ghk cu 3 GHK-CU 3% COPPER ANTI-AGING PEPTIDE SERUM | Repairing, Collagen Rebuilding Vitalis 3% GHK FirmRestore 3% GHK-Cu Serum |

M., Liedtke M., and Nguyen L

The reasoning is that oral bioavailability is ~4050%, and animal study HED conversions suggest higher doses may be needed for the full effect

It also promotes synthesis of elastin, glycosaminoglycans, and other matrix components that give tissues their characteristic properties

Animal studies showed developmental risks

It can express transcription factors Mac1 and Ctr1, which promote copper absorption, and can also avoid toxic effects caused by excessive copper accumulation through its unique plasma membrane structure and the activation of the copper resistance assay gene CRD1 [41,42,43,44,45]

It is especially important during pregnancy for fetal development and helps prevent neural tube defects