Compounded Carnitine (L) Injection Empower Pharmacy L Carnitine Body Contouring Institute BCN Mesotherapy Serum Dermishop Subcutaneous Injection Sites and Instructions for Safe Self Administration Subcutaneous Injection Sites and Instructions for Safe Self Administration How To Give A Subcutaneous Injection And Sites The HCG Institute Intramuscular vs. Subcutaneous Injections: What's the Difference? Intramuscular (IM) shots go deep into the muscle for faster absorption, while subcutaneous (SubQ) injections are placed just under the skin for slower, more sustained