B12 Shots for Energy: Do They Work, Who Needs Them & What to Expect Greenwich Medical Spa B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics B12 Injection Frequency: How Often Should You Get a B12 Shot? Liv Hospital 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 Best Vitamin B12 Injections Dosage And Frequency PA Relief B12 IV Drip San Jose Rev(IV)al Hydration 100% Home IV Therapy