B12 Injection sites + How to use B12 Shots Safely B12 Injection sites + How to use B12 Shots Safely How to Self Administer Subcutaneous & Intramuscular Injections How to Give a B12 Injection: Step By Step Instructions Hi Dr. Tony here! If you give yourself injectionstestosterone, estrogen, insulin, peptides, or B12these are 3 of my favorite tips to make them almost painless. Tip 1: Insert the needle quickly, then HOW TO SELF INJECT B12 AT HOME with Dr. Tyler Rogers If you've been prescribed vitamin B12 shots or exploring at home wellness, this step by step guide will walk you through how