Can aspirin uncover hidden vascular differences in endometriosis?
NCT ID NCT05962034
First seen Jul 27, 2026 · Last updated Jul 28, 2026 · Updated 1 time
Summary
This trial investigates whether women with endometriosis have different blood pressure, pain, and platelet responses compared to healthy women. Participants take aspirin or a placebo and undergo handgrip exercise, cold pressor tests, and blood draws. The goal is to understand how blood vessel regulation differs in endometriosis.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- aspirin (acetylsalicylic acid) and placebo
- What this could lead to
- If differences in vascular regulation are found, this could point toward new ways to manage pain and cardiovascular risk in endometriosis.
- What could go wrong
- This is a small, early-stage study with only 21 participants, so results may not apply broadly. Aspirin is generally safe but can cause stomach upset or bleeding risk.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
-
21 people
The number who actually took part.
- Started
-
Jan 2024
- Finished
-
Jul 2026
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 45 years
- Sex
-
Female participants only
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Born with a uterus * 18-45 years old * With and without endometriosis Exclusion Criteria: * Currently pregnant or breastfeeding * Diagnosed cardiovascular disease * BMI over 35 * Nicotine use (e.g., smoking, chewing tobacco, vaping, etc.) * Currently using hormone replacement therapy (or have used within previous 6 months) * Known skin allergies or current rash, skin disease, disorders of pigmentation * Diabetes * Renal disease, renal artery stenosis, renal impairment * Liver disease * Stage II Hypertension (blood pressure \>140/\>90 mmHg) * Hypotension (blood pressure \< 90/60 mmHg) * Raynaud's syndrome * Any current medications which could conceivably alter cardiovascular responses (e.g. antihypertension medication, diuretic, digoxin) * Allergy or hypersensitivity to investigational agents * Immunosuppressed/immunocompromised
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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
-
Noll Laboratory
University Park, Pennsylvania, 16802, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Appendix: the hidden driver of endometriosis pain?
- Allergy pill put to the test against endometriosis pain
- Can ultrasound and tissue clues reveal which endometriosis lesions carry cancer risk?
- Can AI personalize exercise to ease pelvic pain?
- Can AI learn to spot endometriosis and fibroids on ultrasound?