B12 Injections Feeling tired, run down, or dealing with brain fog? A B12 shot might be just what you need! Boosts energy Supports metabolism Improves mood 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 Managing B12 Deficiency: My Journey with Self Injections How Quickly Does B12 Shot Work? Does It Help to Lose Weight?