Common IM Injection Sites Deltoid (Upper Arm) Location: About 23 finger widths below the acromion process (shoulder bone). Best for: Vaccines and small volume injections (1 mL). Notes: Easy to access but limited Vitamin B12 Injections Cobalife VB12 Injection for Sheep and Cattle Elanco B12 SELF INJECTION GUIDE IM SELF INJECTION HOW DO I SELF INJECT? HOW TO SELF INJECT B12 Dr Ayanna Knight Cosmetic Skin Care, Health & Wellbeing Botox Brighton