Lavendar as Bumpkin rightly mentioned, daily taking of D-Mannose is my go to for avoiding UTI and Cystitis, along with a change in diet. Some people might equate the D-Mannose with cranberry tablets but it breaks down differently in your system (and worth noting, the sugar in cranberry juice should be avoided). I suffered consistently for 3 years straight, having a few kidney infections along the way, constantly on antibiotics and even had a GP tell me she wanted to put me on daily antibiotic course to keep from getting any more. Eventually I was so fed up I saw a physiotherapist who specialised in pelvic conditions and a nutritionist, and ultimately changed my diet to cut down on coffee, alcohol, acidic and inflammatory foods and sugar, and drank more water daily. Gluten intolerance and eating badly were basically causing general inflammation in my bowel which was having a knock on effect on my bladder. I now take the D-Mannose only when I feel run down or like one might be coming on, and I haven't had an infection in 5 years! Good luck I hope things improve soon for you