GHK-Cu vs Sermorelin
Well Studied vs Well Studied
synergistic Mechanism-based · 47% GHK-Cu and Sermorelin work through complementary pathways. Growth hormone signaling supports tissue repair processes. A well-established combination in recovery protocols.
Molecular Data
GHK-Cu Sermorelin
Weight 404.96 Da 3,358 Da
Half-life 0.5-2 hours 10-12 minutes
Chain 3 amino acids 29 amino acids
Type Copper tripeptide GHRH analog
Key Benefits
GHK-Cu
01 Enhanced collagen production (70% increase in type I and III)
02 Improved skin elasticity
03 Reduced fine lines and wrinkles
04 Accelerated wound healing
05 Hair growth stimulation
06 Antioxidant protection
Sermorelin
01 FDA-proven efficacy
02 Maintains natural GH pulsatile patterns
03 Preserves pituitary function
04 1.26kg lean mass increase documented in elderly
05 IGF-1 mediated anabolic effects
06 Allows natural feedback regulation
Dosing Protocols
GHK-Cu
0.5-2% topical or 1-3mg injectable / 1-2x daily
Systemic anti-aging 1-2mg 1x daily
Enhanced regeneration 2-3mg 1-2x daily
Sermorelin
200-300mcg per dose (up to 500mcg for athletic performance) / Once daily at bedtime (aligns with natural GH pulse)
Anti-aging/Longevity 200-300mcg Once at bedtime
Athletic Performance 300-500mcg Once at bedtime
Body Composition 200mcg 5 days weekly
Combination Therapy 200mcg + GHRP Once daily
Side Effects
GHK-Cu
Mild skin irritation initially (usually resolves)
Increased photosensitivity
Sermorelin
Injection site reactions (16.7% of patients - generally mild)
Nasal irritation (intranasal route)
Contraindications
Known copper sensitivity or Wilson's disease
Active skin infections at application site
Pregnancy or breastfeeding (injectable)
Active malignancy
Pituitary tumors
Pregnancy
Research Evidence
GHK-Cu Sermorelin
Status Well Studied Well Studied
References 5 studies 5 studies
Latest July 2025 November 2024
FDA Approved No No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.