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Concentration and frequency matters Many copper peptide side effects stem not from the ingredient itself but from using too much, too often, or too concentrated a product

Removal of blood and blood component donation restrictions (including apheresis) if conducted in an accredited collection center

Use a new sterile needle for each vial access

Evidence Gaps# Direct head-to-head comparison studies between GHK-Cu and related peptides are absent from the published literature

We are always very transparent about the pharmacies that we use, and we have good relationships with our pharmacies

For example, if your supplement happens to be 10 g, then cutting it in half and taking the resulting 5 g supplement twice a day (at least 4 hours apart) will meet the EFSA recommendations