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Copper Side Effects & Safety

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Safe with Caution

Potential Side Effects

  • Nausea and stomach pain (most common, especially on empty stomach)
  • Vomiting at high doses
  • Liver toxicity with chronic excessive intake (Wilson disease patients are especially vulnerable)
  • Metallic taste

Drug & Supplement Interactions

  • Zinc supplements compete with copper for absorption via metallothionein — primary clinical concern
  • High-dose vitamin C (>1,500mg) may reduce copper absorption
  • Penicillamine (used for Wilson disease) chelates copper
  • Antacids may reduce copper absorption

Maximum Dose

Do not exceed: 10mg/day (NIH UL); liver toxicity possible above this

Full Copper Guide

References

  1. (). Zinc-induced copper deficiency: a report of three cases initially recognized on bone marrow examination. American Journal of Clinical Pathology. DOI
  2. (). Long-term high copper intake: effects on indexes of copper status, antioxidant status, and immune function in young men. American Journal of Clinical Nutrition. DOI
  3. (). Dietary copper and human health: Current evidence and unresolved issues. Journal of Trace Elements in Medicine and Biology. DOI