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Can I use over-the-counter GHK-Cu serums instead of prescription injectable

[DOI] [PubMed] [Google Scholar] 36.Boo S., Dagnino L

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up to 43% in obesity trials) Diarrhea (13-17% in diabetes trials

doi: 10.1016/j.vph.2022.106976 147 LeeMHSandersLKumarRHernandez-SaavedraDYunXFordJAet al