Do Iron Supplements Cause Heartburn? How to Stop It
Yes, commonly — and more than most people are warned about. In a meta-analysis of 43 trials covering 6,831 adults, ferrous sulfate more than doubled the odds of gastrointestinal side effects compared with placebo (OR 2.32) and roughly tripled them compared with intravenous iron (OR 3.05). The mechanism isn’t …
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