Copper

Also known as: Cu, cupric, copper sulfate, copper gluconate, copper amino acid complex, sodium copper chlorophyllin, bis-choline tetrathiomolybdate

Evidence under review. — Not yet rated

Essential trace mineral. Research covers medical uses like IUDs and Wilson disease—not general supplementation.

What it does

Copper is an essential trace mineral the body needs in small amounts for enzyme function, energy production, and connective tissue formation. The provided clinical research focuses on specialized...
Evidence quality

Evidence base hasn't been formally rated yet. See research below.
Clinical dose

No established dose from provided studies for general supplementation
Found in

Key Nutrients Electrolyte Recovery Plus Powder, Augustinus Bader The Hair Revitalizing Complex, Hollyhillvitamins and 17 more

See full breakdown ↓ Methodology →

What the Science Says

Copper is an essential trace mineral the body needs in small amounts for enzyme function, energy production, and connective tissue formation. The provided clinical research focuses on specialized medical applications: copper IUDs for contraception (showing 5-year efficacy with a Pearl Index of ~1.0), copper-binding drugs for Wilson disease (a rare genetic copper overload disorder), and topical copper complexes for neuropathic pain and wound healing. Higher serum copper levels in pregnant women were associated with increased cardiovascular risk in one observational study, suggesting that more copper is not always better.

What It Doesn't Do

No evidence from these studies that copper supplements boost energy, improve immunity, or support joint health in healthy adults. Don't assume 'essential mineral' means 'more is better'—excess copper is linked to harm. No data supporting copper supplements for anti-aging, hair growth, or athletic performance. Topical copper products for pain are very early-stage with tiny studies.

Evidence-Based Benefits

Copper IUD provides effective, long-term contraception with a 5-year Pearl Index of about 1.0.

Moderate Evidence

Effective at: Cu 175 mm² IUD (medical device)

Supporting studies (click to view on PubMed):

PMID 41747268

Copper-binding agents significantly reduce copper levels in patients with Wilson disease.

Weak Evidence

Effective at: 15-30 mg/day TMC (prescription only)

Supporting studies (click to view on PubMed):

PMID 42155004

Copper-silver nanoparticle dressings reduced diabetic foot ulcer wound area by 43% in one week.

Weak Evidence

Effective at: Topical dressing applied every other day (medical device)

Supporting studies (click to view on PubMed):

PMID 41926471

Topical copper-amino acid gel modestly reduced chronic neuropathic pain over 3 days in a small pilot trial.

Weak Evidence

Effective at: Applied 4 times daily for 3 days (topical gel)

Supporting studies (click to view on PubMed):

PMID 41970637

Absorption & Bioavailability

Unknown from provided studies for oral supplements. Topical copper complex (RM191A) achieved measurable effects in a small pilot. Copper IUD releases copper locally. Sodium copper chlorophyllin reached serum concentrations >5 µM at 3000 mg oral dose in healthy males.

Red Flags to Watch For

Excess copper is toxic — Wilson disease is caused by copper accumulation, and high serum copper in pregnancy was linked to increased cardiovascular risk in one study
Most clinical research covers medical devices (IUDs) or rare disease treatments, not everyday supplementation — marketing claims for general wellness are not supported by this evidence
Topical copper pain products (RM191A) are based on a single small pilot RCT with only 24 completers — far too early to recommend
Copper nanoparticle wound dressings and metal-organic frameworks are experimental — not available as consumer supplements
High-dose sodium copper chlorophyllin (3000 mg) was only tested in healthy males in a phase I trial — long-term safety is unknown

Supplement

Overhyped

View all product reviews →

Frequently Asked Questions

What does Copper do?

Essential trace mineral. Research covers medical uses like IUDs and Wilson disease—not general supplementation.

What is the effective dose of Copper?

No established dose from provided studies for general supplementation

Is Copper safe?

Excess copper is toxic — Wilson disease is caused by copper accumulation, and high serum copper in pregnancy was linked to increased cardiovascular risk in one study

What doesn't Copper do?

No evidence from these studies that copper supplements boost energy, improve immunity, or support joint health in healthy adults.

Research Sources

PubMed
NIH DSLD

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25