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 Give Yourself an Intramuscular Injection How to Give a B12 Injection: Step By Step Instructions What Happens If You Inject B12 Wrong: 6 Red Flags Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg