The most commonly reported ghk-cu side effects are injection-site reactions: localized redness, mild swelling, or transient pain at the injection point
[DOI] [PMC free article] [PubMed] [Google Scholar] 2.Fan X, Li A, Yan Z, Geng X, Lian L, Lv H, Gao D, Zhang J
The peptide stacking guide covers exact protocols
However, injection-based use carries important concerns, including sterility, contamination risk, uncertain dosing, and lack of regulatory oversight
Food and Drug Administration (FDA) as a therapeutic drug, its regulatory status has been the subject of ongoing review as additional scientific and safety data become available
doi: 10.1148/radiol.231143, 72 GovorunovaE