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Realistic Results of GHK-Cu (Copper Peptide) Therapy Per Item::L-Carnitine Shot Bottle (50mL) expression lines https://i.ebayimg.com/images/g/YkAAAOSwc8llb3W2/s-l400.png Though uncommon, vitamin B12 may sting a little on injection, though this is usually a short-lived side effect
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