Found out I had low b12. (150). Said this wasn't low but borderline.
Doctor gave me one jab of b12 and I felt brilliant for two weeks. Now I'm back to the awful dragging tiredness. He told me the jab should see me good for 6-9 months but I've read when you start having injections you should have a loading dose?
Back there in a couple of weeks. What should I ask him?