I'd had a bad experience with Avalox so when my OB wanted me to take Levaquin for a possible infection I called to ask whether this was a good idea since they are from the same drug family. She told me to do it and against my better judgment I complied. Side effects: dizziness, feeling drowsy/drunk, nausea, insomnia, vivid nightmarish dreams, and most alarmingly, a burning sensation (on my skin and in my joints) at the top of my spine/base of my skull that started around the 3rd day of taking it. That's when I checked the internet for others' experiences, freaked out, and told my OB that I was simply not going to take another dose. Please RESEARCH this drug and any possible alternatives before taking it!