Levaquin Side Effects: I have been on 500mg Levaquin for approximately 10 days, and thou http://www.medications.com/effect/view/33940 I have been on 500mg Levaquin for approximately 10 days, and thought I was doing fine. I did notice that I felt a bit hyper, but not enough to bother me. Then, last night, I simply could not sleep. I have had insomnia at times in the past, and I have fou send in a medwatch report please by going to www.fda.gov Fri, 29 Aug 2008 21:11:55 -0400 http://www.medications.com/effect/view/33940?item=11759 send in a medwatch report please by going to www.fda.gov http://www.medications.com/effect/view/33940?item=11759