Unverified85% confidenceDecision RuleTime unknown
维生素D3能显著促进钙的肠道吸收，选含D3的复合钙片可减少额外补D的负担，D3添加量在400-800IU较为常见且适合孕期协同
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85%
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Long-term
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Unverified钙与维生素D3协同可提升肠道钙吸收率，选择含D3(建议400-800IU)的复合钙片比单纯补钙更有效，尤其日晒不足的孕妇94% similarUnverified选择含维生素D3的复合钙片，D3能显著提升钙吸收率，孕期每日D3建议400-800IU；若钙片不含D3需另行单独补充94% similarUnverified选择含维生素D3的钙片，D3促进肠道钙吸收，孕期建议D3含量400-600IU/日；若已单独补充复合维生素含D3，需避免叠加超过4000IU上限94% similarUnverified优先选择含维生素D3的复合钙片，D3促进肠道钙吸收，孕期每日D3推荐量约400-800IU；单纯补钙不补D3时钙吸收利用率明显偏低93% similar
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