GHK Cu Copper Peptide Benefits, Uses & Safety Intra V 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 GHK Cu Focal Point Vitality Why is the injection site painful after administering GHK Cu (Glycyl L Histidyl L Lysine Copper) 2mg mixed with normal saline? What is a GHK CU Injection? Benefits and Uses Prime IV