ghk-cu copper overload risks is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true?, peptide, known as GHK-Cu, has a growing body of peer Copper Peptides: The New Skin
Description
the delivery system includes those which by-pass gut and liver and thus first pass effect / metabolism

Huber, J

Epithalon is chemically stable relative to many peptides, though proper handling remains essential, particularly for large-format 50mg vials
American Journal of Veterinary Research
doi: 10.1016/J.COMPBIOLCHEM.2016.08.003 113 BhartiSKKrishnanSKumarARajakKKMurariKBhartiBKet al