Levofloxacin, ciprofloxacin, nitrofurantoin and fosfomycin are some of the antibiotics used to treat urinary tract infections, reports WebMD. The symptoms of a UTI usually improve within one to two days of starting antibiotic treatment.
Treatment with antibiotics helps prevent kidney damage and other complications of UTIs, states WebMD. Antibiotics are also used to prevent UTIs in pregnant women, people with spinal cord injuries and people who are prone to bladder infections. Anyone who is prescribed an antibiotic to treat a UTI should take the drug as prescribed. Some antacids can interact with antibiotics, so levofloxacin and ciprofloxacin should not be taken at meals. If symptoms do not improve after three days, seek advice from a physician.