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Could everyday supplements shield your lungs?

NCT ID NCT01728571

Prevention Sponsor: Brigham and Women's Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 07, 2026 · Last updated Aug 07, 2026

Summary

This trial is testing whether taking daily vitamin D3 and fish oil supplements can reduce the risk of lung problems like COPD flare-ups, asthma attacks, and pneumonia in older adults. It involves over 25,000 men and women aged 50 and older who do not have a history of cancer or heart disease. The study also looks at whether these supplements can improve lung function and asthma control. The goal is to see if these simple, over-the-counter supplements could be a practical way to support respiratory health.

What this could mean

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

Active substance
Vitamin D3 (cholecalciferol) and fish oil (omega-3 fatty acids)
What this could lead to
If effective, these common supplements could offer a simple, low-cost way to reduce respiratory problems like COPD flare-ups, asthma attacks, and pneumonia in older adults.
What could go wrong
This is a large but early-stage analysis; supplements may not show a clear benefit, and results may not apply to everyone. High doses of vitamin D or fish oil can have side effects, though they are generally safe.

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

25,871 people

The number who actually took part.

Started

Jul 2010

Expected to finish

Nov 2027

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

50 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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.

* This study is open to all VITAL participants (NCT 01169259). Population includes men 50 years of age or older and women 55 years of age or older in the United States * Participants who live in selected metropolitan areas of the U.S. (where we set up the infrastructure for clinic or home visits), are eligible for pulmonary function measurements.

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Conditions

The condition(s) this trial relates to.

asthma chronic obstructive pulmonary disease COPD, severe early onset pneumonia

As listed by the trial registrant

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

Asthma COPD Pneumonia Pulmonary function

Contacts and locations

Locations

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115, United States

More trials for these conditions

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