Can You Take Iron and Magnesium Together?
No documented interaction was identified between iron and magnesium in the sources reviewed.
See the full Iron page and Magnesium page for other reviewed interactions and reference information.
What the interaction means
The NIH Office of Dietary Supplements' iron fact sheet names levodopa, levothyroxine, proton pump inhibitors, and calcium in its interactions section -- magnesium is not named. The magnesium fact sheet does not name iron.
No documented interaction between Iron and Magnesium was identified in the authoritative sources reviewed. This is not a guarantee that no interaction exists for every dose, formulation, or individual -- it means the sources checked did not document one.
Practical context
Both substances' own current NIH fact sheets were checked directly and neither names the other.
What the sources say
Last reviewed 2026-08-23
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.
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- Magnesium and CreatineInsufficient evidence
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- Magnesium and LevothyroxineMonitor
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- Magnesium and Omega-3 / Fish OilInsufficient evidence
- Magnesium and Vitamin EInsufficient evidence
- Magnesium and Folate / Folic AcidInsufficient evidence
- Magnesium and LosartanInsufficient evidence
- Magnesium and AspirinInsufficient evidence
- Magnesium and AmlodipineInformational
- Magnesium and EscitalopramInsufficient evidence
- Magnesium and IbuprofenInsufficient evidence