Nitrofurantoin
"I've had a UTI for 2 weeks, treated with two other antibiotics, which did not really work. Last night I suddenly developed fever, chills and body aches, 5 days after the last antibiotic dose. I went to the ER and I was given a Nitrofurantoin pill as soon as blood and urine test were completed. By this morning, not only the fever had gone, but for the first time in two weeks I have no pain, and urine test is totally clear. I hope to avoid side effects, as I need to take it for another 6 days. All I can report is mild tiredness, but I have been tired for the past two weeks, so I cannot attribute this to Nitrofurantoin."