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No this is normal, and your peptides are fine

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GHK-Cu, first identified in 1973 from mammalian plasma, functions as a naturally occurring copper-peptide complex that influences approximately 31% of the human genome, resetting gene expression patterns to favor tissue repair while delivering bioavailable copper essential for enzymatic processes underlying collagen synthesis and antioxidant defense

Gastrointestinal and liver physiology , 320 (6), G983G989

Preclinical studies investigate whether GHK-Cu affects cellular structures or induces inflammation