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No GHK-Cu injectable is approved as a drug by the US FDA, the European Medicines Agency, or the Philippine FDA

The clinical research currently consists of the following: Small 1980s pilot trials No large modern RCTs Limited pharmacokinetic clarity No validated subcutaneous dosing protocol for improved sleep DSIP likely works for many individuals, but its critical to acknowledge the doses used by the biohacking community comes from extrapolation

The ingredient, dose, concentration, infusion rate, tolerance, number of substances, and clinical setting affect duration

The products were obtained by silica gel column chromatography

doi:10.3390/ph13090247