pneumonia
"Just finished a 7 day course of Levaquin (500 mg oral tabs) for pneumonia. My infection was not severe, but I noticed effects practically immediately. Within 24 hours I felt so much better. It did make me slightly nauseous at first, until I began taking it only on a full stomach. Did not notice any other side effects. I drank a LOT of water while I was sick, which may have helped."