question: I have had two urine cultures done in the last 3 weeks. The first one indicated that I showed 10,000 - 25,000 cfu per ml. Dr. prescribed cipro 500mg, but test said it also appears susceptible to levofloxacin, nitrofurantoin, penicillin and vancomycin. I have no symptoms but am quite nervous about taking any of these, and regarding cipro - especially because of the side affects in joints - I have an elevated ra factor. (plus vit d and b12 deficiency) I had a second culture done and while I don t know the results, Dr s nurse said to fill cipro and it s not a big deal. I ve been told in the past that I have metro valve prolapse and to take antibiotics before dental work and was told I didn t need to any more. 4 questions