Progesterone pill may stop dangerous pregnancy condition
NCT ID NCT07448597
First seen Jun 27, 2026 · Last updated Aug 18, 2026 · Updated 2 times
Summary
This study tests whether taking progesterone early in pregnancy can prevent preeclampsia, a condition that causes high blood pressure and organ damage. Over 600 low-risk pregnant women will either receive nightly vaginal progesterone or standard care. Researchers will track who develops preeclampsia and other complications.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- vaginal progesterone
- What this could lead to
- If it works, this could offer a simple, low-cost way to prevent preeclampsia, a dangerous pregnancy complication.
- What could go wrong
- This is a phase 4 trial, but results are not yet available. The benefit may be small or absent, and progesterone can cause side effects like drowsiness or nausea.
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
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 642 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2026
- Expected to finish
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Aug 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Female participants only
- Healthy volunteers
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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: * Pregnant individuals receiving prenatal care at participating clinics * \<12 weeks gestation with a viable intrauterine pregnancy * Age ≥18 years * English-speaking Exclusion Criteria: * Unable or unwilling to self-administer vaginal progesterone * Inability or unwillingness to provide informed consent
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Medical University of South Carolina
RECRUITINGCharleston, South Carolina, 29401, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a fetal heart ultrasound index predict trouble in High-Risk pregnancies?
- A bracelet and a blood pressure cuff: a simple plan to protect new mothers at risk
- Can a Light-Based scan spot preeclampsia before it strikes?
- Light-Based imaging may spot High-Risk preeclampsia early
- Can a malaria drug help prevent preeclampsia?
- Which drug best steadies blood pressure during C-Section in preeclampsia?