ghk-cu copper overload risk high doses “Is actually worth it?” is genuinely one of the most common questions in my comments, so let me finally answer it properly., The short version: peptides have real research behind them, Can GHK-Cu Copper Peptide Tighten

Copper peptides, particularly those derived from tripeptide sequences such as GHK (glycyl-L-histidyl-L-lysine), have emerged as a compelling subject in research due to their hypothesized roles in tissue remodeling, antioxidant defense, and cellular signaling

There are exceptions to this but in general it is left to Pharmaceutical companies to develop medicines that can be used to treat diseases like Pernicious Anaemia

Pale or yellowish skin: A pale or jaundiced appearance may occur due to the effect of B12 deficiency on red blood cell production

Virtually none of the many other competing copper peptide products available are based on actual studies