Using nettle and cranberry capsules to prevent urinary tract infections

Clinical Trial of Nettle and Cranberry Capsules for Prevention of Urinary Tract Infection

Not applicable Interventional Chung Shan Medical University · NCT05880602

This study is testing if taking nettle and cranberry capsules can help people aged 30 to 75 prevent repeated urinary tract infections.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages30 Years to 75 Years
SexAll
SponsorChung Shan Medical University Academic / other
Locations1 site (Taichung)
Trial IDNCT05880602 on ClinicalTrials.gov

What this trial studies

This study investigates the effectiveness of a nettle and cranberry complex capsule in preventing recurrent urinary tract infections (rUTI) in participants aged 30 to 75 with a confirmed diagnosis of UTI. Participants will be randomly assigned to receive either the active capsules or a placebo, taking two capsules twice daily for eight weeks. Assessments will be conducted at baseline, 4 weeks, and 8 weeks to evaluate various urinary symptoms and overall bladder health. The study aims to determine if this natural supplement can reduce the frequency of rUTI episodes.

Who should consider this trial

Good fit: Ideal candidates are women aged 30 to 75 who have experienced at least two UTIs in the past six months or three in the past year.

Not a fit: Patients with diabetes, pregnancy, or certain urogenital conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a natural preventive option for patients suffering from recurrent urinary tract infections.

How similar studies have performed: While the use of cranberry for UTI prevention has been studied, the specific combination with nettle in this context is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* aged between 30 and 75 years
* at least two episodes in 6 months, or at least three episodes of a UTI in 12 months.

Exclusion Criteria:

* pregnancy women
* diabetes
* History of anatomical urogenital anomalies, urogenital tract surgery
* History of acute or chronic renal failure, nephrolithiasis
* History of intestinal diseases causing malabsorption
* Anticoagulant medication in the last month
* immunocompromise
* Known allergy or intolerance to cranberry

Where this trial is running

Taichung

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Urinary Tract InfectionNettleCranberryPreventionRecurrent InfectionInflammation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.