US$ 21.18
ghk-cu injectable side effects copper toxicity All About Peptide GHK-Cu Copper Peptide Supplement, Anti-Aging
Description
Dose: 2mg twice daily (4mg total) Frequency: Morning and evening Duration: 4-6 weeks maximum Rest period: Equal to cycle length Splitting doses maintains more stable plasma levels throughout the day

Jan 1992;55(1 Suppl):314s-317s
Efficacy Assessment Subcommittee of the American College of Physicians

Of course that is far to obvious answer
