Modafinil
"Was prescribed Provigil in 2005 for MS fatigue,  and Fibromyalgia fatigue and brain fog. Have always used the brand name.  I take 200mg two times a day.  This gives me 8 good hours of function.  Recently switched to Generic.  Cannot even compare to the brand name. Too bad the price is out of this world for such a wonder drug.  It truly is a blessing! But who on earth can afford it!??"