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Is GHK Cu actually worth it? is genuinely one of the most common questions in my comments, so let me finally answer it properly. The short version: copper peptides have real research behind Expression and Purification of Recombinant GHK Tripeptides Are Able to Protect against Acute Cardiotoxicity from Exposure to Waterborne Copper in Zebrafish GHK Cu Dosage: A Doctor's Guide to Calculations, Mixing & Safety Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application PMC
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