Sir I am 27 year old i am unable to remember things which are very common and mind is not stable .when I try to focus on study then mind is elsewhere. I am unable to learn small or simple things . My vitammin
b12 was 230 and d3 is 21... After this i have taken tablets but small effects was seen but when I lift medicine then situation is same ..on this way i cannot fought simple examination... Pls help what go to do