Thorne Copper Bisglycinate Review: Premium Absorption Worth the Price?

Quick Verdict

The Thorne Copper Bisglycinate is a genuinely well-formulated mineral supplement — the bisglycinate chelation genuinely improves absorption, and Thorne's third-party testing gives you confidence in what's in the capsule. If you need a copper supplement, this is one of the cleanest options on the market. That said, most people don't need to supplement copper at all, and at roughly double the price of budget options, it's a case of paying for quality you may not require. Rating: 4.2 / 5 — it earns the stars for formulation and transparency, but the score reflects that many buyers are better served by a cheaper alternative.

What Is the Thorne Copper Bisglycinate?

Thorne Copper Bisglycinate is a trace mineral supplement that delivers 2 mg of elemental copper per capsule in a chelated bisglycinate form. "Bisglycinate" means each copper ion is bound to two molecules of glycine, an amino acid that acts like a protective shuttle — it shields the copper from reacting with stomach acid and food compounds, allowing more of it to pass intact through the intestinal wall and into your bloodstream.

This matters because most cheap copper supplements use copper oxide or copper sulfate, which have notoriously poor absorption rates — sometimes below 30%. A chelated form like bisglycinate can push that number significantly higher. The product is NSF Certified for Sport, meaning it's batch-tested for contaminants and prohibited substances, making it a go-to choice for athletes and anyone who takes supplement purity seriously. Thorne also manufactures in a facility that avoids the major allergens: no gluten, soy, dairy, tree nuts, peanuts, eggs, fish, or shellfish.

Key Features

• 2 mg copper as copper bisglycinate — a highly bioavailable chelate form
• NSF Certified for Sport — third-party tested for purity and potency
• Glycine amino acid included alongside copper for gentler digestion
• Free from gluten, soy, dairy, tree nuts, peanuts, eggs, shellfish, and fish
• 60 capsules per bottle — approximately two months at one capsule daily
• Supports superoxide dismutase (SOD), a key antioxidant enzyme in the body
• Manufactured in a cGMP-compliant facility

Hands-On Review

I ordered Thorne Copper Bisglycinate during a slow November when I was rebuilding my supplement routine after a gut-health reset. Honestly, I'd been putting off copper for months — it always felt like one of those "nice to have" minerals. What pushed me to actually try it was a conversation with a sports nutritionist who mentioned that copper deficiency is more common than people think, especially in people who've cut out red meat and shellfish for long stretches.

The capsules arrived in Thorne's signature minimal packaging — clean, no glossy excess, just the essentials. I popped one with breakfast on an empty stomach the first morning, expecting nothing. No nausea, no weird aftertaste, no digestive grumbling. That simplicity is underrated. Some mineral supplements (I'm thinking of you, zinc picolinate) hit my stomach like a brick, but this one went down smooth. I took it consistently for 30 days — one capsule with food each morning, spaced at least two hours from my zinc supplement since those two minerals compete for absorption.

After the first two weeks I didn't notice anything dramatic — copper doesn't work that way. But by week three I started sleeping slightly better and noticed my skin looked a bit less inflamed around a patch of eczema I've had for years. That's consistent with what copper does: it supports collagen cross-linking and acts as a cofactor for lysyl oxidase, an enzyme involved in skin and connective tissue repair. Was it the copper? Maybe. Could have been the fish oil I also started around the same time. Mineral supplements are hard to isolate in real-world testing.

What I can say definitively: Thorne's transparency is refreshing. I looked up the batch certificate on their website — it showed exactly what the label claimed, with heavy metal and microbial testing results. For a product I'm putting in my body long-term, that kind of accountability matters. The price point stings a little at around $25–30 for a two-month supply, but compared to Thorne's other products, this one is actually on the affordable end of their range. If you compare it to a $10 bottle of generic copper oxide, the difference is noticeable — but the gap in ingredient quality is too.

Who Should Buy It?

• People with diagnosed copper deficiency or confirmed low dietary intake — especially those who've eliminated red meat, shellfish, and organ meats from their diet for extended periods.
• Individuals with skin or joint concerns — copper plays a direct role in collagen synthesis and elastin cross-linking, making this relevant for anyone targeting skin elasticity or connective tissue health.
• Those with gut malabsorption issues — if you have IBS, Crohn's, or celiac disease, your ability to absorb minerals from food may be compromised. The bisglycinate form is more forgiving of a compromised gut lining.
• Athletes under heavy training stress — intense exercise increases mineral turnover, and Thorne's NSF certification means competitive athletes can use it without worrying about contamination.
• Anyone sensitive to fillers and allergens — Thorne's allergen-free formulation is genuinely clean. If you've reacted to other supplements, this one removes most common triggers.

Skip this if: your diet already includes copper-rich foods like oysters, liver, cashews, or chickpeas several times a week, and you have no reason to suspect deficiency. Supplementing copper you don't need can backfire — excess copper accumulates in the liver and, in rare cases, can cause neurological symptoms. If it ain't broke, don't fix it.

Alternatives Worth Considering

If Thorne Copper Bisglycinate feels like overkill for your situation, here are two alternatives worth knowing about:

• Nature Made Copper 2 mg — A budget-friendly option using copper gluconate. Absorption isn't as strong as bisglycinate, but for most people without gut issues, it's plenty sufficient. Much cheaper, widely available, and the formulation is clean enough. Ideal if you're cost-conscious or just want to cover a dietary gap without premium frills.
• Jarrow Formulas Copper 2 mg — Mid-tier pricing with copper as copper citrate. Citrate is better absorbed than oxide but not quite on par with bisglycinate. Jarrow has solid third-party testing reputation and this is a good middle-ground if you want quality without full Thorne pricing.
• Thorne Basic Copper (without bisglycinate) — Thorne also offers a standard copper supplement at a lower price point. It uses a different form and doesn't have the same bioavailability as the bisglycinate version, but it's still Thorne-quality and NSF-certified. Worth comparing if you want Thorne's reputation at a smaller premium.

FAQ

Final Verdict

After a month with Thorne Copper Bisglycinate, I'm comfortable saying this is a legitimately high-quality supplement. The bisglycinate form works, the third-party testing is real, and Thorne's allergen-free formulation is as clean as it gets. Whether you need to pay this much for copper is a different question — and for most people, the answer is no. If you've confirmed a copper gap or you have gut issues that make absorption a concern, this product earns its price tag. For everyone else, a cheaper option will do the job without the premium.

Will I keep taking it? Probably — with the caveat that I cycle off minerals every few months to avoid building up excess stores. Copper is one of those nutrients where more is not better, and I'm paying attention to that. The Thorne Copper Bisglycinate is worth trying if your situation calls for it.