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Everything you need to know about GHK-Cu dosing — protocols, safety, and where to buy.
Dose Range
1–4 mg per injection (subcutaneous); 0.5–2 mg topical per application
Frequency
Once daily subcutaneous; twice daily topical
Cycle Length
4–12 weeks for injectable; ongoing for topical use
Half-Life
~30–60 minutes (rapid clearance, effects persist due to gene activation)
Calculate syringe units instantly
Syringe Draw
10.0 units
2500 mcg/ml · 0.100 ml draw
Contraindications
Active liver disease (when using at high systemic doses). Wilson's disease (copper metabolism disorder). Pregnancy or breastfeeding.
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 6 listings across 5 vendors — from $34.99
The typical dose range for GHK-Cu is 1–4 mg per injection (subcutaneous); 0.5–2 mg topical per application. It is usually administered Once daily subcutaneous; twice daily topical. Always start with the lowest effective dose.
Once daily subcutaneous; twice daily topical
Yes, typical cycle length is 4–12 weeks for injectable; ongoing for topical use.
Well-tolerated at standard doses. Mild skin irritation at application site (topical). Occasional headache, light sensitivity. Injection site reaction for injectable form.
Compare 6 listings from 5 vendors on our price comparison page — starting from $34.99.
GHK-Cu Full Profile
Research data, mechanisms, and pricing
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