IRCT2016092429960N1 IRCT 2016-12-01 Tehran University of Medical Sciences Comparison of the therapeutic effect of topical sildenafil gel and oral sildenafil pill in patients with erectile dysfunction Comparison of the therapeutic effect of topical sildenafil gel and oral sildenafil pill in patients with erectile dysfunction 2016-10-22 anticipated 90 Complete https://irct.ir/trial/23954 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: All patients will be randomized with a blocked randomization technique. The treatment group will be assigned with Excel software and use of Rand Function. Patients will be grouped into four-person groups. Physician and patients are not informed about treatment, Blinding description: In the present study, the physician and the drug provider will not be aware of the type of treatment and the group of patients. All patients will receive tablets and gels that have the same appearance and are not aware of the treatment group. Medications with labels A and B are indicated for final analysis and return of results. 3 Erectile dysfunction. Intervention 1: Oral sildenafil pill 50 mg one hour before sexual contact for one month in intervention group. Intervention 2: Topical sildenafil gel which applied half an hour before sexual contact on penis for one month in intervention group. Intervention 3: Placebo Pill and Placebo Gel before sexual contact for one month in control group. Yes - There is a plan to make this available What will be shared: all collected deidentified IPD When: starting 6 months after publication To whom: only available for people working in academic institutions Conditions: Data will be available for re-analysis and also for use in meta-analysis Where to obtain: f-sheybaeem@razi.tums.ac.ir How to obtain: Inform the responsible person via email and after coordination with Dr. Younes Panahi, the data will be available. Comments: