Unverified82% confidenceTradeoffTime unknown
剂量越高（5000IU）单粒起效快但过量风险和累积毒性风险上升；日常安全性优先选1000-2000IU，需要快速纠正才用高剂量并配合检测
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82%
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Unverified剂量与安全的权衡：5000IU纠正缺乏见效快但需监测，1000-2000IU起效慢但可无监测长期服用，无检测者优选低剂量82% similarUnverified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80% similarUnverified剂量越高见效快但过量风险大vs剂量常规更安全——除医生诊断缺乏外，普通预防补充坚持400IU即可，切勿自行加量80% similarUnverified该产品每滴/每次剂量为500IU，属于常规预防剂量，若医生建议更高治疗剂量（如1000IU/天）需要加量服用，不如选择单次高剂量产品方便78% similarUnverified剂量越高单价越省但灵活性越差：5000IU单粒适合缺乏纠正阶段，维持期难拆分；1000IU可每日灵活调整。日常长期补充选1000-2000IU更安全可控78% similar
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