18.5 Administering Subcutaneous Medications Nursing Skills Marla BSN, RN Do you get injection site reactions from your GHK CU? 3 tips to make it better Room temp Use a different injection site Inject Instagram Retatrutide Alignpeptides GHK Cu Injection Pen Australia Subcutaneous Copper Peptide Inject+ For subcutaneous injections, using shorter needles (4 5mm) is the safest choice to ensure medication stays in the fatty layer and avoids muscle injury. A 4mm needle is ideal, minimizing pain while keeping