Paroxetine
"I found this medicine to be extremely helpful.  Initially it made me very tired.  I have been on it over two years.  One side effect for me has been a gain of about 30 pounds since taking it.  I have tried to quit and or skip taking it before.  Don't do it!  I always have nightmares or at least bad dreams if I miss a dose.  Stopping cold-turkey caused horrible light-headedness and dizziness.  Talk to your doctor BEFORE you stop taking it.  It is definitely worth these side effects."