Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 20 to 45 Women only

Vitamin D to prevent recurrent pre-eclampsia in pregnant women

Official title: Role of Vitamin D in Prevention of Preeclampsia Recurrence in Pregnant Women With Previous History of Preeclampsia: A Randomized Controlled Trial

Run by Nishtar Medical University · NCT07288801 · Data updated 2026-11-12

This study will test whether taking 4,000 IU of vitamin D during pregnancy lowers the chance of pre-eclampsia returning in women who had it in a prior pregnancy.

More Pregnancy trials

Quick facts

PhasePhase 4
Study typeInterventional
Ages20 Years to 45 Years
SexWomen only
Enrollment146 (estimated)
SponsorNishtar Medical University
Academic / other
Locations1 site (Multan, Punjab Province)
StatusRecruiting
StartedAugust 9, 2025
Main results expectedFebruary 8, 2026
Study endsFebruary 8, 2026
Registry record updatedDecember 17, 2025
Trial IDNCT07288801 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Pregnant women at or beyond 20 weeks' gestation with a documented history of pre-eclampsia who can attend biweekly visits at Nishtar Hospital and do not have excluded comorbidities are ideal candidates.

Probably not a fit

Women with pre-existing hypertension, significant cardiac or renal disease, thyrotoxicosis, or those presenting with intrauterine fetal death are excluded and unlikely to benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, placebo-controlled Phase 4 trial enrolls pregnant women with a history of pre-eclampsia at the antenatal clinic of Nishtar Medical University and Hospital in Multan. Participants are randomized to receive either 4,000 IU oral vitamin D daily or a matching placebo until 36 weeks' gestation, alongside standard antenatal care. Women attend clinic visits every two weeks for blood pressure checks, and urine protein testing is performed if blood pressure reaches 140/90 mmHg or higher. The trial compares rates of recurrent pre-eclampsia between groups to see if supplementation reduces recurrence.

Why it matters

Potential benefit: If successful, this could reduce the recurrence of pre-eclampsia and lower related risks to mothers and babies by using an inexpensive, widely available supplement.

How similar studies have gone: Observational studies have linked low vitamin D to higher pre-eclampsia risk, but randomized trials to date have shown mixed and inconclusive results regarding prevention of recurrence.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Gestational age ≥ 20-weeks (on LMP method) ' - Past medical history of pre-eclampsia

Exclusion Criteria:

* Pre-existing hypertension, cardiac diseases, renal disease, thyrotoxicosis (on history and medical record)
* Women presenting with intra-uterine death of the fetus.

Where it's running

  • Nishtar Medical University and Hospital
    Multan, Punjab Province, Pakistan
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.