narcolepsy
"Really good medicine for me. I don't sleep any during the day, and my drive to do what needs to be done has more than doubled. I take 250mg 1 x time a day. The only side effect was dry mouth for me. My doctor also gave me 1mg of Xanax to take at the end of the day. It helps me with anxiety and helps me get a great nights rest. Both the medications work well together for me."