A B-50 complex would be a good start. I take a B-100 complex plus add some more B-12 (200 MCG) and B-6 (200 MGS). the folic acid should be in the B-50. It is difficult to get enough B's in your diet, especially when the injured brain needs much more. I take a 2500 IU of D3. Unless you are a sun worshiping nudist, it is hard to get enough D from sun exposure.

I can tell the difference when I am not on my vitamin regimen. My wife can too. She will ask, "Have you been taking your vitamins?" It changes how I respond to stress, etc.