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Research demonstrates that GHK-Cu stimulation of collagen synthesis begins at concentrations between 10 and 10 M and maximizes at 10 M, with effects independent of changes in cell proliferation, indicating direct activation of synthetic machinery rather than simply increasing fibroblast numbers

But apart from its numerous potential benefits, researchers may be curious about GHK-Cu side effects

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J Mol Struct 1276:134804

Mild Cases/Maintenance: 300600mg per day

No significant small-study effects were performing Beggs test ( P = 0806)