I was put on Levaquin for a infection in my uteris. The first hour I took it I felt like I had the flu and then as the days passed I was gassy, stomach ache, diarrhea, headache, confusion and started hearing voices. On day 4 I didn't take my meds and called my doctor. I still heard voices the next day and here it is 3 days later I'm still having stomach problems and diarrhea. No voices but the confusion is still lingering. I have never had a problem with any medication. Never a single side affect until Levaquin.