Last week I called my doctor about my never-ending cold. I had a sore throat for what seemed forever, and evidence of a sinus infection. Like a lot of people, I just thought if I waited long enough, it would go away. It didn’t. I got a prescription for Levaquin (500 mg) for 5 days. I have one more day to go. I have to say the stuff works! It’s not without its own set of side effects though. Who can tell what cause what when you’re on a bunch of different drugs though? Anyway, learn from my mistake (even though I never do). If you get a cold and it doesn’t seem to want to go away, call your doctor!