[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

成人日常维持推荐1000-2000IU/天;血清25(OH)D<20ng/ml的明确缺乏者可短期用5000IU纠正,但5000IU不建议无检测长期服用,成人长期安全上限约4000IU/天

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85%
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Long-term
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