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Many commercial sites claim GHK-Cu "inhibits 5-alpha reductase" and "reduces DHT," but the primary literature does not support that framing as a mechanism of action for the peptide itself

GHK-Cu stimulates unlimited collagen production What evidence supports: Increased collagen synthesis in dermal fibroblast and wound models

A 2018 study published in PLOS ONE demonstrated that BPC-157 significantly accelerated Achilles tendon healing in rodent models, with 65% improvement in tensile strength at the 4-week timepoint compared to controls

This suggests that DSIP does not activate all mitochondrial respiration but specifically enhances ATP synthesis [2]

I also notice that beginners often value manufacturers who provide guidance during the development process