Unverified85% confidenceDecision RuleTime unknown
日常维持推荐1000-2000IU/天，血清检测明确缺乏（<20ng/mL）可短期用5000IU纠正后回落到2000IU维持，长期无监测下每日≥4000IU有累积超量风险
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85%
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Long-term
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Unverified普通成人日常维持选1000-2000IU/天即可，缺乏纠正期（血清25-OH-D＜20ng/ml）可短期用5000IU/天，达标后回落到维持量；长期无监测下超过4000IU/天有蓄积风险92% similarUnverified无缺乏症的成人日常维持选1000-2000IU/天即可，血清检测<20ng/ml的缺乏者可短期用5000IU纠正，达标后回落到维持量91% similarUnverified日常维持型补充选1000-2000IU/天即可；仅在检测出明显缺乏（血清25(OH)D<20ng/ml）且遵医嘱时才短期使用5000IU大剂量90% similarUnverified血清25-OH-D＜20ng/ml（缺乏）时常需2000-5000IU/日纠正数月，充足维持一般1000-2000IU/日即可；无检测数据时成人日常维持选1000-2000IU较稳妥，不建议长期盲目5000IU90% similarUnverified血清25-OH-D正常者日常维持选400-1000IU；检测显示缺乏（＜20ng/mL）需在医生指导下短期用2000-5000IU纠正，达标后降回维持量，不建议长期自行服用5000IU89% similar
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