Administration Route by Peptide Type When Injectable GHK-CU Makes Sense The injectable form provides systemic benefits that topical cannot achieve: Whole-body tissue regeneration effects Internal organ support Consistent blood levels Better bioavailability Combined with other injectable peptides When Topical Makes Sense Topical application excels for: Targeted skin treatment Hair and scalp applications Those avoiding injections Combination with skincare routines Localized wound healing For maximum benefit, some protocols use both injectable GHK-CU for systemic effects and topical copper peptides for targeted skin benefits
I've been doing subcut for three years plus
The increase in younger people may relate to excess weight and dietary issues
Most studies are rodent models
Circ Res 116:15611578 Sikiric P, Seiwerth S, Grabarevic Z, Rucman R, Petek M, Jagic V, Turkovic B, Rotkvic I, Mise S, Zoricic I et al (1997) Pentadecapeptide BPC 157 positively affects both non-steroidal anti-inflammatory agent-induced gastrointestinal lesions and adjuvant arthritis in rats