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Cishi (Magnetite )---磁石(powder100g/bottle)

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Product Description

010.pngIt is the magnetic iron magnetite, mainly contains Fe3o4. It is mined at any tie and got rid of the impurity of stone. It is used in raw form or quenched with vinegar and ground into powder for mediciation.

[ Medicinal Properties] : Salty and cold; relate to liver, heart and kidney meridians.

[ Medicinal Efficacies ]: Calm mind; pacify liver to subdue yang; improve auditory and visual acuity; improve inspiration and relieve dyspnea.

[ Clinical Applications ]: 1. Irritability, fright palpitation, insomnia and epilepsy      In combination with Zhusha in Cizhupills, it treats yin deficiency leading to hyperactivity of yang, up-flaming of liver fire, disturbance of mind, qi disorder due to fright and mental derangement manifested as irritability, fright palpitation, insomnia and epilepsy.

2. Liver yang hyperactivity manifested as dizziness and headache     It is combined with Shijueming and Baishao.

3. Yin deficiency of liver and kidney causing tinnitus, deafness, blurred vision     For tinnitus and deafness, it is used with Shudihuang, Shanzhuyu and Wuweizi; for blurred vision, Cizhu Pills can  be used in combination with Medicinals for tonifying liver and kidney. There are clinical reports in recent years that Cizhu Pills can improve eyesight of some patients with cataract.

3. Failure of kidney to receive qi resulting in dyspnea of deficiency type     It is used with Daizheshi, Wuweizi and Hetaoren.

[ Usage and Dosage ]: 9-30g, decoct first; if used in pill orpowder form, 1-3g each time. The raw are used to induce sedation and tranquilization, pacify liver and subdue yang; and the quenched with vinegar are used to improve auditory and visual acuity and improve qi reception to relieve dyspnea.

[ Precautions ]: Since it is not easily digested, it is usually used in pill or powder form avoiding large dosage or prolonged using, and it is used with caution for patients with deficiency of spleen and stomach.

[ Medicinal Comparison ]: Similarties :Both Zhusha and Cishi are heavy and cold, attributive to the heart meridian with the function of relieving palpitation and calming spirit.

Differences:Zhusha can relieve palpitation and clear away heart fire to calm spitrit and mainly treats irritability due to exuberance of heart fire; it also removes heat and toxin to treat carbuncle, sore throat and aphthae. Cishi can tonify kidney yin and subdue liver yang, so it mainly treats kidney deficiency and liver hyperactivity and disturbance of heart by liver fire causing irritability and hyperactivity of liver yang causing diszziness; it can also improve auditory and visual acuity and improve qi reception to relieve dyspnea, so it treats kidney deficiency with tinnitus and deafness, insufficiency of liver and kidney causing blurred vision and kidney deficiency resulting in dyspnea.

磁石为氧化物类矿物尖晶石族磁铁矿的矿石。主产于河北、山东、辽宁、江苏等地。采挖后,除去杂石,选择吸铁能力强者(习称“灵磁石”或“活磁石” )入药。生用或取净磁石,照煅淬法煅至红透,醋淬,碾成粗粉用。

       【药性】咸,寒。归心、肝、肾经。        【功效】镇惊安神,平肝潜阳,聪耳明目,纳气平喘。       
 
【应用】        1.心神不宁,惊悸,失眠,癫痫。本品质重沉降,入心经,能镇惊安神;味咸入肾,又有益肾之功;性寒清热,清泻心肝之火。故能顾护真阴,镇摄浮阳,安定神志。主治肾虚肝旺,肝火上炎,扰动心神或惊恐气乱,神不守舍所致的心神不宁、惊悸、失眠及癫痫,常与朱砂、神曲同用,如磁朱丸(《千金方》)。治小儿惊痫,《圣济总录》以磁石炼水饮之。       
 
 2.头晕目眩。本品入肝、肾经,既能平肝潜阳,又能益肾补阴,故可用治肝阳上亢之头晕目眩、急躁易怒等症,常与石决明、珍珠、牡蛎等平肝潜阳药同用。若阴虚甚者可配伍生地、白芍、龟甲等滋阴潜阳药;若热甚者又可与钩藤、菊花、夏枯草等清热平肝药同用。       
 
 3.耳鸣耳聋,视物昏花。本品入肝、肾经,补益肝肾,有聪耳明目之功。用治肾虚耳鸣、耳聋,多配伍熟地黄、山茱萸、山药等滋肾之品,如耳聋左慈丸(《全国中药成药处方集》)。用治肝肾不足,目暗不明,视物昏花者,多配伍枸杞子、女贞子、菊花等补肝肾、明目之品。近年用磁朱丸治疗白内障,可使视力改善。        4.肾虚气喘。本品入肾经,质重沉降,纳气归肾,有益肾纳气平喘之功。用治肾气不足,摄纳无权之虚喘,常与五味子、胡桃肉、蛤蚧等同用,共奏纳气平喘之功。       
 
【用法用量】煎服,15~30g;宜打碎先煎。入丸、散,每次1~3g。       
 
【使用注意】因吞服后不易消化,如入丸、散,不可多服,脾胃虚弱者慎用。       
 
【鉴别用药】磁石、朱砂均为重镇安神常用药,二药质重性寒入心经,均能镇心安神。
然磁石益肾阴、潜肝阳,主治肾虚肝旺,肝火扰心之心神不宁;朱砂镇心、清心而安神,善治心火亢盛之心神不安。       
 
【古籍摘要】        1.《神农本草经》:“磁石,味辛寒,主周痹风湿,肢节中痛,不可持物,洗洗酸消,除大热烦满及耳聋。”        2.《本草纲目》:“色黑入肾,故治肾家诸病而通耳明目。”        3.《本草从新》:“色黑入水,能引肺金之气入肾,补肾益精,除烦祛热。”       
 
【现代研究】        1.化学成分:本品主要含四氧化三铁(Fe3O4)。其中含氧化亚铁(FeO)31%,三氧化二铁(Fe2O3)69%。尚含钙、镁、钾、钠、铬、锰、镉、铜、锌、砷等微量元素。       
 2.药理作用:磁石具有抑制中枢神经系统,镇惊、抗惊厥作用。炮制后的磁石与异戊巴比妥钠有协同作用,能延长其对小鼠的睡眠时间,对士的宁引起的小鼠惊厥有对抗作用,使惊厥的潜伏期明显延长。       
3.临床研究:据报道,以煅磁石粉60g,朱砂粉60g,神曲180g,炼蜜为80~120丸,治疗精神分裂症、癫痫、癔病等(北京医学,1981,2:102);用磁石5g,商陆5g,麝香0.1g,研末外敷于脐眼、关元穴上,治疗产后尿潴留,数小时内即可见效(浙江中医杂志,1983,11:494);另有用磁石等治疗黄胆性肝炎、高血压、幻听症、疔疮、瘰疬等。       
 
 4.不良反应:本品含毒性成分砷,但含量甚微,古今未见磁石中毒的记载。本品经炮制后砷的含量显著降低。       

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