Azo Standard is awesome! I have used it, as needed, down through the years. For me it has worked wonders when a UTI came on in the middle of the night and I couldn't get in to see a doctor right away to get an antibiotic. It relieved the terrible burning pain until I could get in for treatment. I keep some on hand and take it with me when I go out-of-town just in case it's needed. In my opinion, it is definitely worth a try! I don't want to be without it.