Supplement Scholar
Mineral

Copper

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Copper. Trace mineral cofactor for ceruloplasmin and connective tissue crosslinking.

How it works. Cofactor for cytochrome c oxidase, lysyl oxidase, dopamine β-hydroxylase, Cu/Zn-SOD.

What the research supports. 1 graded claims. Strongest: Prevents deficiency anemia & neuropathy (strong).

How much to take. Typical dose: 0.9–2 mg.

Side effects and interactions. 1 medication interaction listed. Serious: Wilson's disease accumulation.

Stacking. Pairs well with Collagen peptides, Vitamin C.

Common forms. Available as Copper bisglycinate, Sulfate.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Copper. Anecdotes are not medical advice.

Copper. Trace mineral cofactor for ceruloplasmin and connective tissue crosslinking.

Element Cu · Z = 29Cu · 63.55 g/mol

What it is

Trace mineral cofactor for ceruloplasmin and connective tissue crosslinking.

Food sources

LiverOystersCashewsCocoa

Goals

Skin, Hair & NailsGeneral Wellness

How it works

Cofactor for cytochrome c oxidase, lysyl oxidase, dopamine β-hydroxylase, Cu/Zn-SOD.

Pathways

  • Oxidative phosphorylation
  • Collagen crosslinking

Effects

  • +Iron mobilization (ceruloplasmin) supports

What the research supports

Prevents deficiency anemia & neuropathystrong

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
0.9–2 mg
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodEither with or without food.
Best formMost evidence is based on the copper bisglycinate form.
Upper limit10 mg
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Side effects & interactions

Common side effects

  • Nausea

Serious

  • Wilson's disease accumulation

Medication interactions

Zinc (long-term high)moderate

Induces copper deficiency.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • Collagen peptidesProvides amino acid substrate for connective tissue synthesis.
  • Vitamin CRequired cofactor for collagen hydroxylation.

Common forms

  • Copper bisglycinate
  • Sulfate

Key studies

8 studies cited in total.

PubMed: Copper — Prevents deficiency anemia & neuropathy ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Copper and "Prevents deficiency anemia & neuropathy". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Copper — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Copper and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Copper — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Copper and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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