Hi everyone just wanting to ask anyone that is in the same boat as me , I had a blood test and the result came out with needing b12 I had one injection got to have another one as my was 150 . Did anyone found that once you had that injection did you feel really down . I need to have another one then in 3 months time . I felt good after the two days but now I am starting to feel down again. Any advice.plus they changed my medication to gabepentin.