Common side effects of iron supplements, according to clinical research, include:
- Constipation or diarrhea
- Stomach pain and nausea
- Black stools
- Temporary tooth staining
To minimize side effects, start with a lower dose and gradually increase it. Taking supplements with food can help reduce stomach issues, though this may decrease absorption. If side effects persist, consult your healthcare provider about switching to a different form of iron or adjusting the dosage.
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Last Updated: August 28, 2025
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