ghk-cu tolerance desensitization downregulation effectiveness loss over time Tripeptide–copper complex GHK‐Cu (II) transiently improved healing outcome in a rat model of ACL reconstruction - Fu - 2015 - Journal of Orthopaedic Research GHK-Cu Peptide: Clinical Evidence &
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Bristol Myers Squibb

An unpaired t test was used for intergroup comparisons between the NUA and HUA

I dont believe for one moment that whats going on here is an honest investigation of whether these products should be compounded. Scott Brunner of the Alliance for Pharmacy Compounding said the coming meeting will be the start of a protracted process. Even if the panel votes to make the peptides available, and FDA agrees, the agency will still have to draft and publish rules on the change, he noted

You will not know it has lost potency until your results stop
