does ghk cu make you infertile GHK-Cu Peptide GHK-Cu Rx Protocol
Description
For both peptides, the primary safety concern is source quality, not the molecules themselves

For more on injection technique, see our Subcutaneous vs Intramuscular Injection guide

The in vitro tendon fibroblast migration effect (~2.3-fold at 2 g/mL) aligns with these repair signals

Preclinical rodent studies support effects on angiogenesis, endothelial function, and nitric-oxide-related signaling, though these effects are reproducible in animals but not yet validated in humans
