GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection Ghkcu Peptide Shot TikTok No, were not actually injecting copper , GHK Cu is a peptide your body already makes (just less of it as you age). It binds to copper and helps signal repair., Why people are into it:, supports GHK Copper Peptide GHK Cu Tripeptide 1