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Description
But another topical ingredient gaining interest is GHK-Cu (a copper peptide often found in cosmetic products)

Symptoms to look out for may include: Megaloblastic anemia
This is the exploratory phase
Effect of Sirt3 on retinal pigment epithelial cells in high glucose through Foxo3a/ PINK1-Parkin pathway mediated mitophagy

These data suggest that GH may alter the clearance of compounds known to be metabolized by CYP450 liver enzymes (e.g., corticosteroids, sex steroids, anticonvulsants, and cyclosporine)

And quite often, it points to the same thing: low vitamin B12
