What are the negative side effects of GHK-Cu?

For this product, there’s no human safety data to report. It’s sold as a lyophilized research compound and isn’t for human or veterinary use. The human studies of GHK-Cu that do exist tested finished topical cosmetic formulas applied to skin, and their findings don’t describe this powder or any other route.

The documented risks sit in the lab. Strong reducing agents such as ascorbic acid, and chelators such as EDTA, can strip copper from the peptide and break up the complex, so record exactly what goes into a stock solution. Impurities in poorly made product are another open question, which is why lot testing matters. Our lab testing page covers the endotoxin, heavy metal and sterility screens. Buy GHK Cu peptide online with a batch-matched COA.