B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide Subcutaneous injecting WithYou Subcutaneous injection technique HOW TO GIVE A SUBCUTANEOUS INJECTION Make sure the skin clean, dry, and without wounds Injection sites Position the syringe dominant hand Gather mound of skin between hngers Insert Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg