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Calcium supplement may speed up labor and cut C-Sections

NCT ID NCT06352775

What the study statuses mean

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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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This pilot study tests whether giving calcium carbonate to pregnant women during labor induction can shorten the time needed and reduce the need for C-sections. Researchers will compare 250 women who receive calcium with a historical control group. The goal is to see if this simple, low-cost approach is safe and effective.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

250 people

The number who actually took part.

Started

Jun 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

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 years and older

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: * Adult laboring patients ( ≥ 18 years of age) * Able to speak and read English or Spanish (for historical cohort, preferred language should be English or Spanish) * Singleton gestation * Greater ≥ 37 weeks gestation in vertex presentation * Present for induction of labor inclusive of medical indication, elective indication at greater than 39 weeks gestation, trial of labor after cesarean * Receive standard-dose oxytocin during induction Exclusion Criteria: * Participants will be excluded from the study if they do not meet the above inclusion criteria or they will be further excluded under the following circumstances: * Known need for cesarean section prior to induction of labor * Known allergy to calcium carbonate * Known contraindication to taking calcium carbonate including renal calculus, high urine calcium levels, elevated serum calcium, low serum phosphate, achlorhydria, or suspected digoxin toxicity. * Inability to tolerate oral intake (i.e., nausea/vomiting) * Need to be nothing by mouth (NPO)

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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.

Contacts and locations

Locations

  • Aurora Sinai Medical Center

    Milwaukee, Wisconsin, 53233, United States

More trials for these conditions

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