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Nutritional surveys conducted in the West as far back as the 1990s revealed a significant decline in dietary copper content, with half of adults consuming less than the amount recommended by the European Community and the United Kingdom (95)

The injectable form was placed on the FDA's Category 2 bulk drug substances list in 2023, restricting compounding pharmacies from preparing it under Section 503A

Pharmacy-grade sourcing: your GHK-Cu is dispensed through a licensed compounding pharmacy

As for skincare, menthol seems to be a mixed bag

24 Copper homeostasis is tightly regulated in cells To maintain Cu homeostasis at the cellular level, intracellular Cu content is regulated by a complex network of Cu-dependent proteins, including cuproenzymes, Cu chaperones, and membrane transporters