Unverified90% confidenceDecision RuleTime unknown
维生素A剂量需卡阈值:1-3岁每日安全上限为600μg RAE(视黄醇当量),选购时VA+β-胡萝卜素累计不应超此值,脂溶性维生素(A/D/E/K)过量会蓄积中毒
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Unverified预成型维生素A(视黄醇/棕榈酸视黄酯)成人每日安全上限为3000μg RAE(10000IU),长期超过此量有肝毒性和骨密度下降风险;日常补充剂选每粒≤1500μg(5000IU)更安全86% similarUnverified维生素A每日安全上限:成人3000μg RAE(约10000 IU),孕妇需严格控制在3000μg以下。长期超过此量可能导致肝损伤和骨密度下降,选购时单粒剂量建议不超过800-1000μg RAE(2500-3000 IU)85% similarUnverified成人维生素A每日安全摄入上限为3000微克RAE(视黄醇当量),选购时单份饮品维A含量应控制在800微克RAE以内,避免叠加日常膳食后超标82% similarUnverified成人每日维生素A可耐受最高摄入量(UL)为3000μg RAE(约10000IU视黄醇当量),长期日补超过此值有肝毒性和骨质疏松风险;日常补充剂单粒选择2500-5000IU视黄醇更安全81% similarUnverified成人维生素A补充剂每日剂量应控制在3000μg RAE(10000IU)以下,超过此上限长期服用可能导致肝毒性和骨密度下降80% similar
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