common dose ghk-cu peptide Dosage Chart: Complete Reference Tables for Every Protocol GHK-Cu 50mg Copper Peptide Dosage:
Description
Its at 3,900 meters, with a cold climate and grassland landscapes

But, there are other ways to keep vitamin B12 levels up

doi:10.3389/fphar.2022.879020
This places it in the same category as many research peptides, available through certain channels but without official sanction for human use
