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Flushing: The copper component of GHK-Cu occasionally causes temporary skin flushing
Specifically, this effect is mediated through an increase in butyrate-producing bacteria (such as FP , Roseburia , Butyricicoccus porcorum , and Gemmiger formicilis ) and a decrease in conditionally pathogenic bacteria (including Akkermansia and Parasutterella excrementihominis )
[DOI] [PMC free article] [PubMed] [Google Scholar] 44.Zemba Cilic A., Zemba M., Cilic M., Strbe S., Ilic S., Vukojevic J., Zoricic Z., Filipcic I., Kokot A., Smoday I.M., et al
Retrieved from Lacombe, V., Chabrun, F., Lacout, C., Ghali, A., Capitain, O., Patsouris, A., et al