migraine prevention
"I was on this drug for many years and while in the beginning I felt it helped with both the frequency of headaches and fibromyalgia associated with ME, over time it stopped working.  On the flip side, it definitely had a negative effect on my memory.  I VERY slowly weaned myself off of it and most of my memory has returned. My insurance only paid a small part of the cost and it is very expensive.  I would not use it again.  No upside and plenty of downside."