Side Effects & Safety Profile GHK-Cu has one of the most favorable safety profiles in the peptide research literature, which is partly attributable to its endogenous nature it is a molecule the body already produces and recognizes
The trials yielded mixed results and provided only partial validation for a neurotrophic- based PD treatment, while underscoring multiple issues raised by this type of therapy, including toxicity, inconsistent effectiveness, and the likely need to deliver drug to both the cell body area and terminal fields
doi: 10.1146/annurev.bi.49.070180.003113 89 KrowarschDCierpickiTJelenFOtlewskiJ
Some users report a subjective "cognitive flatness" when stopping after extended use, but this typically resolves within days
However, asynchrony between oocytes and spermatozoa, especially when aged oocytes are fertilized, will affect the rates of fertilization and embryo development, thus reliable methods are needed to control oocyte aging to benefit modern ART [28]