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Lin, B., Li, R., Handley, T., Wade, J.D., Li, W., and OBrien-Simpson, N.M., ACS Infect

Typically, GHK-Cu is prepared in compounding pharmacies under USP sterile guidelines, and physicians prescribe it as a compounded peptide. Clinics emphasize that its use is experimental and off-label

Human clinical trial data remains limited, with Phase I and II trials for inflammatory bowel disease conducted in the 1990s claiming safety with no toxicity, though full peer-reviewed data never appeared in scientific literature

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