Subcutaneous (SC) and Intramuscular (IM) Injections Must Knows for Subcutaneous administration: Pinch skin with non dominant hand and hold syringe with dominant hand Always inject: 2 inches away from umbilicus (for abdomen) 3 inches How to Give a B12 Injection: Step By Step Instructions How to Give Yourself a Shot (SubQ) Olympia Pharmaceuticals Instruction Guide for Intramuscular (IM) Self injection of B12 Methylcobalamin 1mg 5mg B12 vitamin Store Intramuscular vs Subcutaneous Injections for vitamin B12 supplements.