The B12 Shot: What Every Human Needs to Know About Injectable Vitamin B12 B12 Injections vs Pills: Richmond's Complete Guide Could you be low on Vitamin B12? It's more common than you think, and often overlooked. Signs may include: Headaches Lightheadedness Sore tongue Difficulty concentrating Low mood Fatigue Lethargy Vitamin B12 Injections Everything you need to know with Dr Mandy Vitamin B12 Shots in Lilburn Main Extension, GA Vitamin B12 Injections and Weight Loss: How Does it Work?