维生素D3吃多少毫升 维生素D3,用法用量是什么
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维生素D3是胆钙化醇。在动物皮下的7-脱氢胆固醇，经紫外线照射也可以转化为维生素D3。
长期每天摄入0.025毫克维生素D3对人体有害。可能造成的后果是：恶心、头痛、肾结石、肌肉萎缩、关节炎、动脉硬化、高血压、轻微中毒、腹泻、口渴、体重减轻、多尿及夜尿等症状。严重中毒时则会损伤肾脏，使软组织（如心、血管、支气管、胃、肾小管等）钙化。只有休息少的人，才需要额吃些含维生素D3的食品或制剂。
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