Unverified90% confidenceDecision RuleTime unknown
维生素D3是钙吸收的必需辅助因子，无D3协同时钙吸收率仅10-15%；选择每片含D3≥400IU的复合配方比单纯钙片更有效
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Unverified维生素D3是钙吸收的必需协同因子，选择含D3的复方钙片（每片400-800IU）比单纯钙片吸收利用率显著更高，尤其日照不足人群94% similarUnverified含维生素D3的钙片优于纯钙片，D3促进钙吸收，选择每片含维生素D3 200-400IU的产品更利于钙利用94% similarUnverified选购钙剂优先看是否含维生素D3（而非D2），D3每片含量400-800IU可显著提升钙吸收率约30-40%；缺D3的纯钙剂吸收效率大打折扣94% similarUnverified选择含维生素D3的复合钙剂优先，D3每100-400IU可显著提升钙吸收率，单纯补钙不含D3时钙吸收利用率大幅下降93% similarUnverified钙吸收需维生素D3协同，选择含D3的复合液态钙（成人每日400-800IU）优于纯钙，若产品未含D3则需额外补充，否则钙吸收率大幅下降93% similar
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