So sorry... I know that they ( fluoroquinolones ) can cause some serious problems in young dogs, so perhaps the same is true in people?
Here is an example of how well it can work:
My my first ever sinus infection. Chick weight - 800 grams. Gave 0.16ml of 10% Baytril IM.
Have my first URI in a peachick. Here it is at 9 am:
Four hours later:
Here he is 8 hours later. Note that I have not wiped his face.
28 hours later - still some swelling that is hard to see in pictures and some clear drainage from nostril. Up five grams, which is not enough, but it's better than a loss.
Chick was 100% after just two shots, but gave two more per the recommendation of a vet.
Baytril (enrofloxacin) is an amazing drug.