Unverified85% confidenceTradeoffTime unknown

剂量越高越省事但过量风险越大：长期>4000IU/天可能导致高钙血症、肾结石。无检测报告时不宜盲目常年服用5000IU，日常维持1000-2000IU安全窗口更宽

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维生素D补充剂category

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Unverified剂量越高见效越快但过量风险越大：长期超4000IU/日可能致高钙血症，选高剂量（5000IU）时应有检测支持而非默认长期服用91% similar Unverified剂量越高（如10000 IU）越不适合长期无监测服用，会累积致高钙血症；纯维持用户选1000-2000 IU分次或每日更安全，别盲目追高剂量89% similar Unverified剂量越高纠正缺乏越快，但过量风险也上升：长期＞4000IU/天且不监测血清水平可能导致高钙血症，高剂量应作为短期纠正手段而非终身习惯87% similar

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