I have found that AZO really helps me with any UTI in between when I feel like I have one and the doctor agrees. It appears that they are giving away free samples on their website. I found them when my doctor said it would be a good idea to take it while on the anti-biotics as it helps with the pain for the first one I ever had. I've had two since then and start with the AZO right away every time. I believe my doctor mentioned something about using it for maintenance, but since I've had three in 12 years, I figured I was good.