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It is not FDA-approved for any indication, which means it exists in a regulatory gray area in many jurisdictions

The mechanism involves modulation of dopamine and serotonin systems alongside promotion of nerve growth factor

The stomach is an aggressive environment of acid and proteolytic enzymes (pepsin, then pancreatic proteases in the small intestine) designed precisely to break peptide bonds

Both AOD 9604 and hGH caused significant decreases in body weight in obese mice

A 2025 study found GHK-Cu combined with minoxidil produced 35% terminal hair growth versus 18% with minoxidil alone

[DOI] [PMC free article] [PubMed] [Google Scholar] 114.Bartels ED, Guo S, Kousholt BS, Larsen JR, Hasenkam JM, Burnett J, Jr., et al