Pain
"My neurosurgeon prescribed Lyrica after a lumbar fusion at L5-S1 to control pain. It worked great and allowed me to sleep when no other medication helped. I started at a higher dose and then as I felt better and better I only took it at night.  After about 4 months, I was ready to go back to work.  I found myself unmotivated and disinterested.  When I spoke to my GP about this, he made the connection between Lyrica and my general malaise, noting that it is also used for anxiety, which I did not have. After that, we worked to wean the dosage down and I stopped taking it after a few weeks. 

My side effects included long time to wake up, general uncoordination upon waking, and some bouts of blurred vision.  I did not experience weight gain."