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While both are copper peptides, AHK-Cu is more specifically studied for its potential effects on hair follicle stimulation, whereas GHK-Cu has a broader research history in general skin regeneration and wound healing
The solvent Another possible cause of painful B12 injections is the solvent used to dissolve the B12 in the vial
Blood tests show equivalent B12 status whether supplementing with cyanocobalamin or methylcobalamin at equal doses
However, high B12 levels in the blood can be a sign of underlying kidney or liver disease, indicating that these organs are struggling to get rid of excess B12
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