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Could a daily vitamin during pregnancy boost your Child's brain development?

NCT ID NCT03071666

Disease control Sponsor: Centre For International Health 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether giving pregnant women a daily vitamin B12 supplement (50 micrograms) from early pregnancy until six months after birth helps their children grow and think better. Researchers are enrolling 800 pregnant women in Nepal who are at risk of low B12 levels. The children will be followed for two years to measure growth and brain development.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Vitamin B12 (cobalamin) supplement
What this could lead to
If it works, this could lead to simple dietary guidelines for pregnant women to help their children grow and develop better.
What could go wrong
This is a mid-stage trial, so results may not be conclusive. The supplement may not show a clear benefit over placebo, and effects may vary by individual.

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 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

800 people

The number who actually took part.

Started

Mar 2017

Expected to finish

Dec 2029

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

20 to 40 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: * Pregnant mother in early pregnancy and not later than 15 weeks of pregnancy. * Current resident and plan to reside in Bhaktapur district for at least the next 2 years. * Age of mother between 18 and 40 years. * Consent to participate in the study. Exclusion Criteria: * Taking or plan to take dietary or multivitamin supplements containing vitamin B12. * Known case of chronic disease like asthma, tuberculosis, diabetes, hypertension, hypo or hyperthyroidism or others * Known case of current high risk pregnancy * Severe anemia (hemoglobin concentration \<7 g/dL). * Where the study doctor finds it necessary to treat the woman with vitamin B12 or vitamin B12 containing supplements

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Conditions

The condition(s) this trial relates to.

anemia pregnancy disorder vitamin B12 deficiency

As listed by the trial registrant

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

Anemia Pregnancy related Vitamin B 12 deficiency

Contacts and locations

Locations

  • Manjeswori Ulak

    Bhaktapur, P.O.Box 40, Nepal

More trials for these conditions

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