Unverified88% confidenceDecision RuleTime unknown
铁剂选甘氨酸亚铁(双甘氨酸螯合铁)或多糖铁复合物比硫酸亚铁便秘和胃刺激明显更轻，孕中晚期(孕13周后)需铁量增至每日27mg，孕早期无缺铁则不必强补
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Unverified孕期铁剂优先选低刺激的多糖铁复合物或甘氨酸亚铁，因孕期本就易便秘，硫酸亚铁会加重；孕中晚期每日需元素铁约30mg，需选择标注孕妇适用的医药级或经认证的营养补充剂94% similarUnverified孕妇选铁剂优先选螯合铁或多糖铁复合物（羰基铁类），元素铁约30mg/天且刺激小、便秘轻，避免硫酸亚铁引发的孕期便秘加重；需与产检铁蛋白结果配合93% similarUnverified孕期补铁建议选甘氨酸亚铁或多糖铁等温和剂型，妊娠期便秘常见，硫酸亚铁易加重便秘；孕中晚期需求增至每日27mg元素铁，应在医生指导下补充93% similarUnverified孕中晚期营养包铁含量应达到每日27mg左右，且优先选择甘氨酸亚铁或富马酸亚铁等有机铁形态，比无机铁（硫酸亚铁）吸收率高且胃肠刺激小、不易便秘93% similarUnverified孕期铁需求量随孕周上升，孕中晚期每日约需27mg元素铁；甘氨酸亚铁/富马酸亚铁等有机铁比硫酸亚铁胃肠刺激小、吸收率更高，搭配维生素C可提升吸收91% similar
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