PeptideSearch

GHK-Cu

Very early research

The research is at the earliest stage – mostly cells in a lab dish. It is far too early to say much.

Also called Copper tripeptide-1 / Gly-His-Lys copper / Copper peptide

A three-part peptide that carries copper, studied in skin cells and used in cosmetics. Research beyond the lab dish is thin.

The basics

What is it?
A tiny three-part peptide that holds onto copper. It is found naturally in blood plasma.
What do we know?
In lab dishes and skin samples it changes which genes switch on and off in skin cells. It is widely used in cosmetics.
What do we still not know?
Whether it does anything meaningful when swallowed or injected. Almost all the work is in a lab dish.

Can a doctor prescribe this?

No. Pharmacies are not on record as being allowed to make this into a medicine.

The FDA has not approved this as a medicine.

Not FDA approved for therapeutic use and not on the 503A bulks list; sold cosmetically in topical products.

Official status: Not on the 503A bulks list. Checked 2026-05-20.

Lab suppliers we list: 16

Doses used in research

Taken word for word from the studies and trials listed on this page. This is not a recommendation and not a dose for anyone to take.

In human trials

In animal studies