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维C吃多了会怎样
更新时间: 2020-10-09 00:00:00  

维生素C又称抗坏血酸,具有很强的还原性,很容易被氧化成脱氢维生素C,但其反应是可逆的,并且抗坏血酸和脱氢抗坏血酸具有同样的功能,但脱氢抗坏血酸若继续氧化,生成二酮古乐糖酸,则反应不可逆而完全失去效能。维生素C摄入过多会产生以下副作用:

1、维生素C为酸性物质,大量服用后可引起尿液的PH值降低,尿中草酸盐、尿酸盐明显增加,容易形成肾结石;

2、维生素C可以促进肠蠕动,大剂量服用会引起腹泻、胃酸过多、胃液返流等;

3、静脉注射大剂量维生素C可引起静脉血栓形成,使血管内溶血或凝血,重者可危及生命,注射时还可引起过敏、注射局部疼痛或组织坏死等现象。

关键词: 怎样

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