How and When to Use & Understanding the CPT Code 96372 Approval Issues B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics How to Give B12 Injections at Home to Yourself PA Relief 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 Vitamin B12 Injection Hydroxocobalamin 1mg 1ml ( 5 vials) Skin on You