B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics A little insight to the importance of the b12 injections. My client hadn't been feeling well & had some bloods done with her GP. The results identified a severe deficiency in b12. B12 Injection Dosage and Frequency: 7 Essential Guidelines for Adults Liv Hospital 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 INJECTION Elite IV Infusion