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Recommended brands

Copper bisglycinate is sold by dozens of brands. We do not rank them on quality — they are grouped here by dose, low to high, because that is the choice that actually matters. The RDA is 900 mcg/day and the Institute of Medicine sets a tolerable upper intake level of 10 mg/day for adults.

2 mgStandard dose

Suits most adults who have a reason to supplement — comfortably above the 900 mcg RDA and well under the 10 mg upper limit.

Thorne Copper Bisglycinate

2 mg per capsule

Built on the TRAACS® copper bisglycinate chelate — the 1:2 copper-to-glycine form described throughout this guide.

Widely available standard dose
Well tolerated, including on an empty stomach

Pure Encapsulations Copper (glycinate)

2 mg per capsule

Labelled “copper glycinate,” which in practice is the same chelate — see glycinate vs bisglycinate.

Hypoallergenic, vegan capsule
Commonly stocked by practitioners

Formula IQ — Copper IQ

2 mg per capsule

A high-absorption copper built on the Albion® copper bisglycinate chelate, formulated around mitochondrial energy production and iron metabolism.

Albion® chelated copper bisglycinate
Veggie capsule

4–8 mgHigher dose

Approaching the upper limit once dietary copper (roughly 1.1–1.4 mg/day) is included. Worth being deliberate about.

Dr. Mercola Copper Bisglycinate

4 mg per tablet · up to 8 mg/day

A mini-tablet dosed at 4 mg, marketed at up to 8 mg/day across two tablets.

One tablet to maintain, two to raise levels
Watch total daily intake against the 10 mg limit

10 mg+Highest dose

Meets or exceeds the 10 mg upper intake level, so these strengths are intended for supervised use rather than routine daily supplementation.

Pure Minerals

10 mg and higher

Higher-strength copper bisglycinate, for people who specifically need a dose above the standard 2 mg.

10 mg and higher strengths
Not a general-maintenance dose
Use under clinical supervision

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Disclosure: This site is owned by Mineral Cure LLC, which is affiliated with Pure Minerals. We disclose that relationship wherever Pure Minerals appears, and it does not change the dosage guidance here, which follows the NIH Office of Dietary Supplements and the Institute of Medicine. See our Editorial Standards.