Solifenacin Plus Tadalafil vs Solifenacin Alone for Overactive Bladder in Females

NCT ID: NCT07312955

Last Updated: 2025-12-31

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-05-15

Study Completion Date

2025-11-15

Brief Summary

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Overactive bladder (OAB) is characterized by urinary urgency with or without urge urinary incontinence, usually with frequency and nocturia, in the absence of urinary tract infection or other obvious pathology. Antimuscarinic agents such as solifenacin are commonly used but may provide incomplete symptom control. Tadalafil (a Phosphodiesterase type 5 inhibitorsinhibitor) has been reported to improve lower urinary tract symptoms and may offer additional benefit in overactive bladder. This randomized controlled trial evaluates the efficacy and tolerability of solifenacin 5 mg plus tadalafil 5 mg versus solifenacin 5 mg alone in females with overactive bladder using the Overactive Bladder Symptom Score (OABSS).

Detailed Description

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Conditions

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Overactive Bladder

Keywords

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Overactive bladder Urinary urgency Urinary frequency Nocturia Urge urinary incontinence Solifenacin Tadalafil Antimuscarinic agents Phosphodiesterase 5 inhibitors Overactive Bladder Symptom Score Women Females

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants are randomized 1:1 to receive solifenacin 5 mg alone or solifenacin 5 mg plus tadalafil 5 mg for 3 months.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Solifenacin 5 mg Alone

Solifenacin (oral tablet) 5 mg once daily for 3 months.

Group Type ACTIVE_COMPARATOR

Solifenacin

Intervention Type DRUG

Solifenacin 5 mg oral tablet, once daily for 3 months.

Solifenacin 5 mg + Tadalafil 5 mg

Solifenacin (oral tablet) 5 mg once daily plus tadalafil (oral tablet) 5 mg once daily for 3 months.

Group Type EXPERIMENTAL

Tadalafil

Intervention Type DRUG

Tadalafil 5 mg oral tablet, once daily for 3 months.

Interventions

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Solifenacin

Solifenacin 5 mg oral tablet, once daily for 3 months.

Intervention Type DRUG

Tadalafil

Tadalafil 5 mg oral tablet, once daily for 3 months.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Female patients aged 18 to 60 years.
* Symptoms of overactive bladder for more than 6 months.
* Not receiving current medical treatment for overactive bladder.
* Normal liver function tests.
* Normal kidney function.

Exclusion Criteria

* Congestive heart failure or history of recent cardiovascular events.
* Currently on medical treatment for overactive bladder.
* Urinary tract infection (eligible only after treatment and resolution).
* Urinary bladder stones.
* Post-void residual urine \> 100 cubic centimeter (cm³).
* Closed-angle glaucoma or recent ocular problems.
* Postural hypotension.
* History of neurological disorders (e.g., parkinsonism).
* History of intestinal obstruction.
* Pregnancy or planning pregnancy.
* Myasthenia gravis.
* Severe hepatic impairment.
* History of hypersensitivity to solifenacin or tadalafil.
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Ain Shams University

OTHER

Sponsor Role lead

Responsible Party

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Ahmed Sabbah

Resident of Urology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Ain Shams University Hospital (Urology Department)

Cairo, Cairo Governorate, Egypt

Site Status

Countries

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Egypt

Other Identifiers

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FMASU MS 386/2025

Identifier Type: -

Identifier Source: org_study_id