B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics How To Give a Subcutaneous (SubQ or SQ) Injection OncoLink Subcutaneous Injection: What It Is and How to Give One Best Vitamin B12 Injection Sites: Where to Inject B12 PA Relief B 12 (Methylcobalamin) Therapy MedClub by Dr Jenn 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