I have just had my b12 checked again, im on no supplements or injections, for last 12 months my b12 have been dropping rapidly after injections were stopped. Sept 217 and ive just had one and they have jumped up to 350! Anyone know why they would raise as ive been deficent for last 2 years. I feel awful flu like symptoms, memory problems, bad mood! Stress anxiety and panic attacks. I have absolutely no chance of getting injections now.