GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B How long will a 50 mg supply of GHKCu last when dosing 2 mg daily for five consecutive days followed by two days off each week? Ghk Cu Dosage For Collagen Production Everything you need to know about GHK Cu WHAT IS IT? A copper peptide your body naturally produces but production drops by 60% by age 60. It's one of the most