My wife just had a cat scan of her sinus area. The diagnosis was a sinus infection and was prescribed LEVAQUIN 500mg tablets, one a day for ten days. Other than her constant long term coughing particularly at night (6 months or so) she does not have any other noticeable symptoms. No pain, drainage, headaches, etc. It seems as though LEVAQIUN is a very pervasive and dangerous drug and any comments such as further tests etc. that you could suggest would be helpful. She is currently under the care of a GP with no particular expertise in this area. Thank you for consideration of this problem.