is injectable ghk cu better than topical A Dermatologist's Take on the Copper Peptide (GHK-Cu) Trend Injectable Peptides for Anti-Aging? A

Whether antioxidant molecules, including cysteine and GSH, given exogenously have a therapeutic effect has long attracted interest [11]

However, at this stage, we do not yet have sufficient high-quality human data to fully understand the safety, efficacy, and long-term effects of BPC-157

Sikiric P, Seiwerth S, Rucman R, Kolenc D, Vuletic LB, Drmic D, Grgic T, Strbe S, Zukanovic G, Crvenkovic D, Madzarac G, Rukavina I, Sucic M, Baric M, Starcevic N, Krstonijevic Z, Bencic ML, Filipcic I, Rokotov DS, Vlainic J (2016) Brain-gut axis and pentadecapeptide BPC 157: theoretical and practical implications

In animal studies, it has been generally well-tolerated with no significant side effects reported