥咽干,干咳痰少、咳血,咽痛音哑等症常与阿胶、石膏、桑叶、枇杷叶等品同用,如清燥救肺汤(《医门法律》)。       
 
3.心阴虚证。本品可归心经,还能养心阴,清心热,并略具除烦安神作用。可用于心阴虚有热之心烦、失眠多梦、健忘、心悸怔忡等症。宜与养阴安神之品配伍,如天王补心丹(《摄生秘剖》)以之与生地、酸枣仁、柏子仁等品同用。热伤心营,神烦少寐者,宜与清心凉血养阴之品配伍,如清营汤(《温病条辨》)以之与黄连、生地、玄参等品同用。       
 
【用法用量】煎服,6~12g。       
 
【古籍摘要】        1.《神农本草经》:“主心腹结气……胃络脉绝,羸瘦短气”。       
 
2.《本草汇言》:“清心润肺之药。主心气不足,惊悸怔忡,健忘恍惚,精神失守;或肺热肺燥,咳声连发,肺痿叶焦,短气虚喘,火伏肺中,咯血咳血;或虚劳客热,津液干少;或脾胃燥涸,虚秘便难”。       
 
【现代研究】        1.化学成分:本品含多种甾体皂苷、β-谷甾醇、豆甾醇、高异黄酮类化合物、多种氨基酸、各种类型的多聚糖、维生素A样物质、铜、锌、铁、钾等成分。      
 
  2.药理作用:家兔用麦冬煎剂肌内注射,能升高血糖;正常兔口服麦冬的水、醇提取物则有降血糖作用;麦冬能增强网状内皮系统吞噬能力,升高外周白细胞,提高免疫功能;能增强垂体肾上腺皮质系统作用,提高机体适应性;能显著提高实验动物耐缺氧能力,增加冠脉流量,对心肌缺血有明显保护作用,并能抗心律失常及改善心肌收缩力;有改善左心室功能与抗休克作用;还有一定镇静和抗菌作用。       
 
3.临床研究:据报道,以麦门冬汤(麦冬、人参、半夏、甘草、大枣、粳米)治疗虚热证梅核气、便血、经行鼻衄患者有较好疗效(河南中医,2000,5:9)。以人参、北五味子各6g,红参3g,煎水代茶饮,1日1剂,2个月为1疗程,治疗脑功能轻微障碍综合征36例,治愈8例,显效12例,好转15例(中医杂志,1992,1:32);用参麦注射液治疗急性病毒性心肌炎76例,并合用适当的抗心律失常药,显效54例,有效14例,无效8例(浙江中医杂志,1988,8:369);
 
本品还有用于失眠、肺炎、慢性咽炎、小儿支气管哮喘、肺原性心脏病等疾病的报道。

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