Neuropsychopharmacology, 15 , 456464
The total radioactivity concentrations in the kidney, liver, stomach wall, thymus, spleen, intestine, lung, skin, and body fat were reduced by approximately 50% compared with the peak concentration in the same tissue (1 h after administration)
Severe allergic reactions, such as itching or difficulty breathing, are rare but possible
2010 Mar;16(3):BR81-88
Pain is gone
GHK-Cu is the ingredient contained within the topical copper peptides that have been available in beauty clinics for forty years, the main caveat being that topical GHK-Cu must successfully penetrate the stratum corneum to access the dermis