All peptides
RecoveryResearch Phase

GHK-Cu

Topical, Subcutaneous injection
Written by Peptide Association Editorial TeamMedically reviewed by Ian Justl Ellis, MD, CPTLast reviewed Editorial policy

Overview

A naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) found in human plasma, saliva, and urine. GHK-Cu activates tissue remodeling by stimulating collagen synthesis, glycosaminoglycan production, and angiogenesis while suppressing fibrinogen synthesis.

Mechanism of Action

It modulates the activity of matrix metalloproteinases and influences over 4,000 genes related to tissue repair.

Research Summary & Key Findings

Studies demonstrate promotion of collagen types I and III synthesis, accelerated wound healing, and increased hair follicle size. Gene expression analysis shows broad regenerative gene activation. Topical application improves skin elasticity, firmness, and reduces photodamage.

Clinical Status

Research Phase

GHK-Cu is in the research phase with limited clinical data in humans. Current evidence is primarily derived from preclinical (animal or in vitro) studies.

Administration Routes

TopicalSubcutaneous injection

References

Primary literature

Study-level citations for this compound are being verified against the primary sources before publication. The database queries above return the current indexed literature in the meantime.

Related Peptides in Recovery

Start Your Consultation

Get an AI-proposed GHK-Cu protocol reviewed by a physician in our network.

Start Your Consultation

Find a Pharmacy

Browse PCAB-accredited and FDA 503B-registered compounding pharmacies that supply GHK-Cu.

Pharmacy Directory

Join the Association

Access exclusive peptide protocols, provider resources, and community support.

List Your Practice

Disclaimer: This information is provided for educational and research purposes only. It is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any peptide therapy. The Peptide Association does not endorse or recommend any specific treatment protocol. See our editorial policy for how this content is produced and reviewed.