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Shigao ( Gypsum )---石膏(powder100g/bottle)

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Product Description

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This medicinal is the gypsum, pertaining to anhydrite of sulfate, mainly containing hydrous calcium sulfate ( CaSO4*2 H2O). Superior Shigao is atained from Yincheng,Hubei Province. It is collected in all seasons. After removing earth, sands and stones, it isgrounded in to powder for raw use or calcined for use.

[ Medicinal Properties ]: Sweet, pungent, and extremely cold; relate to lung and stomach meridians.

[ Medicinal Efficacies ]: Clear heat, purge fire; relieve agitation, stop thirst; heal wounds and promote tissue regeneration.

[ Usage and Dosage ]: 15-60 g. It is decocetd first. For external application, it is calcined and ground into powder.

[ Precautions ]: Avoid with deficiency-cold of spleen and stomach, and yin deficiency with internal heat.
 
[ Clinical Applications ]: 1. Excessive heat in qi level    Shigao is the most significant medicinal to clear excess heat in qi level of the lung and the stomach. It clears excess heat in the qi level, in warm disease, which is manifested as high fever, thirst, sweat, suring and full pulse. For these symptoms, Shigao and Zhimu are used together to create mutual reinforcement; for example in Baihu Decoction. In warm disease, with blazing of both qi and blood levels, manifesting as symptoms of coma. delirium, macula, it is combined with Mudanpi and Xuanshen; for example in Huaban Decoction.
 
2. Lung heat, cough and dyspnea     It treats cough and dyspnea due to lung heat, with fever and thirst. It is combined with Mahuang and Xingren; for example in Maxing Shigan Decoction.
 
3. Stomach fire, toothache, headache, Xiaoke ( diabetes)    It is indicated for swollen gums, with pain, due to up-flaming of stomach fire, in combination with Huanglian and Shengma; for example in Qingwei Powder. Also it treats Xiaoke (diabetes) which is due to up-flaming of stomach fire consuming body fluids, in combination with Zhimu, Shengdihuang and Maidong; for example in Yunv Decoction.
 
4. Ulcer, eczema itching and burns    Calcined , it has the function to heal wounds and promote tissue regeneration. It treats ulcers which fail to heal in combination with ground Hongfen Powder. Eczema, with itching, is treated by this medicinal alone, or with Qingdai and Huangbo.

石膏为硫酸盐类矿物硬石膏族石膏,主含含水硫酸钙(CaSO4·2H2O)。主产于湖北、甘肃、四川、安徽等地,以湖北应城产者最佳。全年可采。采挖后,除去泥沙及杂石,研细生用或煅用。
      
【药性】甘、辛,大寒。归肺、胃经。       
 
【功效】生用:清热泻火,除烦止渴;煅用:敛疮生肌,收湿,止血。       
 
【应用】        1.温热病气分实热证。本品性味辛甘寒,性寒清热泻火,辛寒解肌透热,甘寒清胃热、除烦渴,为清泻肺胃气分实热之要药。治温热病气分实热,症见壮热、烦渴、汗出、脉洪大者,常与知母相须为用,如白虎汤(《伤寒论》)。本品善清泻气分实热,若配清热凉血之玄参等,可治温病气血两燔,症见神昏谵语、发斑者,如化斑汤(《温病条辨》)。        本品既能清热泻火、除烦止渴,又能祛暑,配益气养阴之人参、麦冬等,可用治暑热初起,伤气耗阴或热病后期,余热未尽,气津两亏,症见身热、心烦、口渴者,如竹叶石膏汤(《伤寒论》)。       
 
2.肺热喘咳证。本品辛寒入肺经,善清肺经实热,配止咳平喘之麻黄、杏仁等,可治肺热喘咳、发热口渴者,如麻杏石甘汤(《伤寒论》)。       
 
3.胃火牙痛、头痛、消渴证。本品功能清泻胃火,可用治胃火上攻之牙龈肿痛,常配黄连、升麻等药用,如清胃散(《外科正宗》);若治胃火头痛,可配川芎用,如石膏川芎汤(《云歧子素问病机气宜保命集论类要》)。取本品清泻胃热,配知母、生地黄、麦冬等,可用治胃热上蒸、耗伤津液之消渴证,如玉女煎(《景岳全书》)。       
 
 4.溃疡不敛、湿疹瘙痒、水火烫伤、外伤出血。本品火煅外用,有敛疮生肌、收湿、止血等作用。用治溃疡不敛,可配红粉研末置患处,如九一散(《中国药典·2000年版》);用治湿疹瘙痒,可配枯矾用,如二味隔纸膏(《景岳全书》);用治湿疮肿痒,可配黄柏研末外掺,如石黄散(《青囊秘传》);若治水火烫伤,可配青黛用,如牡蛎散(《外台秘要》)。       
 
【用法用量】生石膏煎服,15-60g,宜先煎。煅石膏适量外用,研末撒敷患处。        【使用注意】脾胃虚寒及阴虚内热者忌用。       
 
【古籍摘要】        1.《神农本草经》:“主中风寒热,心下逆气,惊喘,口干舌焦,不能息,……产乳,金疮。”       
 2.《名医别录》:“除时气头痛身热,三焦大热,皮肤热,肠胃中膈热,解肌发汗;止消渴烦逆,腹胀暴气喘息,咽热。”       
3.《医学衷中参西录》:“石膏,凉而能散,有透表解肌之力。外感有实热者,放胆用之,直胜金丹。……是以愚用生石膏以治外感实热,轻症亦必至两许;若实热炽盛,又恒用至四、五两或七、八两,或单用,或与他药同用,必煎汤三、四杯,徐徐温饮下,热退不必尽剂。”       
 
【现代研究】        1.化学成分:本品的主要成分为含水硫酸钙(CaSO4·2H2O), 含量不少于95%。       
 2.药理作用:生石膏退热的动物实验,结论不甚一致。白虎汤有明显的解热作用;石膏浸液对离体蟾蜍心及兔心小剂量时兴奋,大剂量时抑制;石膏有提高肌肉和外周神经兴奋性的作用;对家兔离体小肠和子宫,小剂量石膏使之振幅增大,大计量则紧张度降低,振幅减小;石膏在Hands液中能明显增强兔肺泡巨噬细胞对白色葡萄球菌死菌及胶体金的吞噬能力,并能促进吞噬细胞的成熟;石膏液能使烧伤大鼠降低了的T细胞数、淋转百分率、淋转CPM值显著恢复;石膏有缩短血凝时间、利尿、增加胆汁排泄等作用。       
 3.临床研究:结合传统上用本品治疗肺热咳嗽的经验,用石膏配知母煎服,治急性肺炎、支气管炎、支气管周围炎有良效;据报道,用石膏120g,麻黄、桂枝各30g,研末,水煎多次分服,治疗发热病200例,有效181例(新中医,1980,6:28);用白虎加桂枝汤等治疗重症成人期特应性皮炎10例,服药1—3个月,均获显效(1991,4:42);用麻杏石甘汤治疗皮肤划痕症42例,获显著效果(临床皮肤科杂志,1999,2:79);用竹叶石膏汤为主治疗流行性出血热34例,均治愈(河南中医药学刊,2000,6:52);
另可用石膏等治疗糖尿病、麻风病神经痛、乙型脑炎、流感及外科炎症等。

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