I ve had recurring UTIs, and just came off of Cipro. I plan to give a urine sample 5 days from now to my urologist office. I n the meantime, CVS called me saying I had a prescription for Methenamine HIPP which I got. Is this something I take on an as needed basis. Three times before I took antibiotics and the UTI reappeared about 5 days later. I had a CAT scan done, and the nurse told me everything was fine. I questioned the HIPP prescription and asked her to have the doctor call me. So far he has not replied and I m not sure what to do. This is the first time I m going to him. Personally I don t think he s getting the message to call me. Can you help with my question? Thank you.