Best Vitamin B12 Injection Site: Administering B12 Shots B12 vitamin Store How to Perform a Subcutaneous Injection of Vitamin B12 How to Give a B12 Injection: Step By Step Instructions How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust B12 Injection sites + How to use B12 Shots Safely Learn how to administer your own SubQ (subcutaneous) injections at home with confidence. Our step by step guide covers everything you need to know, from preparing your supplies to safely injecting the medication. Our