After the 7 day prescribed dosage Moxifloxacin, how long does this drug stay in your system?When will Moxifloxain leave my system. I finished my prescription and I am feeling worse now that I have all of the 7 days. I am lightheaded and somewhat dizzy. Getting itching on areas of my body, almost headachy. I have been using my oxygen because it is severley humid. Any help?