How to Give a B12 Injection: A Self Administer Guide Is It Okay To Use A B12 Injection With Insulin Syringes? 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 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 Vitamin B12 Injections (Cyanocobalamin Injections) Mountainside Medical