Viagra is named as an intervention in 3 current clinical trials in our Egypt and USA registers. 2 are recruiting patients now. The most common phase is Phase 1. The sponsor with the most trials is Aspargo Labs, Inc (1). The most-studied condition is Erectile Dysfunction.
| Study | Phase | Status | Lead sponsor | Registers |
|---|---|---|---|---|
|
Comparison Between Treatments of Oligohydramnios
NCT07135037 · ClinicalTrials.gov ↗ · Oligohydramnios
|
Phase 2 | Recruiting | Kafrelsheikh University | Egypt |
|
Nebulized Magnesium Sulfate and Sildenafil for Persistent Pulmonary Hypertension of Newborn
NCT04898114 · ClinicalTrials.gov ↗ · Persistent Pulmonary Hypertension of Newborn
|
Phase 1/2 | Recruiting | Sohag University | Egypt |
|
Study to Compare the Effects of Viagra® Vs Hezkue® in Healthy Fasted Male Participants.
NCT06782659 · ClinicalTrials.gov ↗ · Erectile Dysfunction
|
Phase 1 | Not yet open | Aspargo Labs, Inc | USA |
Registers list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
| Lead sponsor | Trials |
|---|---|
| Aspargo Labs, Inc | 1 |
| Kafrelsheikh University | 1 |
| Sohag University | 1 |
| Register | Trials | Recruiting |
|---|---|---|
| Clinical trials in Egypt | 2 | 2 |
| Clinical trials in USA | 1 | 0 |
A trial with sites in more than one country appears in each of those registers.
3 current trials in our Egypt and USA registers name Viagra as a drug or biological intervention, as of the registry sync on 27 September 2026. Completed and withdrawn studies are not counted.
Yes. 2 of the 3 trials are recruiting: 2 with sites in Egypt. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.
Aspargo Labs, Inc (1), Kafrelsheikh University (1) and Sohag University (1). The number in brackets is how many trials each organisation leads.
Every trial, status, phase and sponsor on this page is copied from public ClinicalTrials.gov records by a daily sync. Nothing here describes how Viagra works or whether it is effective, and it is not medical advice.
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how Viagra works or whether it is effective. Each trial links to its own record so you can check it yourself.
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists Viagra (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 27 Sep 2026.