PEPTIDE SCIENCES GHK CU GHK Cu Tripeptide 5 mg 60 Sublingual Tablets SuperSmart A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B Peptide GHK CU Cream Concierge MD GHK Cu Topical Spray Wells Pharmacy Network