ghk-cu best time to take morning or evening Everyone seems be talking about right now… but most people still don't understand what it actually does. GHK-Cu is a naturally occurring copper-binding peptide that has been studied for its GHK-Cu Repairing Serum | Barrier
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The risk appears low and was not dose-dependent

Woods KA, Camacho-Hbner C, Savage MO, Clark AJ
[DOI] [PubMed] [Google Scholar] 30.Sikiric P., Gojkovic S., Krezic I., Smoday I.M., Kalogjera L., Zizek H., Oroz K., Vranes H., Vukovic V., Labidi M., et al

30 ml GHK-Cu Copper peptide serum

The intra-assay coefficient of variability was calculated as 9.7% based on 253 samples tested in triplicate
