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Actively Recruiting

Phase 2
Age: 18Years +
FEMALE
ID07202949

Extended Antibiotic Treatment Combined With Methenamine Hippurate Compared to Standard Care in Females With Chronic Urinary Tract Infection

Led by University College, London · Updated on 2026-04-23

192

Participants Needed

5

Research Sites

4 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

This research aims to evaluate treatments for chronic urinary tract infection UTI in females, a condition where symptoms occur every day without symptom-free breaks. Current treatments often involve low-dose antibiotics or methenamine hippurate but may not fully resolve symptoms. The trial investigates whether longer courses of higher-dose antibiotics combined with methenamine hippurate are more effective than standard care in reducing infection and symptoms. Participants will be randomly assigned to one of two groups. One group receives a higher-dose antibiotic cefalexin, nitrofurantoin, or trimethoprim combined with methenamine hippurate taken twice daily for 12 weeks. The other group receives a low-dose prophylactic antibiotic amoxicillin, cefalexin, nitrofurantoin, or trimethoprim or methenamine hippurate alone, also for 12 weeks. Treatments are selected by clinicians based on individual medical needs. During the 12-week treatment, participants visit the clinic every 4 weeks for assessments. They complete questionnaires and provide blood, urine, and perineal swab samples. Researchers measure changes in urinary white blood cell counts, symptom scores, quality of life, medication satisfaction, treatment adherence, urine cultures, and safety markers like vital signs and blood tests over the course of the study.

CONDITIONS

Brief Title

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

Who Can Participate

Age: 18Years +
FEMALE

Eligibility Criteria

Eligible

You may qualify if you...

  • Female patients assigned female at birth with a female urinary tract
  • Aged 18 years or older
  • Diagnosed with chronic urinary tract infection showing daily symptoms for at least 3 months
  • Urine microscopy showing 20 or more white blood cells per microliter at screening
  • Estimated glomerular filtration rate (eGFR) of 45 ml/min/1.73m2 or higher
  • Able and willing to attend trial visits and comply with procedures for the trial duration
  • Able and willing to provide informed consent prior to study assessments and procedures
Not Eligible

You will not qualify if you...

  • Unable to take cefalexin, nitrofurantoin, or trimethoprim due to medical contraindications or allergies
  • Unable to take methenamine hippurate due to medical contraindications
  • Currently using immune-modulating drugs for chronic illnesses or cancer
  • Currently using Sodium-Glucose Transport Protein 2 (SGLT2) inhibitors
  • Diagnosed with bladder cancer
  • Active or recent sexually transmitted infection within 3 months
  • Previous use of treatment dose antibiotics for more than 14 consecutive days in the last 3 months
  • Pregnant, breastfeeding, or planning pregnancy during the trial
  • Women of childbearing potential unable or unwilling to use acceptable contraception during the trial and for 1 week after
  • Currently participating in another clinical trial or participated within 6 months
  • Any medical condition or previous treatment judged to affect ability to participate
  • Use of SGLT2 inhibitors within 24 hours before screening visits not allowed

Research Team

E

EAT-UP Trial Team

L

Liz Deane

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