Hi there, BIAXIN 500 mg is Clarithromycin, which is a macrolide antibiotic. Though it acts against gram
negative bacteria more strongly, it is not advised in urinary tract infections since its major side effect is
renal failure. You can grade cipro higher than clarithromycin for urinary tract infection. Now days, as you
know TRIMETHOPRIM for seven days, taken during night is the best treatment being followed. Hope my advise is
helpful to you. Take care.