I was suffering from an anxiety disorder the doc gave me methylcobalamin 1500 mcg once a day for 25 days due to which I am not able to concentrate on my studies like I used to and theres hurdles in my day to day tasks. What best thing can be done as when I am concentrating I am feeling strongness in my forehead and not able to focus properly and learn properly I do not know why he gave me such but its like over strongness and along with methylcobalamin he also gave me benfotiamine-150mg, alpha lipoic acid-100mg, chromium picolinate-200mcg & inositol-150mg I asked him this is causing much problems in my day to day tasks but he said this med is for strongness of nerves but is it given to younger children who are studying my ques is this. please suggest what best can be done to gain that confidence and concentration fast for my exams.