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 How to Self Administer Subcutaneous & Intramuscular Injections Tirzepatide + L Carnitine IV Me Now FL Subcutaneous Injection Sites and Instructions for Safe Self Administration Subcutaneous Injection: What It Is and How to Give One Subcutaneous Injection Sites and Instructions for Safe Self Administration