I take Amantadine, no side effects, thought it was doing absolutely nothing, so I stopped and discovered it took me from dead to just 1/2 dead!! Talked my neuro into Provigil and like they give Hyper kids Ritalin (an upper) which works the opposite on Hyper to calm them down, Provigil made me more tired. (so maybe like my PCP said, I am a little Hyper.) On Amantadine for a long time now, doing OK.