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More info
You can access this
clinical trial
if you have
Erectile Dysfunction
and you are
between 18 and 65
years old
This is a trial in the final phase before the treatment is released on the market.
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The purpose

Viagra (Sildenafil citrate) is an orally active selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5) which is used for the treatment of erectile dysfunction (ED). Objectives: - To test the efficacy of Viagra 100mg on demand vs. Viagra 100mg daily (taken either at bedtime or 1 hour prior to sexual intercourse) in restoring erectile function following radical prostatectomy. - To test the safety and tolerability of Viagra 100 mg on demand vs. Viagra 100 mg daily after radical prostatectomy.

Provided treatments

  • Drug: Sildenafil

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01315262. The sponsor of the trial is Università Vita-Salute San Raffaele and it is looking for 200 volunteers for the current phase.
Official trial title:
On Demand Versus Daily Sildenafil for Patients Undergoing Bilateral Nerve Sparing Radical Prostatectomy: a Randomized, Open Label, Parallel Group Trial