§ 01 Overview
Overview
Copper-binding tripeptide with broad effects on wound healing, collagen synthesis, and hair follicle function.
Strong dermatological evidence. Used topically in clinical and cosmetic formulations with published RCTs.
§ 02 Mechanism
Mechanism of action
GHK-Cu acts as a copper carrier and modulates gene expression across hundreds of genes involved in collagen and elastin synthesis, anti-inflammatory pathways, and stem cell activity. It has been shown to reset gene expression to more youthful patterns in vitro.
- 01Improved skin firmness and elasticity
- 02Reduced appearance of fine lines
- 03Hair follicle support
- 04Wound healing in clinical settings
§ 03 Dosing
Dosing protocol
Standard Protocol
- Vial
- 50 mg or 100 mg (injectable)
- BAC Water
- 2 ml BAC water
- Dose Range
- 1 – 3 mg per dose (injectable)
- Starting Dose
- 1 mg SubQ
- Route
- SubQ
- Timing
- PM
- Frequency
- Daily or EOD
- Cycle
- 4–8 weeks
§ 04 Evidence
Evidence & research
Strong dermatological evidence. Used topically in clinical and cosmetic formulations with published RCTs.
FDA Status
Cosmetic ingredient approved for topical use. Injectable form not FDA-approved as a drug.
§ 05 Stacks
Common stacks
§ 06 News
In the news
8 articles from the last 12 months · updates hourly
What Is GHK-Cu? The Copper Peptide, Explained - Mommyish
What Is GHK-Cu? The Copper Peptide, Explained Mommyish
BPC-157, TB-500, and GHK-Cu Peptide Blend in Regenerative Research - Dailyhunt
BPC-157, TB-500, and GHK-Cu Peptide Blend in Regenerative Research Dailyhunt
BPC-157, TB-500, and GHK-Cu Peptide Blend in Regenerative Research - The Sunday Guardian
BPC-157, TB-500, and GHK-Cu Peptide Blend in Regenerative Research The Sunday Guardian
ghk cu dosage subq ghk-cu dosage subcutaneous topical ✨Glow from within with GHK-Cu Copper Peptide ✨, This - news36live
ghk cu dosage subq ghk-cu dosage subcutaneous topical ✨Glow from within with GHK-Cu Copper Peptide ✨, This news36live
is ghk cu expensive POV: your skincare routine just got VERY expensive-looking 😭✨, Watch me make my luxury facial serum using raw topical GHK-CU copper peptide 💙, Known for supporting:, ✨ skin rejuvenation, ✨ collagen - news36live
is ghk cu expensive POV: your skincare routine just got VERY expensive-looking 😭✨, Watch me make my luxury facial serum using raw topical GHK-CU copper peptide 💙, Known for supporting:, ✨ skin rejuvenation, ✨ collagen news36live
Meet GHK-Cu, the Copper Peptide Taking Over Your Skincare Feed—Here's Whether It's Worth the Hype - Marie Claire UK
Meet GHK-Cu, the Copper Peptide Taking Over Your Skincare Feed—Here's Whether It's Worth the Hype Marie Claire UK
ghk cu reddit First time getting GHK Cu. Does this look ok? Not sure if this is how its supposed to look. : r/PeptidePathways - news36live
ghk cu reddit First time getting GHK Cu. Does this look ok? Not sure if this is how its supposed to look. : r/PeptidePathways news36live
ghk cu for injury Christopher Shade, PhD, founder and CEO of Quicksilver Scientific, discusses how oral peptides are transforming injury care and healing., Known as the “Wolverine Stack,” BCP-157, TB-500, and - news36live
ghk cu for injury Christopher Shade, PhD, founder and CEO of Quicksilver Scientific, discusses how oral peptides are transforming injury care and healing., Known as the “Wolverine Stack,” BCP-157, TB-500, and news36live
§ 07 Sourcing
Sourcing & supply
Regulatory status
Restricted from compounding
Placed on the FDA's 503A Category 2 list and cannot be lawfully compounded in the US. No brand pharmacy alternative exists. US buyers encounter only research-use-only (RUO) channels, which the FDA's Intended Use Doctrine treats as unapproved drug sales.
503B pharmacies · 2
Olympia Pharmaceuticals
Rx required35+ year family-owned dual 503A/503B licensed in 48–49 states. Among the cleanest mid-sized 503Bs operating today.
Hallandale Pharmacy (Pharmcore)
Rx required503A with historic warning letter (2020, closed out 2022). Major telehealth fulfillment partner.
Telehealth (Rx) · 2
International · 5
Rupharma
12+ year Russian pharmacy reseller. Reviews.io 4.84/5 (81+). Has a genuine US warehouse for common peptides.
Trident Peptides
1,299+ Trustpilot reviews (5-star). Strongest review base in UK research peptides. No visible ISO/GMP; COAs not posted.
Direct Peptides
Multi-region geo-routed mirrors. Multiple credible scam complaints. Documented customs seizures. Avoid absent stronger evidence.
Pharma Lab Global
Budget pricing but significant QC concerns. Claims HPLC+MS 'on request' not displayed.
Canlab
Health Canada public warning December 2023. Operates across mirror domains to evade takedowns. Avoid.
Research-use-only · 7
Swiss Chems
Established SARMs/peptide vendor. FDA warning letter Dec 2024 for GLP-1s. Weaker peptide QC than SARMs QC.
Limitless Life Nootropics
'Only BBB-accredited peptide company' (since 2020). Claims three-lab third-party testing. Broad catalog.
Core Peptides
Broad catalog, widest payment range. Mid-credibility: Knoji 2.5/5 and one scam-impersonation report.
Ascension Peptides
Among newer RUO vendors with cleaner credibility signals. SafeCert Labs (CLIA-certified) testing, 4.8 Trustpilot. US-only.
Modern Aminos
Multi-vial batch third-party testing. 5-star Trustpilot (1,400+ reviews). US- and EU-facing.
Peptide Warehouse
US-made, independent third-party testing including endotoxin and heavy-metal panels. Distinct from similar-sounding copycat domains.
BioTech Peptides
Claims >99% purity via HPLC + MS. Accepts cards and PayPal. 30-day money-back.
Listings are informational, not endorsement. Verify credentials and flags against FDA and PCAB databases before purchasing. Full directory & how to verify →
§ 09 Safety
Safety & side effects
Side effects
- 01Copper accumulation risk at very high doses
- 02Injection site tingling
- 03Skin darkening rare
Contraindications
None specified.
§ 10 Questions
GHK-Cu FAQ
- What is GHK-Cu?
- Copper-binding tripeptide with broad effects on wound healing, collagen synthesis, and hair follicle function. GHK-Cu acts as a copper carrier and modulates gene expression across hundreds of genes involved in collagen and elastin synthesis, anti-inflammatory pathways, and stem cell activity. It has been shown to reset gene expression to more youthful patterns in vitro.
- What is GHK-Cu used for?
- Reported uses include improved skin firmness and elasticity, reduced appearance of fine lines, hair follicle support, and wound healing in clinical settings. Evidence strength is rated Clinical — see the evidence section for detail.
- How is GHK-Cu dosed?
- Commonly referenced dosing is 1 – 3 mg per dose (injectable), typically daily or eod, administered SubQ. This is educational reference only; consult a licensed clinician before use.
- How do you reconstitute GHK-Cu?
- For GHK-Cu, vials commonly come in 50 mg or 100 mg (injectable) and a common reconstitution is 2 ml BAC water. Use the reconstitution calculator to convert any vial size and water volume into exact insulin-syringe units.
- What are the side effects of GHK-Cu?
- Commonly reported side effects include copper accumulation risk at very high doses, injection site tingling, and skin darkening rare. This list is not exhaustive.
- Is GHK-Cu legal?
- Placed on the FDA's 503A Category 2 list and cannot be lawfully compounded in the US. No brand pharmacy alternative exists. US buyers encounter only research-use-only (RUO) channels, which the FDA's Intended Use Doctrine treats as unapproved drug sales. FDA status: Cosmetic ingredient approved for topical use. Injectable form not FDA-approved as a drug..