Vitamin B12 shots: Uses, benefits, and side effects B12 Shots & B12 Injections: The Good, Bad and Alternative! 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 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