Lots of sinus infections, flu, etc going around right now. I got very sick and went to urgent care, they diagnosed me with acute sinus infection. put me on ammoxicilin. After 6 days had to go back and they told me that I also had developed broncitis. Dr put me on levofloxacin500mg. After reading side effects and what can happen to tendons, nerve conditions, etc. I was afraid to take it. The risks are great. IS THIS A GOOD MEDICINE AND WHY DOES THIS MEDICINE HAVE BAD AND SERIOUS SIDE EFFECTS.