Pregabalin
"My doctor prescribed me Lyrica for some trivially mild ulnar tunnel syndrome.  Within about a week of taking just 75 mg per day (once before bedtime), I developed horrible anxiety, insomnia, muscle tremors and suicidal thoughts.  My vision blurred as well, but it wasn't severe.

It's been eleven days now since I've stopped taking Lyrica, and most of the side-effects have gone.  The anxiety is still there, but it's no longer as bad as it was.

Had I known about any of this, I would have just applied hot packs to my wrist and waited for it to heal by itself.  The side-effects were totally not worth it."