I took avelox one time, about an hour after I took it I felt like I was having a horrible asthma attack, I couldn't breathe, I tried my inhaler but it was no help. Then I became so incredibly hot and started having these horrible stomach pains. I had to lay down on the bathroom floor they were so bad. I called my mom who rushed over to take me to the Emergency room which is a good thing because by the time we got there I was covered in hives and could not breath and this all started about an hour to an hour and a half after taking avelox.. This stuff is toxic and should be removed from the market immediately if not sooner.