Unverified85% confidenceDecision RuleTime unknown
钙补充要看是否同时添加维生素D3和维生素K2，仅有钙而无D3的产品吸收率大打折扣，老人建议选每份钙≥300mg且含D3≥5μg的配方
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Related Claims
Unverified钙强化产品需选择添加维生素D3的款式（≥0.75μg/100ml），维生素D促进钙吸收，缺乏时补钙效果大打折扣；部分产品仅强化钙而无维D，实际吸收率低91% similarUnverified选购时看维生素D3含量而非仅看钙含量：D3每日400-800IU可提升钙吸收30-40%，无D3的纯钙产品实际利用率偏低91% 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90% 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90% similar
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