What Is GHK-Cu?
GHK-Cu is the copper complex of GHK, a naturally occurring tripeptide (glycyl-L-histidyl-L-lysine) that binds copper ions. It is supplied synthetically as a lyophilised powder. Its solutions carry a characteristic faint blue-green tint, which comes from the bound copper and is completely normal.
Everything on this page describes the handling and properties of a research compound in a laboratory context only. It is not guidance for human or animal use. Products supplied by North Peptides UK are for research use only and are not for human or animal consumption.
Why Is GHK-Cu Studied?
GHK-Cu is a frequent subject of laboratory research. Scientific interest centres on copper-peptide chemistry and on skin and connective-tissue research models, where GHK and its copper complex are investigated in vitro and in cell-based studies.
This is an active research area rather than settled science, so GHK-Cu is supplied purely as a reference research compound. North Peptides UK makes no claims about effects in humans, and nothing here is guidance for human or animal use.
How GHK-Cu Is Supplied
GHK-Cu is stocked as a 50mg lyophilised vial, listed with supplier-stated 99%+ purity and stored frozen until dispatch, with supplier documentation available on request where held. It is UK stocked and dispatched within 24–48 hours of confirmed payment on business days, and is also one of the four compounds in the KLOW Stack research blend.
Handling and Reconstitution
GHK-Cu dissolves well in bacteriostatic water. Expect the slight blue-green tint from the copper once reconstituted — this is normal and not a sign of contamination. Add the solvent down the side of the vial, swirl gently, and refrigerate the prepared solution. Our reconstitution guide covers the full procedure.
Storage and Stability
In lyophilised form, GHK-Cu is stable and kept frozen for longer-term storage, away from light. Once reconstituted, refrigerate at 2–8°C, keep out of direct light, and avoid repeated freeze–thaw cycles. With bacteriostatic water, a reconstituted solution typically stays stable for up to 28 days when refrigerated.
Sourcing GHK-Cu in the UK
North Peptides UK stocks GHK-Cu domestically, with no import delays for UK-based researchers. Every batch is listed with supplier-stated 99%+ purity with supplier documentation available on request where held. For questions about a batch before ordering, reach the team directly on Telegram at @NORTHPEPTIDESUK.
Frequently Asked Questions
What is GHK-Cu supplied as?
A 50mg lyophilised vial, listed with supplier-stated 99%+ purity and stored frozen until dispatch, with supplier documentation available on request where held.
Why does a GHK-Cu solution look blue-green?
The faint blue-green tint comes from the copper bound in the peptide complex. It is entirely normal and not a sign of contamination.
Can GHK-Cu be used in humans?
No. GHK-Cu is supplied strictly for laboratory and scientific research and is not for human or animal consumption.
Is GHK-Cu in the KLOW Stack?
Yes. GHK-Cu is one of the four compounds in the KLOW Stack research blend, together with TB-500, BPC-157 and KPV.