Azo-Cranberry - how long does it take for cranberry AZO to clean urinary tract effectively?

Azo-Cranberry is supposed to "prevent" UTIs. It will not cure a UTI. If your intent is to avoid having UTIs by using a supplement, try ellura. It is the only one that meets the standards of a helth calim. The only issued health claim is through AFSSA (the French version of the FDA). You can learn about ellura on their website. www.myellura.com