Why do Calcium and Iron interact?

Calcium blocks iron absorption by up to 50% This is a absorption interaction rated high severity.

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Calcium + Iron

Q: Can I take Calcium with Iron?

Not without care. Calcium blocks iron absorption by up to 50% Take at least 2 hours apart

Can you take Calcium and Iron together? Here's what the science shows.

Significant InteractionIngredientMD curated

Calcium and Iron have a significant interaction. Calcium blocks iron absorption by up to 50%

Bottom line: Take at least 2 hours apart

How They Interact

Calcium blocks iron absorption by up to 50%

Timing

Take at least 2 hours apart

Our Recommendation

Take at least 2 hours apart

This is a clinically significant interaction. Consult your healthcare provider before combining these.

Evidence Sources

IngredientMD curated interaction database

Based on 0 clinical references from peer-reviewed literature.

Common Questions

Calcium and Iron have some interaction to consider. Calcium blocks iron absorption by up to 50% Take at least 2 hours apart

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Related Interactions

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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. Always consult with a healthcare provider before making changes to your supplement regimen, especially if you take medications.