ghk-cu copper peptide topical purchase Neurogan Health, Peptide, Face Cream Cu in a 2oz jar GHK-Cu Copper Peptide | Collagen
Description
Stomach acid and pepsin are required to free food-bound B12, which then binds to salivary R-proteins

It is not intended for human or veterinary administration

Zheng et al., 2019)

This acidic formulation, combined with the acylation modification that extends its half-life, likely contributes to local tissue irritation
