Research statusCatalogued record, not clinically approved.
Citation presence and an automated evidence check are not medical review.
This pair has not completed NutriStack's standalone publication gate. Attached sources may mention one or both substances without establishing the stored interaction type, direction, severity, dose, management advice, or combined safety. The page is excluded from search indexing and must not be used to start, stop, or change treatment.
From the databaseWhat the row says.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
Scope
Supplement × Supplement
Last updated
July 13, 2026
CautionStrong evidence
What is happening. Chronic high-dose zinc supplementation (>40mg/day) can induce copper deficiency by upregulating metallothionein, which binds copper in enterocytes.
Mechanism. Zinc induces metallothionein in intestinal cells, which preferentially binds copper, trapping it in enterocytes that are later shed, causing copper loss.
Why it matters. If supplementing zinc >25mg daily, add 1-2mg copper.
Recommendation. If supplementing zinc >25mg daily, add 1-2mg copper. Many zinc supplements include copper for this reason. Monitor copper status.
Direction. Zinc changes how Copper behaves.
Stack Score
How it moves the number.
Effect on the composite score
No numeric score interpretation is published for this unreviewed pair record.
Stack Score is a NutriStack product heuristic, not a clinical risk or benefit grade. An unreviewed database label must not be treated as a safety or benefit signal. The algorithm is documented at /methodology/stack-score.
SourcesSources, by evidence tier.
Sources attached to the record. Some support an ingredient or mechanism rather than a study of the exact pair; PMIDs link to PubMed where available.
FAQCommon Copper + Zinc questions.
Plain-language answers drawn from the interaction record on this page.
Can I take Copper and Zinc together?
NutriStack flags a potential caution involving Copper and Zinc. Review the evidence and confirm medication decisions with a clinician or pharmacist. Chronic high-dose zinc supplementation (>40mg/day) can induce copper deficiency by upregulating metallothionein, which binds copper in enterocytes.
What kind of interaction is it?
Caution: the stored record flags a possible efficacy or side-effect concern that may warrant monitoring.
How does this affect a NutriStack Stack Score?
No numeric score interpretation is published for this pair because its stored label has not completed source-level clinical review.
What do the cited sources establish?
NutriStack lists 3 source records with this Copper + Zinc entry. A source may support an ingredient, mechanism, or safety concern without testing the exact pair, so citation presence alone does not prove the visible verdict. Full sourcing methodology is at https://nutristackapp.com/methodology/interactions.
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