ahk-cu reddit GHK-Cu Peptide Serum Skincare 2 Year Results Aged 37 : r/Biohackers fragrance free GHK-Cu vs AHK-Cu: Which Copper

Let's first look at the basic definitions of AHK-Cu and GHK-Cu: GHK-Cu (Glycyl-L-histidyl-L-lysine + Copper): A naturally occurring copper peptide found in human plasma and tissues

That is a deliberately narrow claim: the number is what the protocol says, the math shows exactly how it converts to a syringe draw, and everything about whether the compound does anything in a human is left to the honest evidence section rather than smuggled into the dose

Anyone quoting you a clean 95% oral bioavailability number for humans is repeating a marketing figure, not something from the literature

References Neelakantan H, et al

Rodent (diet-induced obesity, 28 days) Babula et al