It is not a DEA-scheduled substance, so possession is not illegal but it also cannot be legally marketed as a drug or dietary supplement
Additional investigations have explored relationships between GHK-Cu and copper-dependent regulatory proteins, redox-associated signaling pathways, and metalloprotein activity, contributing to a broader understanding of metallopeptide signaling systems
Some of the documented effects: DNA repair properties, including the ability to reset gene expression patterns associated with aging Clearance of accumulated damaged proteins linked to cellular senescence Promotion of nerve fiber regeneration and increased production of neurotrophic factors Anti-cancer mechanisms, including prevention of metastasis in colon cancer Reversal of fibroblast dysfunction associated with COPD Reduction of anxiety and aggression via neurological pathways Pain-relieving effects through decreased expression of pain-related genes Stimulation of wound healing, even in tissue compromised by prior steroid use Not sure which peptide protocol fits your goals

Glutathione-S-transferase (GSTP) that participates in the conjugation of GSH to reactive cysteines (S-glutathionylation) seems to play an important role in idiopathic pulmonary fibrosis lung fibrogenesis, since GSTP immunoreactivity is increased in the lungs of idiopathic pulmonary fibrosis patients, notably within type II epithelial cells (128, 129)
No cardiovascular concerns
That AUC difference translates directly to cumulative fibroblast exposure