urinary tract infection
"I get frequent urinary tract infections and was prescribed Bactrim by a doctor at an urgent care center because Macrobid made me pretty nauseous and really tired. It seemed to clear up the infection well but made me extremely sick. I vomited constantly while on Bactrim. I ended up missing four days of school before deciding I couldn't keep taking it and called urgent care for a new prescription. The doctor I talked to when I called said I should never have been prescribed Bactrim because people who don't tolerate Macrobid well usually have even worse side effects while on Bactrim. Since then I have been prescribed Keflex when I get a UTI and have had no side effects at all."