I've been receiving PMs on this, too....I'm amazed the stories on this! I used to have lots of trouble with it years ago...but haven't had one for 20+ years. I'm taking the meds as directed -- TRYING to drink lots of fluids....and will follow up with doctor. After 2 days of meds....I find the back pain is gone!!!!! Go figure -- Thousands of dollars for doctors, physical therapy and it's a UTI!!!!