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Contraindications GHK-Cu peptide therapy may not be suitable for individuals who: Have known hypersensitivity to copper peptides Are pregnant or breastfeeding without medical clearance Have active skin infections at the application or injection site A consultation is required to determine suitability

Moreover, the chemical nature of the C-terminal residue side chain determines ligand contact with RAMP and can influence activity at AMYRs and CTR 18,19

Biology (Basel)

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide first isolated in 1977 that helps regulate deep, restorative sleep without the sedative hangover of traditional sleep medications