New study aims to find best blood pressure pill for moms after delivery
NCT ID NCT05551104
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two common blood pressure medications, Nifedipine and Labetalol, to see which works better and is safer for women who develop high blood pressure after giving birth. About 500 new mothers will be randomly assigned to one of the two drugs. The goal is to reduce hospital readmissions and complications from postpartum hypertension.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2023
- Expected to finish
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Dec 2027
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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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Female * Women who develop postpartum hypertension\* after delivery of the placenta or chronic hypertensive postpartum women who require medication for blood pressure control. * Postpartum hypertension requiring treatment are defined as systolic blood pressure greater than or equal to 140mmHg or diastolic blood pressure greater than or equal to 90mmHg on at least 2 occasions at least 4 hours apart, or systolic blood pressure greater than or equal to 160mmHg or diastolic blood pressure greater than 110mmHg sustained for more than 15 minutes. Exclusion Criteria: * History of moderate persistent asthma, coronary artery disease, heart failure, AV heart block, pulmonary edema * Contraindication to either Nifedipine or Labetalol * HR \<60 or \>110 * Native language other than English or Spanish
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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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Loma Linda University Health
RECRUITINGLoma Linda, California, 92350, United States
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