ghk-cu uses and benefits “Is actually worth it?” is genuinely one of the most common questions in my comments, so let me finally answer it properly., The short version: copper peptides have real research behind them, GHK-Cu Dosage: A Doctor's Guide

[1] It bears emphasis that no randomized controlled trial in humans has established an optimal BPC-157 dosage

Without any spacing between His residues, or when the spacing was larger than one Gly, the maximum absorption showed red shift, suggesting different Cu(II) binding mode characterized by an increased content of 2N coordination when there are at least two intervening glycine residues

J Clin Invest 2010;120:1774-85

However, we acknowledged that, because CPT code 0625T was only made separately payable as part of the OPPS in October 2022, and, therefore, the CY 2022 claims available only reflected two months of data, we were concerned that we did not have sufficient claims data to justify reassignment to another New Technology APC (66 FR 69902)