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Clinical Trial Summary

OBJECTIVES: I. Estimate the optimal safe dose of intravesical capsaicin in patients with interstitial cystitis.

II. Evaluate the efficacy of 0.025% topical capsaicin in relieving chronic burning pain in patients with vulvar vestibulitis.

III. Evaluate the effect of capsaicin on type C nerve fibers in bladder mucosa and vulvar skin.

IV. Evaluate the effect of C fiber depletion on urinary levels of histamine and prostaglandin.


Clinical Trial Description

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. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00004316
Study type Interventional
Source Office of Rare Diseases (ORD)
Contact
Status Completed
Phase Phase 1/Phase 2
Start date June 1995

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