How to Give a B12 Injection: Step By Step Instructions Practice Nursing You know where you can stick that or do you? Where to inject the deltoid and why Practice Nursing Vitamin B12 Injection Dose for Adults: 7 Key Facts on Dosage & Frequency Liv Hospital Vitamin B12 Shots: Uses, Intake Levels, and Safety Figure. Subcutaneous injection into the deltoid area The Australian Immunisation Handbook Deltoid Muscle Injection The deltoid muscle is a common site for intramuscular (IM) injections, especially vaccines! What gauge needle do you use for an IM injection? Answer in the comments! #medicationadministration #IMinjection #