Penetration of fleroxacin into maxillary sinus mucosa and palatine tonsil.

Ten patients undergoing tonsillectomy or operation on the maxillary-antrum were given 200 mg fleroxacin orally 1-2 h before surgery. The concentration of fleroxacin in maxillary sinus mucosa (mean 2.61 mg/kg) was similar to that in serum samples collected simultaneously (mean 2.46 mg/l); and similar results were obtained with tonsillar tissue (mean 3.27 mg/kg; simultaneous serum samples, mean 2.84 mg/l).