Copper
Copper is a moderate-risk supplement with an RDA of 900 mcg and a tolerable upper intake level (UL) of 10000 mcg per day according to NIH/NASEM standards. CNS lists a RDA of 800 mcg and a UL of 8000 mcg. It has 1 known interaction with other supplements including zinc. Use NutriAudit to check if your supplement stack keeps this ingredient within safe limits.
Quick take
Copper sits in the Trace Minerals category. This page consolidates 5 regional standards, and the limits vary enough that you should not treat one region's rule as universal.
It also has 1 known interaction, so the question is not just the label dose but whether the rest of your stack adds extra risk.
Taking multiple supplements? Check Copper for overlap
If Copper appears on two product labels, enter each daily amount and check the combined label total.
Check Copper across my supplementsFree. No account required.
Overdose Risk Warning
Copper excess can cause liver and GI effects; rare with supplements unless very high doses.
Regional Reference Values
| Region | Organization | RDA | Upper Limit (UL) | Unit |
|---|---|---|---|---|
| 🇺🇸 United States | FDA | 900 | 10000 | mcg |
| 🇪🇺 Europe | EFSA | 900 | 10000 | mcg |
| 🇦🇺 Australia | TGA | 900 | 10000 | mcg |
| 🇨🇳 China | 中国营养学会 | 800 | 8000 | mcg |
| 🇯🇵 Japan | MHLW | 900 | 10000 | mcg |
RDA = Recommended Daily Allowance (adequate intake for most adults). UL = Tolerable Upper Intake Level; some authorities have not established one.
Known Interactions
High zinc intake can reduce copper absorption.
Maintain a 10:1 zinc to copper ratio.
How to use this page
First match your product label against the dose table above, then check whether the known interaction list includes anything in your current stack.
If you are taking multiple supplements, the safest approach is usually to audit the whole stack instead of judging a single bottle in isolation.
Frequently Asked Questions
How much Copper is too much?
FDA lists a formal upper limit (UL) of 10000mcg per day for Copper. Other regions may use a different value or have no established UL.
What is the recommended daily dose of Copper?
The RDA for Copper is 900mcg per day for most adults. This amount is sufficient to meet the needs of 97-98% of healthy individuals.
Does Copper interact with other supplements?
Yes, Copper has 1 known interaction with other supplements. High zinc intake can reduce copper absorption.
Are you taking Copper?
Check if your supplement stack keeps Copper within safe limits.
Audit My SupplementsDisclaimer: NutriAudit is a decision-support tool designed to help you review your supplement stack for potential duplicate, conflicting, or excessive ingredients. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making changes to your supplement routine, especially if you are pregnant, nursing, taking medications, or have a medical condition.
Uses cited public reference data where the current dataset has a verified entry.