# Copper Bisglycinate

> Copper bisglycinate is copper in a highly bioavailable chelated form. It is the essential cofactor for lysyl oxidase (LOX), the enzyme that creates the covalent crosslinks giving collagen its tensile strength in hEDS. Without enough copper, new collagen builds poorly; with it, ZebraThrive's other ECM ingredients can do their job. ZebraThrive uses 2 mg elemental daily in the AM stack.

**Page:** https://www.wellnessforzebras.com/ingredients/copper-bisglycinate
**Brand:** ZebraThrive
**Author:** Ken Chapman, Founder of ZebraThrive
**Last reviewed:** 2026-05-11
**Daily dose:** 2mg elemental copper daily (AM capsules only)
**Form used:** Copper Bisglycinate
**Target population:** Adults 18+ with hypermobile Ehlers-Danlos Syndrome (hEDS), Postural Orthostatic Tachycardia Syndrome (POTS), or Mast Cell Activation Syndrome (MCAS).
**Regulatory framing:** US DSHEA dietary supplement. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

## Key benefits

- 62% increase in collagen cross-link ratio in human RCT
- Stabilizes mast cells and inhibits histamine release
- Critical cofactor for DAO (histamine degradation enzyme)
- Essential for norepinephrine synthesis and orthostatic tolerance

## What it is

An essential trace mineral in a highly bioavailable chelated form that serves as the critical cofactor for the enzyme that cross-links collagen fibers

## Why we include it

Required for lysyl oxidase (LOX), the enzyme responsible for creating the covalent bonds that give collagen its tensile strength

## Plain-language summary

Copper is an essential trace mineral and the single non-negotiable cofactor for lysyl oxidase (LOX) - the enzyme that creates cross-links between collagen and elastin fibers. Cross-links are what give connective tissue its tensile strength. Without adequate copper, LOX can't function properly, and the collagen your body makes won't cross-link the way it needs to. For hEDS specifically, copper is foundational. A 2010 RCT in young women (DiSilvestro) showed that 2 mg/day copper for 8 weeks increased the urinary collagen crosslink ratio by 62%. We dose exactly that: 2 mg of elemental copper as copper bisglycinate.

## Mechanism

Copper is the primary power source for Lysyl Oxidase (LOX), which weaves together collagen threads into strong tissue. It also stabilizers mast cells (copper deficiency increases mast cell population by 53%) and serves as a cofactor for Diamine Oxidase (DAO), which breaks down histamine. For POTS, it is essential for the conversion of dopamine to norepinephrine, crucial for vascular tone.

## Condition-specific notes

### MCAS (Mast Cell Activation Syndrome)

Stabilizes mast cells and supports DAO. The bisglycinate form avoids GI irritation. Deficiency is linked to increased mast cell reactivity.

### hEDS (hypermobile Ehlers-Danlos Syndrome)

The single most evidence-supported intervention for collagen cross-linking optimization (62% improvement at 2mg).

### POTS (Postural Orthostatic Tachycardia Syndrome)

Essential for norepinephrine synthesis (dopamine β-hydroxylase), which is required to maintain vascular tone and blood pressure.

## Why this form

**Selected form:** Copper Bisglycinate

Uses amino acid transporters (PEPT1) rather than mineral transporters, achieving 40-50% bioavailability vs 10% for sulfate forms. Gentler on the stomach.

**Form comparison:**

| Form | Notes | Selected |
|---|---|---|
| Copper Bisglycinate | 40-50% bioavailability; PEPT1 transport; superior GI tolerance | Yes |
| Copper Sulfate | 10-15% bioavailability; common GI irritation | No |

## Dose protocol

| Step | Dosage | Notes |
|---|---|---|
| Weeks 1-2 | 0.5-1 mg daily | Assess tolerance |
| Week 3+ | 2 mg daily | Target maintenance (AM) |

**Timeline to effect:** Collagen cross-linking benefits require 8 weeks minimum.

## Evidence summary

### Collagen Cross-Linking

Human RCT evidence demonstrating dramatic improvement in collagen quality markers.

- [1] **DiSilvestro et al., 2010.** Finding: 2mg/day produced a 62% increase in the ratio of collagen cross-links to total collagen.. PMID: 20569928.

### Mast Cell Stabilization

Research shows copper inhibits rather than activates mast cells.

- [3] **Sharma & Jande, 1989.** Finding: Dose-dependent inhibition of mast cell histamine release.. PMID: 2476088.
- [4] **Schuschke et al., 1994.** Finding: Copper deficiency increases mast cell population by 53%.. PMID: 7528379.

## Evidence gaps

No direct clinical trials in EDS/POTS cohorts; the 2025 KLK15 discovery suggests LOX mislocalization may be a factor in EDS regardless of copper levels.

## Safety

**Side effects:** Well-tolerated at 2mg. dose is 5x below upper tolerable limit. no documented tachycardia risk.

**Interactions:** MUST be separated from Zinc by 12+ hours to prevent competition. Contraindicated with penicillamine.

**Cautions:** Separate from high-dose Vitamin C (Fenton reaction concern). Wilson's disease is absolute contraindication.

**Excipients to avoid:** Copper Citrate (MCAS trigger), Corn-derived fillers

**Excipients that are safe:** Rice flour, HPMC capsules

## Frequently asked questions

### Why copper bisglycinate vs other copper forms?

Bisglycinate is copper chelated to two glycine molecules - the amino acid carrier ferries the copper through amino acid transporters rather than competing for the limited mineral transporters used by zinc, iron, and calcium. The result is better absorption, less GI irritation, and less competition with other minerals in the same supplement. The chelation approach has decades of well-studied use across magnesium, copper, manganese, and zinc supplements. We use copper bisglycinate with full Certificate of Analysis verification on every lot.

### Will copper interfere with zinc?

At our doses, no - but the design matters. Copper and zinc compete for the same intestinal transporters, so high-dose zinc taken simultaneously can reduce copper absorption (and vice versa). Our formulation places copper in the AM capsule and zinc carnosine in both AM and PM, with the heaviest zinc dosing separated from copper by enough time to minimize competition. The 2 mg copper to ~17 mg total elemental zinc daily ratio is within the well-studied safe range.

### Is 2 mg of copper safe long-term?

Yes. The 2 mg dose is the exact amount tested in the DiSilvestro 2010 RCT for 8 weeks with no safety concerns. The Tolerable Upper Intake Level for adults is 10 mg/day, so 2 mg sits comfortably at one-fifth of the UL. One screening consideration: if you have a family history of Wilson disease (a genetic copper-handling disorder, about 1 in 40-90 carrier frequency), mention it to your prescriber and consider a baseline serum copper test before chronic supplementation.

### Why does copper matter for connective tissue?

Copper is the essential cofactor for lysyl oxidase (LOX), the enzyme that creates the cross-links giving collagen and elastin their tensile strength. Without adequate copper, those cross-links can't form properly. The genetic copper-deficiency disorders (Menkes disease, occipital horn syndrome) produce a phenotype that overlaps with EDS, which is the strongest case that copper adequacy is foundational for proper collagen architecture in hEDS too.

## References

[1] DiSilvestro et al.. (2010). Copper supplementation effects on cardiovascular health. PMID: 20569928. https://pubmed.ncbi.nlm.nih.gov/20569928/
[2] Olivares et al.. (2013). Copper in the assessment of nutrient status. PMID: 23651769. https://pubmed.ncbi.nlm.nih.gov/23651769/
[3] Sharma & Jande. (1989). Histamine release from mast cells - effects of copper. PMID: 2476088. https://pubmed.ncbi.nlm.nih.gov/2476088/
[4] Schuschke et al.. (1994). Copper deficiency increases mast cell numbers. PMID: 7528379. https://pubmed.ncbi.nlm.nih.gov/7528379/