Pneumonia
"I&#039;ve been given this medicine twice - once for serious bronchitis/pneumonia that nearly required hospitialization. Since I am a well trained athlete, hospitalization for a lung infection was serious.  Doctors tried several other drugs before the Levaquin, but Levaquin was best.  Now dealing with a relatively minor bronchitis and have it again.  I&#039;ve never had any of the side effects others listed - bear in mind that weakness and headaches and many other symptoms might just be the progression of the disease and not due to the drug. It&#039;s hard to tell since each bout is different but compared to many other drugs, this is statistically a very good bet.  If you have bronchitis or a respiratory infection, take your medicines with lots of fluids."