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Mangxiao ( Sodium Sulfate )---芒硝

Price:
$7.87
Weight:
1.00 LBS
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Product Description

mangxiao-yuantai-l.jpgmangxiao-yinpian-l.jpg

The chinese medicinal is the refined crystalline sodium sulphate, usually made from natural sources natrii sulfas as its chief component. The natural sources are melted in the hot water, filtered and cooled to separate crystals out. The products are generally called Pixiao. Then they are boiled together with levigated turnip chips and superjacent fluid is taken out to cool. The crystals separated out are Mangxiao. Mangxiaocan be become white powder named as Xuanmingfen by efflorescence.

[ Medicinal Properties ]: Salty ,bitter,cold; relate to stoach and large intestine meridians.

[ Medicinal Efficacies ]: Soften dired feces to induce downward discharging; clear heat; dissipate swelling

[ Usage and Dosage ]: 6-12g. It is dissolved in a decoction or in boiling water to use orally. The appropriate amount is for external use.

[ Precautions ]: It shold be used carefully, or contraindicated during pregnancy or lactation.
 
[ Clinical Applications ]: 1. Stagnation and constipation      It is salty and good at purging, softening hardness and moistening dryness. It is suitable for constipation due to dry feces and stagnation of excess heat. It is frequently used together with Dahuang, such as in Dachengqi Decoction, Tiaowei Chengqi Decoction. It is recently indicated to treat abdominal pain and constipation due to gall stone.
 
2. Sore throat, aphthae, redness of eyes and swelling and sore of carbuncles External use of it can clear heat and subside a swelling. For sore throat and aphthae, it is used together with Pengsha, Bingpian, Zhusha, such as in Bingpeng Powder. It can also be put in watermelon and prepared into Xiagua Cream forexternal use. And it can beused for eye drops to treat bloodshot eyes. Besides, it can be wrapped with gauze or dissolved in water for external application to treat early stage of mastitis. It is also combined with Dahuang and garlic, which are ground int opieces for external use to treat the early stage of intestinal abscess. In addition, it is also decocted singly for wash to treat haemorrhoids and swelling pain.
 
[ Medicinal comparison ]: Similarites:  Dahuang and mangixao can both clear heat and purge the bowels. They are frequently used as mutual reinforcement for stagnation of excess heat and constipation. They are both suitable for excess fire, manifesting as sore throat, oral ulcer of the eye, pyocutaneous conditions and carbuncles.
 
Differences: Dahuang is more bitter and stronger in its purgative action, so it is an essential medicinal for constiopation due to heat stagnation. Dahuang can cool blood, resolve toxin , activate blood, resolve stasis and clear damp-heat. It is indicated to treat bleeding, which is due to blood-heat, excess-heat, blood-stasis, as wellas, damp-heat type jaundice. Mangxiao is salty and good at softening hardness and moistening dryness. So it is suitable for stagnation of dry feces due to excess heat. It can clear heat and dissipate swelling for external use to treat mastitis, sore and red eyes. In addition, it can stop lactation.

芒硝为含硫酸钠的天然矿物经精制而成的结晶体。主含含水硫酸钠(Na2SO4·10H2O)。主产于河北、河南、山东、江苏、安徽等地。将天然产品用热水溶解,滤过,放冷析出结晶,通称“皮硝”。再取萝卜洗净切片,置锅内加水与皮硝共煮,取上层液,放冷析出结晶,即芒硝。以青白色、透明块状结晶、清洁无杂质者为佳。芒硝经风化失去结晶水而成白色粉末称玄明粉(元明粉)。
      
【药性】咸、苦,寒。归胃、大肠经。       
 
【功效】泻下攻积,润燥软坚,清热消肿。       
 
【应用】        1.积滞便秘。本品能泻下攻积,且性寒能清热,味咸润燥软坚,对实热积滞,大便燥结者尤为适宜。常与大黄相须为用,以增强泻下通便作用,如大承气汤、调胃承气汤(《伤寒论》)。近来临床亦常用于胆石症腹痛便秘者。       
 
 2.咽痛、口疮、目赤及痈疮肿痛。本品外用有清热消肿作用。治咽喉肿痛、口舌生疮,可与硼砂、冰片、朱砂同用,如冰硼散(《外科正宗》),或以芒硝置西瓜中制成的西瓜霜外用;治目赤肿痛,可用芒硝置豆腐上化水或用玄明粉配制眼药水,外用滴眼;治乳痈初起,可用本品化水或用纱布包裹外敷;治肠痈初起,可与大黄、大蒜同用,捣烂外敷;治痔疮肿痛,可单用本品煎汤外洗。       
 
 【用法用量】10~15g,冲入药汁内或开水溶化后服。外用适量。        【使用注意】孕妇及哺乳期妇女忌用或慎用。       
 
【鉴别用药】芒硝、大黄均为泻下药,常相须用治肠燥便秘。然大黄味苦泻下力强,有荡涤肠胃之功,为治热结便秘之主药;芒硝味咸,可软坚泻下,善除燥屎坚结。       
 
【古籍摘要】        1.《神农本草经》:“除寒热邪气,逐六腑积聚、结固、留癖,能化七十二种石。”        2.《珍珠囊》:“其用有三:去实热,一也;涤肠中宿垢,二也;破坚积热块,三也。”        3.《药品化义》:“味咸软坚,故能通燥结;性寒降下,故能去火烁。主治时行热狂,六腑邪热,或上焦膈热,或下部便坚。”       
 
【现代研究】        1.化学成分:主要含硫酸钠,尚含少量氯化钠、硫酸镁、硫酸钙等无机盐。     
  2.药理作用:芒硝所含的主要成分硫酸钠,其硫酸根离子不易被肠壁吸收,存留肠内形成高渗溶液,阻止肠内水分的吸收,使肠内容积增大,引起机械刺激,促进肠蠕动而致泻。   
 
  3.临床研究:据报道,以芒硝为主或适当配伍还可用于治疗其它多种疾病,如:芒硝内服,每日2次,每次成人2~4g,治疗117例大骨节病,总有效率达79%(甘肃卫生通讯,1972,4:23);用芒硝100g,配伍海金沙100g,苏琥珀40g,南硼砂20g,共为细末,组成金铂消石散,用治砂石淋(首批国家级名老中医效验秘方精选·国际文化出版社,1996,456)。另有用芒硝等治疗腮腺炎、胆道蛔虫症、顽固性皮肤瘙痒等。       

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