Hi, I'm wondering when vit b12 is prescribed. I had right hemi colectomy 18mths ago and am on Azathioprine for CD ever since as some inflammation still present after surgery. I take extreme care with diet to keep bowel settled and exercise daily but have really low energy levels. Very frustrating :thumbdown: All my reg bloods are fine so I am not anaemic - wondering should I be looking at vit b12 or are there specific symptoms that would be obvious ? Doc has never mentioned it ...so I just take a multivitamin but nothing else - not helping energy levels though . help ?