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Which drug stops preterm labor best? new study pits progesterone against nifedipine

NCT ID NCT07649668

Disease control Sponsor: Dr Mudassar Saeed Pansota Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study tested two common drugs—vaginal progesterone and oral nifedipine—to see which works better at delaying preterm labor in 160 pregnant women aged 18-35 with a single baby. The goal was to prevent delivery within 48 hours or before 37 weeks. Results could help doctors choose the best treatment to reduce early births.

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 and nifedipine
What this could lead to
If this trial shows one drug works better, it could help doctors choose the best option to delay preterm labor and reduce early births.
What could go wrong
This is a completed Phase 4 trial with 160 participants, but results may not apply to all pregnant women, especially those with complications or multiple pregnancies.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

160 people

The number who actually took part.

Started

Nov 2025

Finished

May 2026

Lead sponsor

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

18 to 35 years

Sex

Female participants only

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * All the females aged 18-35 year * Singleton pregnancy * With gestational age of 24 weeks to 36 weeks * With presentation of the threatened preterm labor Exclusion Criteria: * Pregnant women with presentation cervical dilation (\>3 cm), * Patients with known contraindications to receiving either vaginal progesterone or oral nifedipine * Patients with co morbidities such as GDP, gestational hypertension, preeclampsia * Multiple pregnancy

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Conditions

The condition(s) this trial relates to.

Obstetric Labor, Premature

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Preterm labor

Contacts and locations

Locations

  • Hilal-e-ahmar Hospital

    Faisalabad, Punjab Province, 60000, Pakistan

More trials for these conditions

Other studies related to the condition(s) this trial covers.