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2007 reported that GHK-Cu stimulated dermal papilla cell proliferation by up to 70% in vitro and was associated with an extended anagen phase in their model

It supports red blood cell formation, and it also improves oxygen delivery

Dihexas unique chemical structure helps it penetrate deeply into the central nervous system, potentially making it a candidate for addressing cognitive decline

References BPC157 tendon healing study BPC157 gut permeability BPC157 nerve regeneration NFB modulation review 2024 WADA Monitoring Program

Ultimately, in this case, I err on the side of some type of ban for both athletes