Skip to content

Vitamin D Therapy to Prevent Recurrent Preeclampsia in High-Risk Pregnancies

Preventing Preeclampsia Recurrence in High-Risk Pregnancies Using Vitamin D Therapy: A Randomized Controlled Trial

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07717931
Enrollment
146
Registered
2026-07-21
Start date
2025-08-01
Completion date
2026-01-30
Last updated
2026-07-21

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

Conditions

Preeclampsia

Keywords

Vitamin D, Cholecalciferol, Preeclampsia Recurrence, High-Risk Pregnancy, Pregnancy-Induced Hypertension, Placebo

Brief summary

The goal of this clinical trial is to determine whether vitamin D supplementation can reduce the recurrence of preeclampsia in pregnant women with a previous history of preeclampsia. The main questions the study aims to answer are: \- Does daily vitamin D supplementation reduce the recurrence of preeclampsia compared with a placebo? Researchers will randomly assign 146 eligible pregnant women to receive either vitamin D supplements or a placebo. The two groups will be compared to determine whether vitamin D lowers the risk of recurrent preeclampsia. Participants will: * Be randomly assigned to receive either 4000 IU oral vitamin D once daily or a matching placebo. * Take the assigned study medication daily until 36 weeks of gestation. * Attend follow-up visits every 2 weeks for blood pressure measurement and clinical assessment. * Have serum vitamin D levels measured every 4 weeks to monitor for vitamin D toxicity. * Undergo urine testing for protein if blood pressure is elevated to assess for preeclampsia. The results of this study will help determine whether vitamin D supplementation is an effective and safe strategy for preventing recurrent preeclampsia in women at high risk.

Interventions

Vitamin D 4000 IU will be administered orally once daily from enrollment until 36 weeks of gestation. They will attend follow-up visits every 2 weeks for blood pressure monitoring and clinical assessment, with serum vitamin D levels measured every 4 weeks.

DRUGPlacebo

A matching placebo with the same taste, color, and consistency as vitamin D will be administered orally once daily from enrollment until 36 weeks of gestation for comparison with vitamin D supplementation.

Sponsors

CMH Multan Institute of Medical Sciences
Lead SponsorOTHER_GOV

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
FEMALE
Age
20 Years to 45 Years
Healthy volunteers
No

Inclusion criteria

* Pregnant women * Singleton pregnancy (on USG) * Gestational age ≥ 24-weeks (on LMP method) and * Past medical history of pre-eclampsia (on medical record)

Exclusion criteria

* Pre-existing chronic hypertension * Cardiac diseases (congenital or acquired) * Renal disease * Thyrotoxicosis (on history and medical record) and * Intra-uterine death of the fetus.

Design outcomes

Primary

MeasureTime frameDescription
Recurrence of PreeclampsiaFrom randomization until 36 weeks of gestationRecurrence of preeclampsia will be defined as the development of new-onset hypertension (blood pressure ≥140/90 mmHg) and proteinuria (≥1+ on urine dipstick) at 20 weeks of gestation or later in women with a previous history of preeclampsia. Participants with elevated blood pressure will undergo urine protein testing to confirm the diagnosis.

Countries

Pakistan

Contacts

STUDY_CHAIRNidda Y Assistant Professor, FCPS

CMH Multan Institute of Medical Sciences

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 22, 2026