B12 vitamin Store How to Give an Intramuscular Injection of Vitamin B12 How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Injection Techniques Step by Step Guide 1. Intramuscular Injection (IM) 90 Angle Needle Position: Perpendicular to the skin (90 angle) Target Site: Muscle layer Common Sites: Deltoid, Vastus Lateralis, What Conditions Do B12 Injections Help Treat in Shoreline, WA? Is intramuscular (IM) administration of vitamin B12 injections preferred over subcutaneous (SC) administration? Precision is everything when it comes to injections! Did you know that the angle of the needle completely changes where the medication goes? From reaching the muscle to just under the