ghk cu antibody formation or immunogenicity GHK-CU – Peptide Foundry GHK-Cu for Skin: What the
Description
For long term storage, it is recommended to refrigerate the powder at 2-8C or freeze it at -20C for extended preservation

Mild and Temporary Reactions Some users may experience minor side effects, such as: Injection site reactions Mild redness, swelling, or irritation at the injection site

Holst JJ, Windelov JA, Boer GA, Pedersen J, Svendsen B, Christensen M, Torekov S, Asmar M, Hartmann B, Nissen A
However, unlike ghrelin or older peptides, it avoids undesirable side effects making it one of the cleanest GH secretagogues available