Viagra for the brain? new trial tests sildenafil in chronic TBI patients
NCT ID NCT05782244
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This Phase 2 trial tests whether sildenafil citrate (the drug in Viagra) can improve blood vessel function in the brain of people who had a traumatic brain injury (TBI) at least 6 months ago. Researchers will give different doses (20, 40, or 80 mg) or a placebo to 160 adults aged 18-70. The main goal is to find the best dose for improving brain blood flow, while also checking safety and whether it helps with long-term symptoms.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- sildenafil citrate (Viagra)
- What this could lead to
- If successful, this could point toward a treatment to improve brain blood vessel function and potentially reduce long-term symptoms after traumatic brain injury.
- What could go wrong
- This is an early Phase 2 trial with only 160 participants, so results may not apply to everyone. Sildenafil can cause side effects like headache, flushing, and low blood pressure.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
University of Pennsylvania
RECRUITINGPhiladelphia, Pennsylvania, 19104, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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