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Daily Tadalafil 5 mg Combined With On-Demand Sildenafil 100 mg for Treatment of Erectile Dysfunction in PDE-5I Non Responder Patients
Sponsor: Mansoura University
Summary
The goal of this clinical trial is to evaluate whether daily dosing with tadalafil 5 mg combined with on-demand sildenafil 100 mg can improve erectile function in men with erectile dysfunction (ED) who do not respond to PDE5 inhibitor alone. The main questions it aims to answer are: * Does the combination of daily tadalafil and on-demand sildenafil lead to a greater improvement in erectile function (measured by the IIEF-EF domain) compared with on-demand sildenafil alone? * Is the combination therapy safe and well tolerated in this patient population? Researchers will compare: * Group A: Daily tadalafil 5 mg plus on-demand sildenafil 100 mg * Group B: Daily placebo plus on-demand sildenafil 100 mg to determine whether the combination regimen provides superior improvement in erectile function and patient satisfaction. Participants will: * Undergo baseline assessment including medical history, physical examination, and laboratory tests. * Be randomly assigned to one of the two treatment groups. * Take the assigned medications for 12 weeks. * Complete follow-up evaluations at 4, 8, and 12 weeks, including: International Index of Erectile Function (IIEF-15) questionnaire Erection Hardness Score (EHS) assessment Reporting of any adverse effects
Official title: Daily Tadalafil 5 mg Combined With On-Demand Sildenafil 100 mg for Treatment of Erectile Dysfunction in PDE-5I Non Responder Patients: A Multicenter Randomized, Double-Blind, Placebo-Controlled Trial
Key Details
Gender
MALE
Age Range
21 Years - Any
Study Type
INTERVENTIONAL
Enrollment
500
Start Date
2025-12-01
Completion Date
2027-06
Last Updated
2026-02-06
Healthy Volunteers
No
Conditions
Interventions
Tadalafil 5 mg & Sildenafil 100mg
daily dosing of Tadalafil 5 mg combined with on demand Sildenafil 100mg
Sildenafil 100mg & placebo
Daily Placebo combined with on demand Sildenafil 100mg
Locations (11)
Urology and Nephrology Center, Mansoura University
Al Mansurah, Dakahlia Governorate, Egypt
Faculty of medicine, Alexandria University
Alexandria, Egypt
Faculty of medicine, Aswan university
Aswān, Egypt
Faculty of Medicine - Assiut University
Asyut, Egypt
Cairo University, faculty of medicine
Cairo, Egypt
Faculty of medicine, Ain Shams University
Cairo, Egypt
Faculty of medicine, Azhar University
Cairo, Egypt
Faculty of medicine, october 6 Univeristy
Cairo, Egypt
Faculty of medicine, Luxor university
Luxor, Egypt
faculty of medicine, Minya University
Minya, Egypt
Faculty of medicine, Tanta University
Tanta, Egypt