Completed

Phase I/II Randomized, Placebo-Controlled Study of Capsaicin for Interstitial Cystitis and Vulvar Vestibulitis

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What is being tested

capsaicin

+ Placebo

Drug
Who is being recruted

Genital Diseases+14

+ Urinary Bladder Diseases

+ Cystitis

Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Placebo-ControlledPhase 1 & 2
Interventional
Study Start: June 1995
See protocol details

Summary

Principal SponsorNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Last updated: May 4, 2025
Sourced from a government-validated database.Claim as a partner

Study start date: June 1, 1995

Actual date on which the first participant was enrolled.

PROTOCOL OUTLINE: This is a randomized study. Patients with interstitial cystitis are randomly assigned to 1 of 3 pain control therapies. The first group is treated with capsaicin. A second group is given individually titrated doses of capsaicin: the dose is increased as tolerated or until symptomatic response is acceptable. A control group receives a placebo. Therapy for all groups is administered intravesically every week for 5 weeks. Patients with vulvar vestibulitis are randomly assigned to 1 of 2 pain control therapies. One group applies topical capsaicin cream to the painful area 4 times a day for 6 weeks. The dose is individually titrated if burning discomfort persists and the patient is compliant with the application schedule. The control group applies a placebo. Patients with vulvar vestibulitis may continue or cross to capsaicin for 6 additional weeks.

NCT00004316
Principal SponsorNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Last updated: May 4, 2025
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

139 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Female

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Genital DiseasesUrinary Bladder DiseasesCystitisFemale Urogenital Diseases and Pregnancy ComplicationsGenital Diseases, FemalePathologic ProcessesPathological Conditions, Signs and SymptomsUrologic DiseasesVulvitisDisease AttributesFemale Urogenital DiseasesMale Urogenital DiseasesUrogenital DiseasesVulvar DiseasesCystitis, InterstitialRare DiseasesVulvar Vestibulitis

Criteria

PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Women with interstitial cystitis by National Institute of Diabetes and Digestive and Kidney Diseases criteria Vulvar vestibulitis by International Society for the Study of Vulvar Disease, i.e.: Severe pain on touch or attempted entry of vagina Tenderness to pressure within the vulvar vestibule Vulvar erythema Duration of symptoms at least 6 months Absence of vulvovaginal infection, i.e.: No fungus No trichomonas No chlamydia No gonorrhea No "clue cells" in vaginal discharge

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Experimental

Group II

Placebo

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

University of Pittspurgh

Pittsburgh, United StatesOpen University of Pittspurgh in Google Maps
CompletedOne Study Center