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If you have a mild deficiency, it might take two to three shots spread out over a few days or weeks before you start feeling better
The CAS registry number 63-39-8 anchors the canonical chemical identifier
GHK-Cu (sister peptide) given as repeated 2 mg injections into rat wound chambers modulated decorin/biglycan and increased type-I collagen and GAGs grounds the milligram-per-injection magnitude sometimes cited for the class, but this is GHK-Cu, rat, wound-healing
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