Hi, dear I have gone through your question. I can understand your concern. You have urinary tract infection with e coli. You need a course of antibiotic. You should go for sensitivity testing. It will give you exact idea that which drug is most effective against your E coli infection then you should plan antibiotic accordingly. Drugs like levofloxacin, norfloxacin, cephalosporines are commonly used in UTI. But these all are prescription based medicine so consult your doctor and take treatment accordingly. Also check your blood sugar level once. because diabetes is the most common cause of recurrent urinary tract infection. Drink plenty of water. Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you a very good health.