The Benefits of B12 Injections: Boost Energy, Health, and Vitality DripGym B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Lets do my first B12 injection together This is something Ive been nervous about for a long time, but today I finally did itand it honestly wasnt bad at all. I used the Union Medico needle guide