Unverified90% confidenceDecision RuleTime unknown
二价铁（硫酸亚铁/富马酸亚铁）吸收率高但对肠胃刺激大，甘氨酸螯合铁（Ferrous Bisglycinate）在同等元素铁剂量下便秘、恶心发生率显著更低，肠胃敏感者优先选螯合铁
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Unverified硫酸亚铁(二价铁)吸收率高但胃肠刺激大，甘氨酸亚铁螯合铁(bisglycinate)吸收率相当而便秘、恶心发生率显著降低，肠胃敏感者应优先选螯合铁97% similarUnverified甘氨酸亚铁（螯合铁）的胃肠道刺激显著低于硫酸亚铁，缺铁但胃肠敏感者应选螯合铁形式（如bisglycinate），即使元素铁含量偏低也更利于长期依从93% similarUnverified甘氨酸亚铁（螯合铁）的吸收率比硫酸亚铁高约2-4倍，且肠胃刺激显著更小，胃肠敏感或补铁后易便秘/恶心的人应优先选择螯合铁形式93% similarUnverified铁形式影响吸收和肠胃反应：甘氨酸亚铁（螯合铁）比硫酸亚铁便秘/反胃副作用更小，孕吐或肠胃敏感者优选螯合铁型93% similarUnverified二价铁吸收好但对胃刺激大、易致便秘和黑便；甘氨酸亚铁螯合铁形式肠胃刺激最小，胃肠敏感者应优先选螯合铁而非普通硫酸亚铁93% similar
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