Reality check GHK Cu shows interesting and coherent biology on paper
A: Tissue repair and regeneration particularly tendons, ligaments, and the GI tract
This process involves extensive animal testing followed by multiple phases of human clinical trials to establish both safety and efficacy
The 2025 IV pilot measured cardiac, hepatic, renal, thyroid, and glucose biomarkers and reported no abnormalities (Lee et al., 2025), which gives a sense of what those investigators considered worth checking

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