I was on Amantadine for a few years. One at breakfast, second at lunch. It did work very well for me, just made me less fatigued. Now I am on Provigil, 100 mg at breakfast, another at lunch. It works much better. Insurance does not like to pay for the Provigil, that is why your Doctor started you on the Amantadine. If it isn't enough it is much easier to get the Provigil approved.