Jinx,

I had bad headaches and brain fog, but B vitamins have helped. I know you're trying them, but I found that small doses of B6 (30 mgs), Folic Acid (200 mgs) and B12 (can't remember the dose) have really, really helped.

They're the only things that have helped me since I fell ill. Or at least, nothing else was working until I started taking them. the change was dramatic and pretty quick.