Not all shots are the same here's a guide Injections are a fast, effective way to deliver medications, nutrients, and vaccines directly into the bodybut not all injections are the Vitamin B12 Injection Side Effects and Safety Benefits of a Vitamin B12 injection Southdowns Pharmacy Group Benefits of B12 Injections for Optimal Health 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