GHK-Cu Dosage Guide: Protocols, Calculator & Safety
Everything you need to know about GHK-Cu dosing — protocols, safety, and where to buy.
Dose Range
Topical: 1-2% concentration in serum/cream applied 1-2x daily; Injectable: 200-500 mcg subcutaneous daily (community protocols)
Frequency
Once daily subcutaneous; twice daily topical
Cycle Length
4–12 weeks for injectable; ongoing for topical use
Half-Life
~30 minutes plasma half-life (tissue-level gene expression effects persist 12-24+ hours)
Administration Routes
Quick Reconstitution Calculator
Calculate syringe units instantly
Syringe Draw
10.0 units
2500 mcg/ml · 0.100 ml draw
Dosing Protocols
1 mg subcutaneous injection once daily for 4–6 weeks. Alternatively, apply topical GHK-Cu cream twice daily to target areas.
2 mg subcutaneous once daily for 8 weeks. Can combine with topical application for enhanced skin effects.
2–4 mg subcutaneous daily for 8–12 weeks, stacked with BPC-157 and/or TB-500 for comprehensive tissue remodeling. Add topical application for facial/skin-specific goals.
Weight-Based Dosing
Commonly Stacked With
Excellent stack with BPC-157 and TB-500 for enhanced tissue repair. Pairs well with microneedling for topical penetration. Some stack with epithalon for comprehensive anti-aging.
Related Compounds — Deeper Research Paths — GHK-Cu anchors copper-dependent tissue-remodeling protocols. Recovery-peptide pairings: BPC-157, TB-500, KPV. Hair and skin synergists: Minoxidil (topical vasodilator), Finasteride (5α-reductase inhibitor for AGA), RU-58841 (topical antiandrogen), and the Glow Blend combination. Antioxidant/longevity adjuncts often layered in skin protocols: Glutathione, NAD+, Epithalon (telomerase), and Thymosin Alpha-1 for immune-skin axis. For senescent-cell clearance that improves dermal ECM quality: Fisetin.
Side Effects & Safety
Contraindications
Active liver disease (when using at high systemic doses). Wilson's disease (copper metabolism disorder). Pregnancy or breastfeeding.
Additional Notes
Available as injectable (lyophilized powder) and topical cream/serum. Injectable: reconstitute with bacteriostatic water. Topical: apply to clean skin. GHK-Cu concentration naturally declines with age (600 pg/mL at age 20 to 80 pg/mL at age 60), providing rationale for supplementation.
Where to Buy GHK-Cu
Compare 13 listings across 8 vendors — from $0.00
Frequently Asked Questions
What is the recommended GHK-Cu dosage?
The typical dose range for GHK-Cu is Topical: 1-2% concentration in serum/cream applied 1-2x daily; Injectable: 200-500 mcg subcutaneous daily (community protocols). It is usually administered Once daily subcutaneous; twice daily topical. Always start with the lowest effective dose.
How often should I take GHK-Cu?
Once daily subcutaneous; twice daily topical
Does GHK-Cu need to be cycled?
Yes, typical cycle length is 4–12 weeks for injectable; ongoing for topical use.
What are GHK-Cu side effects?
Well-tolerated at standard doses. Mild skin irritation at application site (topical). Occasional headache, light sensitivity. Injection site reaction for injectable form.
Where can I buy GHK-Cu?
Compare 13 listings from 8 vendors on our price comparison page.
GHK-Cu Full Profile
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