prostatitis
"I had chronic prostatitis for years. Took Ciprofloxacin 500 mg twice daily. First few days it worked like magic, all my symptoms almost completely gone. By the end of the first week, symptoms returned somehow. After 2 weeks of treatment, symptoms were all there back again. Completed 45 days (over 6 weeks) of treatment and then stopped it. Don't know exactly why it didn't work. Side effects included some headache, dizziness, anxiety, and lack of sleep."