I have been treated with antibiotic for three years off and on for sinus infections, mrsa, achromobacter and pseudomonas. The drugs I have been on is cipro, bactrium DS,levaquin and doxycycline, most cycle has been thirty days at a time. I have had sinus surgery one year ago.My problem now is I have a creatinine of 1.25 and Iam now on cipro 500mg bid. I have also been on steroids at frequent intervals. Pseudomonas was the last culture I had so Iam on cipro. Will that damage my kidney further. I know I need the antibiotic but Iam very fearful.