What Happens If You Inject B12 Wrong: 6 Red Flags 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 Subcutaneous Injection: What It Is and How to Give One How to Use These 4 IM Injection Spots Safely Ivy Grove Surgery : Self administration of B12 injection B12 vitamin Store A Manual for you all: What are B12 injections? Where to give B12 injections shots? How to give B12 injections?