Unverified90% confidenceDecision RuleTime unknown
钙镁配方应遵循钙:镁≈2:1的比例,且单次钙摄入≤500mg(超过则吸收率显著下降),故日需1000mg钙应分两次服用
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Unverified钙镁比例宜为2:1至1:1,钙镁同补时单片元素钙≤500mg,因单次吸收超过500mg元素钙后吸收率显著下降,需分次服用94% similarUnverified钙镁复合补剂中钙镁比例接近2:1时吸收较均衡;单独大剂量补钙(>500mg/次)会竞争性抑制镁、锌、铁吸收,建议单次钙摄入分次≤500mg94% similarUnverified钙镁配比应接近2:1(如钙500mg配镁250mg),镁不足会影响钙沉积并导致便秘;单片钙含量超过500mg吸收率反而下降,需分次服用93% similarUnverified钙的单次吸收上限约500mg元素钙,每日需求超过500mg应分2-3次服用,一次性大剂量补钙吸收率显著下降92% similarUnverified单次钙吸收上限约500mg元素钙,每日总需求(如1000-1200mg)应分2-3次服用,一次性大剂量补钙吸收率显著下降91% similar
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