cystitis

I have been diagnosed with cystitis for over a year. Antibiotics didn't work on my condition. Can it be cured by natural medicine? What medicine is efficient?

Hello in the last Jun 2009 I got a UTI, then I took around 6 courses of intibiotics, My urine cultures came Negative but symptoms still there My symptoms 1- Burning during urination 2- Frequency ( 7- 11 times ) per day ( not at night ) 3-Urgency 4- my bladder can not hold more than 100...