Sometimes, though controversial, some Dr's can prescribe you a mild stimulant like Ritalin. In other tougher cases may RX you Amphetamines, like Adderral or Dexedrine.
But sweet heart, you certainly don't want to get yourself into that stimulant game. It's way too addicting.
I've been down that path for 10 years and it was hell to get me out of it.