negatives of ghk cu GHK-Cu is a naturally occurring peptide found in human plasma, saliva, and urine. However, as we age, we lose our capacity for natural production. , Copper tripeptide helps to activate wound healing, GHK-Cu Topical Copper Peptide Serum

Kang J, Ge C, Yu L, Li L, Ma H

These have completely different mechanisms than copper peptides

PMID: 28228068 Stress in Gastrointestinal Tract and Stable Gastric Pentadecapeptide BPC 157

When its chronically elevated, that off-switch stops working

Cosmetic formulators typically dissolve copper peptide powder in the aqueous phase of serums, creams, or treatment products, maintaining pH levels between four and seven to preserve the stability of the copper-peptide complex

Nevertheless, despite these cautionary notes, it is the case that many neutralization assays using pseudoviruses and target cell lines have proven effective at broadly predicting the behaviour of antiviral antibodies in vivo, including those against HIV and SARS-CoV-2 4,5,6,7,8,9