Common signs include fatigue, weakness, and neurological changes such as numbness or tingling in the hands and feet
Because its research-grade (rather than consumer-approved) and considering its ability to cross the blood brain barrier, the key is: start modestly, track your response, and adjust only when justified
AHK-Cu increased Bcl-2 and decreased Bax
What GHK-Cu adds to the formulation: Gene expression modulation across hundreds of genes including collagen genes (Type I, III), tissue inhibitors of metalloproteinases, anti-inflammatory mediators Collagen synthesis stimulation, specifically Type I and Type III collagen the structural proteins of skin, connective tissue, and many other tissues Anti-inflammatory signaling through investigated effects on TNF-, IL-6, and NF-B pathways Copper-peptide chemistry effects including cofactor activity for skin-relevant enzymes Skin-research and hair-research applications (the GHK-Cu literature in these areas is substantial) For the GHK-Cu deep-dive, see Copper Peptides Explained
