A Clinical Trial of Extended (High) Treatment Dose Antibiotics in Combination With Methenamine Hippurate Compared to the Standard of Care (Either Prophylactic (Low) Dose Antibiotic Treatment or Methenamine Hippurate) in Females With Chronic Urinary Tract Infection

Chronic Urinary Tract Infection (UTI) is a type of UTI where symptoms are constant and occur every day, unlike recurrent UTIs, which come and go with symptom-free breaks in between. Current treatment for chronic UTI within the NHS is based on recommended guidelines for recurrent UTI. The standard approach typically includes one of the following treatments: * Long-term, prophylactic (low) dose daily antibiotic (where medication is used at low doses to try to prevent symptoms reoccurring). * Long-term use of a urinary antiseptic (which helps keep your urine bacteria free), called methenamine hippurate. These often do not work for people with chronic UTI, and symptoms can persist. Moreover, standard urine tests may fail to detect infections, making diagnosis and treatment more challenging. The EAT-UP trial will investigate whether longer courses of treatment (higher) dose antibiotics combined with methenamine hippurate (a urinary antiseptic) are a more effective treatment at reducing levels of infection and symptoms than standard of care treatments (as described above).