Copper (Cu)
Cofactor for iron metabolism, connective tissue synthesis, and superoxide dismutase — must be balanced with zinc intake.
Copper is an essential trace mineral involved in numerous enzymatic reactions. It's critical for iron metabolism (ceruloplasmin), energy production (cytochrome c oxidase), connective tissue synthesis (lysyl oxidase), and antioxidant defense (superoxide dismutase). Copper must be balanced with zinc, as high zinc intake can deplete copper. Most people get adequate copper from diet, but supplementation may be needed when taking high-dose zinc.
Essential for iron transport and utilization
Component of superoxide dismutase
Required for collagen cross-linking
How Copper works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
1-2mg daily (typically to balance zinc)
Loading: Not required; maintain consistent intake
Take with food
| Form | Type |
|---|---|
| 💊Copper Bisglycinate (gentle, well-absorbed) | Recommended |
| 💊Copper Gluconate | Alternative |
| 💊Copper Citrate | Alternative |
| 💊Cupric Oxide (poorly absorbed) | Alternative |
Chelated forms like bisglycinate are gentler. Avoid copper oxide due to poor absorption.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: Not required
Note: Often taken at a 15:1 ratio with zinc (e.g., 30mg zinc with 2mg copper). Don't exceed needs.
Prevents zinc-induced copper deficiency
Supports mitochondrial energy production
Excess copper can be harmful
Add 1-2mg copper to prevent deficiency
High zinc depletes copper; balance needed
Chelates copper; used for Wilson's disease
Tip: Take with food; use chelated forms
Tip: Don't exceed recommended doses; avoid if Wilson's disease
Top studies from 40+ peer-reviewed papers
Zapata LB et al. • The Cochrane database of systematic reviews (2025)
“Evidence from RCTs of women seeking routine IUD placement suggests that receiving misoprostol compared to placebo or no treatment makes little to no difference to pain during tenaculum placement or after IUD placement; and may make little to no difference to pain during IUD placement.”
Turner S et al. • The Cochrane database of systematic reviews (2021)
“Most interventions were assessed by single, small studies.”
Shen J et al. • The Cochrane database of systematic reviews (2019)
“Levonorgestrel and mid-dose mifepristone (25 mg to 50 mg) were more effective than Yuzpe regimen.”
Ryan A et al. • The Cochrane database of systematic reviews (2019)
“The cut-offs used for caeruloplasmin, 24-hour urinary copper and hepatic copper for diagnosing Wilson's disease are method-dependent and require validation in the population in which such index tests are going to be used.”
Lopez LM et al. • The Cochrane database of systematic reviews (2015)
“Nearly all trials used modern IUC.”
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Zinc
9/10Involved in 300+ enzymatic reactions — supports immune defense, testosterone production, wound healing, and sleep quality.
Iodine
9/10Essential trace mineral for thyroid hormone production — deficiency is common and affects metabolism, energy, and cognition.
Iron
9/10Essential mineral for oxygen transport and energy production — critical for those with deficiency, especially women and athletes.
Selenium
9/10Required for selenoprotein production that regulates thyroid hormones, powers glutathione peroxidase, and strengthens immune defense.
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