Can You Take Iron and Zinc Together?
High doses of iron can reduce how much zinc your body absorbs.
See the full Iron page and Zinc page for other reviewed interactions and reference information.
What the interaction means
The NIH Office of Dietary Supplements' iron fact sheet states, in its "Can iron be harmful?" section: "High doses of iron can also decrease zinc absorption."
Why it may happen
Not further specified by the source beyond the absorption-competition effect described above.
Practical context
This is scoped to high doses of iron specifically, not typical supplement-label amounts, and no spacing interval is published in this source.
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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