My B-12 levels were below 100 and I did one week of B12 injections. On my last day of the loading dose, I had an appt with my hematologist and he did a bunch of blood work. I just got my test results and my b12 was 6971. I had a weird reaction to the injections in that I was exhausted the whole week and felt terrible... Is it normal to have such high levels? Somehow I thought it would take a lot more to even out my levels. And with all that B12 I would think I'd have energy? Any other experiences?