In animal studies (pigs), strong systemic wound healing was induced at approximately 1.1 mg/kg body weight, roughly 300-fold below GHK-Cu's established toxic threshold in the same model
topical works locally with a strong published safety record
Semaglutide commonly causes nausea, vomiting, and gastrointestinal changesespecially during dose escalationas it slows digestion and signals fullness
Some practitioners recommend morning injection to align with the body's natural repair cycle
The acid disrupts the copper-peptide bond, releasing free copper while deactivating the GHK tripeptide
FDA materials discuss GHK-Cu in cosmetic and compounding-related contexts, including different treatment of non-injectable and injectable routes [8], [11], [19]