After being given Levaquin last year, I developed severe insomnia. After the 2nd day of no sleep, I flushed the rest of the pills down the toilet. I was unable to sleep until I finally got some sleeping pills from my doctor at week later. The insomnia lasted almost a month. It was unlike anything I have experienced before. Regardless of how exhausted I was, I felt like I could not fall into sleep, I would just float on the surface but could not go under. I was afraid I was going crazy from sleep deprivation and that I would never sleep again. It was a true nightmare. Fortunately, the insomnia did finally go away but I have placed a note in my medical files to never prescribe Levaquin to me again.