How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust How to Give a B12 Injection: Step By Step Instructions Where to Inject Vitamin B12 Vitamin Injections RevIV Rejuvenation Medical Spa How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust HOW TO SELF INJECT B12 AT HOME with Dr. Tyler Rogers , , If youve been prescribed vitamin B12 shots or exploring at home wellness, this step by step guide will walk you through how to do your own