B12 Injection sites + How to use B12 Shots Safely B12 vitamin Store How to Give an Intramuscular Injection of Vitamin B12 Common sites for intramuscular injections How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Taylor demonstrates the proper technique for administering an intramuscular injection. Locate the upper, outer quadrant of the buttock muscle Prepare the site with alcohol Insert needle all the Sacroiliac Joint Injections for Low Back And Buttock Pain