Unverified50% confidenceDecision RuleTime unknown
氧化镁（Magnesium Oxide）标称含量高（约60%元素镁）但生物利用度低于4%，主要用于缓解便秘而非补镁；真正补镁应选甘氨酸镁、柠檬酸镁或苏糖酸镁
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