My current neuro prescribed Provigil for me the first day he saw me, but later I realized he had already decided I had
MS.
Provigil is used in the
fatigue of
MS, CFS, and Fibro. It is off-label, but has show itself to be quite safe and not have a dependence problem.
Another possiblity is amantadine, but most people like Provigil better.
If your B12 is on the low side, even without being deficient, I recommend the sublingual 1mg supplement of B12 in the "methycobalmin" form.