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Baiguo (Ginkgo Seed)---白果

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$23.65
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Product Description

baiguo-yuantai-l.jpgbaiguo-yaocai-l.jpg

It is the dried ripe seed of Ginkgo biloba L.,family Ginkgoaceae. The ripe seeds are collected in autumn. After the episperms are removed, they are washed clean and then dried after being steamed or boiled for a while. With crust removed, the raw or stir-baked ones are used.

[ Medicinal Properties ]: Sweet,bitter,astringent,neutral and toxic; relate to lung meridian.

[ Medicinal Efficacies ]: Astringe lung to relieve dyspnea; stop leukorrhagia, reduce urination.

[ Clinical Applications ]: 1. Cough, adverse rise of qi, profuse sputum       For cough and dyspnea with sputum, it is combined with Mhuang and Gancao, such as Yazhang Powder; for lung heat and phlegm dyspnea with rapid respiration, with Huangqin and Sangbaipi, such as Dingchuan Decoction.

2. Turbid leukorrhea      For lower energizer deficiency and thin leucorrhea, it is uaually boiled and eaten together with LIanzi, Hujiao and black-bone chicken. For yellowish and fishy leukorrhea due to down-pour of damp-heat, it is combined with Huangbo and Qianshi in Yihuang Decoction; for turbid leukorrhea, usually with Bixie and Yizhi.

3. Frequent urination, enuresis      It is usually combined with Shudihuang and Shanzhuyu.

[ Usage and Dosage ]: 4.5-9g.

[ Precautions ]: Over dosage should be avoided, especially for infants. It is used cautiously in cases of cough and thick sputum.

[ Side Effects ]: Over dosage may cause poisoning, manifested as vomiting, abdominal pain, diarrhea, fever, cyanosis, coma, convulsions and even death due to respiratory numbness in severe case.

[ Annotation ]: Yinxingye       It is the leaf of Ginkgo biloba L., collected in autumn when the leaf is green and then dried. It is sweet, bitter, astringent, neutral and relates to the lung meridian. It astringes lung to relieve dyspnea and promotes blood circulation to alleviate pain, so it treats cough and dyspnea due to lung deficiency, hyperlipemia, hypertension, coronary heart disease, angina and cerebral vasospasm.The dosage is 9-12g. It is also made into pills or injections. It is not suitable for those contracted by pathogenic factors of excess type.

白果为银杏科植物银杏Gimkgo biloba L.的成熟种子。全国各地均有栽培。主产于广西、四川、河南、山东、湖北。秋季种子成熟时采收,除去肉质外种皮,洗净,稍蒸或略煮后烘干。用时打碎取种仁,生用或炒用。

       【药性】甘、苦、涩,平。有毒。归肺经。        【功效】敛肺化痰定喘,止带缩尿。       
 
【应用】        1.哮喘痰嗽。本品性涩而收,能敛肺定喘,且兼有一定化痰之功,为治喘咳痰多所常用。治寒喘由风寒之邪引发者,配麻黄辛散,敛肺而不留邪,开肺而不耗气,如鸭掌散(《摄生众妙方》);如肺肾两虚之虚喘,配五味子、胡桃肉等以补肾纳气,敛肺平喘;若外感风寒而内有蕴热而喘者,则配麻黄、黄芩等同用,如定喘汤(《摄生众妙方》)。若治肺热燥咳,喘咳无痰者,宜配天门冬、麦门冬、款冬花以润肺止咳。       
 
 2.带下,白浊,尿频,遗尿。本品收涩而固下焦。治妇女带下,属脾肾亏虚,色清质稀者最宜,常配山药、莲子等健脾益肾之品而用;若属湿热带下,色黄腥臭者,也可配黄柏、车前子等,以化湿清热止带,如易黄汤(《傅青主女科》)。治小便白浊,可单用或与萆薢、益智仁等同用,遗精、尿频、遗尿,常配熟地、山萸肉、覆盆子等,以补肾固涩。        【用法用量】煎服,5~10g,捣碎。       
 
【使用注意】本品有毒,不可多用,小儿尤当注意。过食白果可致中毒,出现腹痛、吐泻、发热、紫绀以及昏迷、抽搐,严重者可呼吸麻痹而死亡。       
 
【古籍摘要】        1.《医学入门》:“清肺胃浊气,化痰定喘,止咳。”       
 
2.《本草纲目》;“熟食温肺益气,定喘嗽,缩小便,止白浊;生食降痰,消毒杀虫;嚼浆涂鼻面手足,去皶疱,皴皱及疥癣、疳、阴虱。”“食多则收令太过,令人气壅胪昏顿。……《三元延寿书》言昔有饥者,同以白果代饭食饱,次日皆死也。”        3.《本草便读》:“上敛肺金除咳逆,下行湿浊化痰涎。”       
 
【现代研究】        1.化学成分:种子含蛋白质、脂肪、淀粉、氰苷、维生素B2及多种氨基酸;外种皮含有毒成分白果酸、氢化白果酸、白果酚、白果醇等。肉质外种皮含白果酸、氢化白果酸、氢化白果亚酸、银杏二酚、白果醇和黄酮类化合物。       
 
2.药理作用:能抑制结核杆菌的生长,体外对多种细菌及皮肤真菌有不同程度的抑制作用。乙醇提取物有一定的祛痰作用,对气管平滑肌有微弱的松弛作用。白果二酚有短暂降压作用,并引起血管渗透性增加。银杏外种皮水溶性成分能清除机体超氧自由基,具有抗衰老作用,还具有免疫抑制及抗过敏作用        3.临床研究:白果仁,有恶心呕吐者加干姜,研末服,治美尼尔氏综合征,一般4~8次可愈( 中医杂志,1986,1:63);带壳生白果,文火煎服。治疗神经性头痛1O例,大多1剂见效[中医杂志,1982,4:72);白果仁,切出平面,频搓患部,治疗酒刺116例,均获效,一般用药7~14次可愈(新中医,1982,4:72)。       
 
4.不良反应:银杏毒性成分为银杏毒及白果中性素(白果酸、白果醇及白果酚等)。银杏毒有溶血作用,服用量过大,易中毒,生品毒性更大,而以绿色胚芽最毒。白果的毒性成分能溶于水,加热可被破坏,故本品熟用毒性小,若做为食品,应去种皮、胚芽,浸泡半天以上,煮熟透后才可食用。一般中毒症状为恶心呕吐,腹痛腹泻,发热,烦躁不安,惊厥,精神萎顿,呼吸困难,紫绀 ,昏迷,瞳孔对光反应迟钝或消失;严重者可因呼吸中枢麻痹而死亡。解救方法:服后2~3小时内,应洗胃,导泻,利尿,服鸡蛋清或活性炭,以减轻毒素的继续吸收;呼吸困难及紫绀者,给氧,并予呼吸兴奋剂;惊厥抽搐者,给予安定、苯巴比妥等镇静,抗惊厥药,静脉注射高渗葡萄糖,及其他对症处理,中药可用甘草30g,水煎服,或白果壳30~60g,水煎服,或用木香适量用开水磨汁,入麝香少许服之。       
 
 附药 银杏叶        为银杏树的叶,主要成分为银杏黄酮。性味苦、涩,平。功能敛肺平喘,活血止痛。用于肺虚咳喘,以及高血脂、高血压、冠心病心绞痛、脑血管痉挛等。煎服5~10g,或制成片剂、注射剂。

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