Gabapentin
"Gabapentin is the best medication I have ever taken. I was put on Gabapentin because I've had unexplained upper back pain for two years. It's accompanied with a really annoying tingling sensation under my shoulder blades. I was prescribed 300mg three times a day. By day two the pain was 80% better. Day three it was gone.

It was a life saver. I've never been happier. And then I had a weird day after a week on it. I have mild depression and anxiety but I've never had a suicidal thought in my life. There was this sensation that I've never felt before. I called into work. I couldn't move and kept having the thought of downing my pain meds with my bottle of whiskey.

I immediately cut out the gabapentin and that feeling disappeared."