Your body needs vitamin B12 to keep blood cells healthy and to make your nerves work right. Here are some signs that you're low on this vitamin: https: wb.md 3zgZPuM 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 And Tinnitus: Separating Fact From Fiction Benefits of B12 Injections for Optimal Health