Levofloxacin
"500 mg/1x a day for 10 days was prescribed for an acute sinus infection. I take Wellbutrin and bupropion for depression and anxiety--they manage my symptoms very well. Two days of the Levaquin had be in an agitated state such as I've not experienced in years   I experienced insomnia--four hours sleep--and I am always blissfully able to sleep 8-9 hrs, falling asleep within minutes of laying down. This drug was poison to my brain. I also have a headache, muscle aches, and redness/rash. I called the Dr for a new drug after 2 doses and asked why in the world would she prescribe me something that has a known history of causing nervous problems?! I may change doctors over this."