Unverified88% confidenceDecision RuleTime unknown
补铁选二价铁（亚铁）而非三价铁：甘氨酸亚铁螯合物（如Ferrochel）胃肠刺激最小、吸收率高；硫酸亚铁最便宜但便秘/恶心副作用重。同服维C（≥100mg）可提升非血红素铁吸收2-3倍
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Unverified补铁选二价铁（亚铁：硫酸亚铁/富马酸亚铁/甘氨酸亚铁）而非三价铁，二价铁吸收率显著更高；甘氨酸亚铁（bisglycinate）胃肠刺激最小、便秘发生率低，适合不耐受传统铁剂人群94% similarUnverified补铁优先选二价铁（亚铁/glycinate甘氨酸亚铁）而非三价铁，二价铁吸收率显著更高；甘氨酸亚铁螯合形式胃肠刺激小，适合难以耐受硫酸亚铁便秘/恶心的人群93% similarUnverified铁剂优选二价亚铁（如乳酸亚铁、富马酸亚铁、甘氨酸亚铁），三价铁需还原为二价才能吸收，吸收率低；甘氨酸亚铁螯合形式对肠胃刺激最小93% similarUnverified甘氨酸亚铁螯合铁（如Ferrochel/双甘氨酸螯合铁）胃肠刺激最小，吸收率是硫酸亚铁的2-4倍，适合有胃病或既往铁剂不耐受人群93% similarUnverified补铁产品优先选择二价亚铁（如甘氨酸亚铁、富马酸亚铁、乳酸亚铁），其吸收率显著高于三价铁；其中甘氨酸亚铁（螯合铁）吸收率最高且对肠胃刺激最小，几乎不引起便秘和黑便92% similar
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