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Pregnancy and breastfeeding are also contraindicated due to a lack of safety data for systemic use in these populations
GHK-CU uses higher doses (1-2mg) compared to BPC-157 (250-500mcg) and TB-500 (250-500mcg)
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The quality and purity of peptide preparations can vary significantly between sources, raising concerns about consistency and safety
Evidence also needs consistency
GHK-Cu is a photolabile copper(II) complex, and freeze-thaw cycling can disrupt the copper coordination sphere independently of any degradation of the peptide backbone, which means cumulative in-use exposure is a real variable and not a generic caution
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