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Gegen ( Kudzuvine Root/Radix Purariae )---葛根(powder100g/bottle)

Price:
$18.72
Weight:
0.30 LBS
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Calculated at checkout


Product Description

gegen-yuantai-l.jpggegen-yaocai-l.jpg010.png

Gegeng is teh dried root of Pueraria lobata ( Willd ) Ohwi, pertainint to Leguminosae, often called Yege. It is collected in fall and winter. It is cut into thick slices or little dices when it is fresh, and then dried. The raw form is used or after roasted.

[ Medicinal properties ]: Sweet , pungent and cool; relate to spleen and stomach meridians.

[ Medicinal Efficacies ]: Relieve muscles, subdue fever; generate fluid, promote eruption; raise yang and stop diarrhea.

[ Usage and Dosage ]: 9-15 g. To relieve muscle, subdue fever, promote eruption and generate fluid, the raw form is used. To raise yang and stop diarrhea, it is roasted for use.

[ Annotation ]: Gehua is the blossom bud of Yege. Sweet and neutral. It can relieve alcoholism and activate spleen to treat headache, dizziness, irritation, thirst, vomiting, fullness and distension in chest and diaphragm due to alcoholism.Dosage 3-15 g.
 
[ Clinical Applications ]: 1. Exterior syndrome, fever, spasm and pain of nape and back     It treats wind-heat exterior syndrome, with fever and headache, in combination with Bohe, Juhua and Manjingzi. Also it treats pathogen accumulation transforming into heat in common cold due to wind-cold, which manifests as strong fever, mild aversion to cold, headache, no sweat, eye pain, and dry nose, in combination with Chaihu, Huangqin and Baizhi; for example in Chaige Jieji Decoction. It is indicated for common cold due to wind-cold, manifesting as exterior excess without sweating, aversion to cold, spasm and pain of nape and back, in combination with Mahuang and Guizhi.
 
2. Warm disease, thirst and Xiaoke(diabetes)     For fluid consumption with thirst in warm disease, it is in combination with Lugen, Tianhuafen. In case of Xiaoke ( diabetes) due to internal heat, manifesting as thirst, drinking lot, emaciation, lassitude, deficiency of qi and yin, it is in combination with Wumei, Tianghuafen and Maidong ; for example in Yuquan Pills.
 
3. Measles failing to erupt     It treats in the early stage measles failing to erupt, in combination with Shengma, Shaoyao and Gancao, such as in Shengma Gegen Decoction.
 
4. Heat diarrhea, heat dysentery, and spleen deficiency with diarrhea    It treats exterior syndrome unrelieved with pathogenic heat entering interior, manifesting as fever, stink and turbid stool, hot sensation in anus, yellowish coating, rapid pulse, and diarrhea or dysentery due to damp heat, with more heat and less dampness, in combination with Hauangqin, Huanglian and Gancao; for example in Gengen Huangqin Huanglian Decoction. Also it treats diarrhea due to spleen insufficiency, in combination with Renshen, Baizhu and Muxiang; for example in Qiwei Baizhu Powder.
 
Nowadays it treats hypertensive encephalopathy, for it can effectively improve symptoms such as headache, dizziness, spasm of nape, tinnitus, numbness of body and limbs, such as in Yufeng Ningxin Tablet.

[ Medicinal Comparison ]: Similarities: Chaih, Shengma and Gegen, all can relieve exterior and raise yang, to treat external contraction of wind-heat, manifesting as fever, headache, and qi deficiency with sinking, manifesting as prolapse of rectum, stomach, kidneys,uterus, and other viscera. Bothshengma and Gegen can promote eruption of measles to treat measles failing to erupt in the early stage.
 
Differences: Chaihu mainly raises qi of liver and gallbladder, and is good at relieving pathogen in shaoyang level, half-interior and half-exterior, to treat alternating chills and fever, distress fullness in chest and hypochondria, bitter taste in mouth, dry throat and dizzy vision. Also it can treat fever in common cold and distending pain in hypochondria, menstrual irregularities and dysmenorrheal, due to liver depression with qi stagnation. Shengma mainly raises clear yang of spleen and stomach ,and is stronger than Chaihu in raising. Also it can clear heat and relieve toxicity to treat various heat toxin diseases. Gegen mainly raises clear yang of spleen and stomach to generate fuluid, stop thirst and stop diarrhea. It can treat irritation and thirst in warm disease, Xiaoke( diabetes) due to yin deficiency, heat diarrhea, heat dysentery, and diarrhea due to spleen insufficiency. Also it can relieve muscle and subdue heat to treat external contractionof exterior syndrome, manifesting as fever, aversion to cold, headache, no sweat,spasm and pain of nape and back, due to wind-cold or wind-heat.

葛根为豆科植物野葛Pueraria lobata (Willd.)Ohwi或甘葛藤Pueraria thomsonii Benth.的干燥根。野葛主产于湖南、河南、广东、浙江、四川等省;甘葛藤多为栽培,主产于广西、广东等省,四川、云南地区亦产。秋、冬二季采挖,野葛多趁鲜切成厚片或小块,干燥;甘葛藤习称“粉葛”,多除去外皮,用硫黄熏后,稍干,截段或再纵切两半,干燥。生用,或煨用。
      
【药性】甘、辛,凉。归脾、胃经。       
 
【功效】解肌退热,透疹,生津止渴,升阳止泻。       
 
【应用】        1.表证发热,项背强痛。本品甘辛性凉,轻扬升散,具有发汗解表,解肌退热之功。外感表证发热,无论风寒与风热,均可选用本品。治疗风热感冒,发热、头痛等症,可与薄荷、菊花、蔓荆子等辛凉解表药同用。若风寒感冒,邪郁化热,发热重,恶寒轻,头痛无汗,目疼鼻干,口微渴,苔薄黄等症,常配伍柴胡、黄芩、白芷、羌活等药,如柴葛解肌汤(《伤寒六书》)。本品既能辛散发表以退热,又长于缓解外邪郁阻、经气不利、筋脉失养所致的颈背强痛,故风寒感冒,表实无汗,恶寒,项背强痛者,常与麻黄、桂枝等同用,如葛根汤(《伤寒论》);若表虚汗出,恶风,项背强痛者,常与枝枝、白芍等配伍,如桂枝加葛根汤(《伤寒论》)。       
 
2.麻疹不透。本品味辛性凉,有发表散邪,解肌退热,透发麻疹之功,故可用治麻疹初起,表邪外束,疹出不畅,常与升麻、芍药、甘草等同用,如升麻葛根汤(《阎氏小儿方论》)。若麻疹初起,已现麻疹,但疹出不畅,见发热咳嗽,或乍冷乍热者,可配伍牛蒡子、荆芥、蝉蜕、前胡等药,如葛根解肌汤(《麻科活人全书》)。       
 
3.热病口渴,消渴证。本品甘凉,于清热之中,又能鼓舞脾胃清阳之气上升,而有生津止渴之功。用治热病津伤口渴,常与芦根、天花粉、知母等同用。治疗消渴证属阴津不足者,可与天花粉、鲜地黄、麦门冬等清热养阴生津药配伍,如天花散(《仁斋直指方》);若内热消渴,口渴多饮,体瘦乏力,气阴不足者,又多配伍乌梅、天花粉、麦冬、党参、黄芪等药,如玉泉丸(《沈氏尊生书》)。        4.热泄热痢,脾虚泄泻。本品味辛升发,能升发清阳,鼓舞脾胃清阳之气上升而奏止泻痢之效,故可用治表证未解,邪热入里,身热,下利臭秽,肛门有灼热感,苔黄脉数,或湿热泻痢,热重于湿者,常与黄芩、黄连、甘草同用,如葛根芩连汤(《伤寒论》)。若脾虚泄泻,常配伍人参、白术、木香等药,如七味白术散(《小儿药证直诀》)。       
 
此外,葛根能直接扩张血管,使外周阻力下降,而有明显降压作用,能较好缓解高血压病人的“项紧”症状,故临床常用治高血压病颈项强痛,如北京同仁堂生产的愈风宁心片即由葛根一味药组成。       
【用法用量】煎服,9~15g。解肌退热、透疹、生津宜生用,升阳止泻宜煨用。       
 
【鉴别用药】柴胡、升麻、葛根三者皆能发表、升阳,均可用治风热感冒、发热、头痛,以及清阳不升等证。其中:柴胡、升麻两者均能升阳举陷,用治气虚下陷,食少便溏、久泻脱肛、胃下垂、肾下垂、子宫脱垂等脏器脱垂;升麻、葛根两者又能透疹,常用治麻疹初起、透发不畅。但柴胡主升肝胆之气,长于疏散少阳半表半里之邪、退热,疏肝解郁,为治疗少阳证的要药。又常用于伤寒邪在少阳,寒热往来、胸胁苦满、口苦咽干、目眩;感冒发热;肝郁气滞,胸胁胀痛、月经不调、痛经等证。升麻主升脾胃清阳之气,其升提(升阳举陷)之力较柴胡为强,并善于清热解毒,又常用于多种热毒病证。葛根主升脾胃清阳之气而达到生津止渴、止泻之功,常用于热病烦渴,阴虚消渴;热泄热痢,脾虚泄泻。同时,葛根解肌退热,对于外感表证,发热恶寒、头痛无汗、项背强痛,无论风寒表证、风热表证,均可使用。       
 
【古籍摘要】        1.《神农本草经》:“主消渴,身大热,呕吐,诸痹,起阴气,解诸毒。”      
  2.《名医别录》:“疗伤寒中风头痛,解肌发表,出汗,开腠理,疗金疮,止痛,胁风痛。”“生根汁,疗消渴,伤寒壮热。”       
3.《药性论》:“治天行上气,呕逆,开胃下食,主解酒毒,止烦渴。熬屑治金疮,治时疾解热。”       
 
【现代研究】        1.化学成分:本品主要含黄酮类物质如大豆苷、大豆苷元、葛根素等,还有大豆素-4,7-二葡萄糖苷、葛根素-7-木糖苷,葛根醇、葛根藤素及异黄酮苷和淀粉。      
  2.药理作用:葛根煎剂、醇浸剂、总黄酮、大豆苷、葛根素均能对抗垂体后叶素引起的急性心肌缺血。葛根总黄酮能扩张冠脉血管和脑血管,增加冠脉血流量和脑血流量,降低心肌耗氧量,增加氧供应。葛根能直接扩张血管,使外周阻力下降,而有明显降压作用,能较好缓解高血压病人的“项紧”症状。葛根素能改善微循环,提高局部微血流量,抑制血小板凝集。葛根有广泛的β-受体阻滞作用。对小鼠离体肠管有明显解痉作用,能对抗乙酰胆碱所致的肠管痉挛。葛根还具有明显解热作用,并有轻微降血糖作用。       
3.临床研究:①据报道,在辨证用药的基础上加用葛根治疗病毒性心肌炎所致的心率失常,与不用葛根的病例相比,前者可明显缩短用药时间,并且效果显著,主要体现在具有抗心率失常的作用,特别是对缓慢性心率失常者有提高心率的作用(中医杂志,1999,40(4):198)。
②临床观察,脑梗死患者在使用葛根素后可使全血粘度、血浆粘度、血沉等显著改善,红细胞变形能力增强、聚集性降低,增快血液流速,增加红细胞携氧能力,有助于改善脑组织缺氧,扩张脑血管及外周血管,可适用于脑梗死的各期患者(中国新药与临床杂志,1998,17(2):120)。
③葛根黄酮有扩张脑及内耳血管的作用,改善内耳循环,促进耳聋的治愈。用葛根黄酮片治疗神经性耳聋耳鸣68例,总有效率为88.2%,治疗耳病性眩晕82例,总有效率为89%(中医杂志,1999,40(3):133)。
④葛根素注射液可加速乙醇在体内的代谢和排泄,治疗急性乙醇中毒82例,结果表明葛根素注射液可显著缩短苏醒时间和苏醒后头痛消失时间(实用中医药杂志,2000,16(12):34)。
此外,葛根还可用治血管神经性头痛、颈椎病、肩周炎、痛风性关节炎、急性风湿热、中暑、抽动-秽语综合征、痛经、变态反应性疾病、迟发性运动障碍、β受体功能亢进症、内痔、慢性鼻窦炎等病。       
 
 附药 葛花        为葛的未开放的花蕾。性味甘,平。功能解酒毒,醒脾和胃。主要用于饮酒过度,头痛头昏、烦渴、呕吐、胸膈饱胀等症。常用量3~15g。       

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