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Progesterone Preeclampsia

Progesterone Supplementation for the Prevention of Preeclampsia

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07448597
Enrollment
642
Registered
2026-03-04
Start date
2026-08-13
Completion date
2028-08-01
Last updated
2026-08-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertensive Disorder of Pregnancy, Preeclampsia

Keywords

Progesterone

Brief summary

This randomized controlled trial evaluates whether nightly vaginal micronized progesterone (400 mg) initiated before 12 weeks' gestation reduces the incidence of preeclampsia in low-risk pregnant individuals. Participants will be randomly assigned (1:1) to receive either vaginal progesterone through 16 weeks' gestation or routine prenatal care without progesterone. Maternal and neonatal outcomes-including development of preeclampsia, obstetric complications, gestational diabetes, preterm birth, and neonatal morbidity-will be collected via chart review. The study aims to determine whether early progesterone supplementation decreases the risk of preeclampsia.

Interventions

Patients in the progesterone arm will be randomized to receive progesterone supplementation while the control arm will not receive any additional intervention.

Sponsors

Medical University of South Carolina
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes

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

Design outcomes

Primary

MeasureTime frameDescription
Development of preeclampsiaAntenatally and up to 6 weeks postpartumDefined as new onset systolic blood pressure ≥ 140 or diastolic blood pressure ≥ 90 on two occasions at least 4 hours apart, after 20 weeks gestation, with proteinuria or evidence of maternal acute kidney impairment, liver dysfunction, neurologic features, hemolysis, or thrombocytopenia

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 18, 2026