Can You Take Iron and Potassium Together?
No documented interaction was identified between iron and potassium in the sources reviewed.
What the interaction means
Neither the NIH Office of Dietary Supplements' iron fact sheet nor its potassium fact sheet names the other mineral anywhere in its interactions section.
No documented interaction 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, full text, in both directions.
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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- Iron and CaffeineInsufficient evidence
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- Iron and LevothyroxineUse caution
- Iron and MagnesiumInsufficient evidence
- Iron and DoxycyclineUse caution
- Iron and CiprofloxacinUse caution
- Iron and Vitamin B12Insufficient evidence
- Iron and Vitamin DInsufficient evidence
- Iron and St. John's WortInsufficient evidence
- Iron and ProbioticsInsufficient evidence
- Iron and CopperInsufficient evidence
- Iron and TurmericInsufficient evidence
- Iron and MetforminInsufficient evidence
- Iron and CoQ10 (Coenzyme Q10)Insufficient evidence
- Iron and Vitamin KInsufficient evidence
- Iron and CreatineInsufficient evidence
- Iron and AtorvastatinInsufficient evidence
- Iron and MelatoninInsufficient evidence
- Iron and LisinoprilInsufficient evidence
- Iron and SertralineInsufficient evidence
- Potassium and CalciumInsufficient evidence
- Potassium and MagnesiumInsufficient evidence
- Potassium and WarfarinInsufficient evidence
- Potassium and SpironolactoneAvoid combining
- Potassium and LisinoprilMonitor
- Potassium and TurmericInsufficient evidence
- Potassium and CiprofloxacinInsufficient evidence
- Potassium and CopperInsufficient evidence
- Potassium and CoQ10 (Coenzyme Q10)Insufficient evidence
- Potassium and St. John's WortInsufficient evidence
- Potassium and ZincInsufficient evidence
- Potassium and DoxycyclineInsufficient evidence
- Potassium and ProbioticsInsufficient evidence
- Potassium and MelatoninInsufficient evidence
- Potassium and MetforminInsufficient evidence
- Potassium and AtorvastatinInsufficient evidence
- Potassium and CreatineInsufficient evidence
- Potassium and CaffeineInsufficient evidence
- Potassium and Vitamin DInsufficient evidence
- Potassium and Vitamin KInsufficient evidence
- Potassium and LevothyroxineInsufficient evidence
- Potassium and SertralineInsufficient evidence
- Potassium and Vitamin B12Insufficient evidence
- Potassium and OmeprazoleMonitor