u/Cultural-Weird-1943

I've had b12 deficiency for around a year. Initially I was given oral supplements and after a few months I was up and running. After 2-3 months I started having this irregular body pain, which was feverish but the temperature was alright, and along with this brain fog was also there. Now it has been around 9 months, this feverish pain comes and goes and it has been frequent. I got tested for b12 deficiency for around 5 times and max it was 280 pg/dl. The doctors are just recommending me meganeuron od+ sort of tablets, basically they're asking me to take methylcobalamin 1500 mcg. There has not been much improvement. The biggest frustration is that it affects my work and studies.

What shall I do in this situation?