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芒硝的药理作用与现代研究

ว 2026-09-10 00:18:32ที่ 中药材天地网(zyctd.com)《*辞典》เ admin

芒硝主含含水硫酸钠,此外常夹杂食盐、硫酸钙、硫酸镁等。药理作用:一、泻下作用,玄明粉系纯粹的硫酸钠,内服后其硫酸离子不易被肠黏膜吸收,存留肠内成为高渗溶液,使肠内水分增加引起机械刺激促进肠蠕动,盐类对肠黏膜也有化学刺激作用但并不损害肠黏膜。过浓溶液到达十二指肠时可引起幽门痉挛,服时应饮大量水稀释,服后4至6小时发生下泻作用排出流体粪便。二、抗炎消肿作用,实验性阑尾炎家兔腹部外敷大黄、芒硝、大蒜加食醋糊剂,对阑尾及脾脏网状内皮系统有明显刺激作用,使其增生与吞噬能力增强,阑尾炎症较对照组明显减轻。三、感染性创伤用10%至25%硫酸钠溶液外敷可加块淋巴生成,有消肿和止痛作用;4.3%硫酸钠无菌溶液静脉滴入可作为利尿剂治疗无尿症和尿毒症。

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