How to self administer subcutaneous B12 injection., 1. Withdraw proper dosage from vial into an insulin syringe, 2. Clean site of injection (abdomen or other proper site), 3. Pinch the skin where you 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 Vitamin B12 Liquid Drops Why Not Natural WhyNotNatural Best Vitamin B12 Injection Sites: Where to Inject B12 PA Relief B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics