Elaine
My daughter too has suffered from Cystitis symptoms and found a bit of relief from taking Magnesium Oxide Supplements (2-420 mg./day) and the pain subsided from this $3.95 cure. I hope it works for you!!It is available at any health store. I found the supplements in a grocery store pharmacy that carried natural supplements. She was on every antibiotic known to man and this is the only thing that gave her relief. I hope you try it because you don't have anything to lose, except the pain. Good luck!