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Asthma relief in a chew? plant stanols put to the test

NCT ID NCT03983603

Symptom relief Sponsor: Maastricht University Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study is testing whether eating a soft chew containing plant stanols every day can reduce asthma symptoms in people with allergic asthma. Plant stanols are known to lower cholesterol, but they may also shift the immune system away from the type of response that triggers asthma attacks. The trial will enroll 160 adults with stable allergic asthma and compare the stanol chew to a placebo over time, measuring symptom control and other health markers.

What this could mean

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

Active substance
plant stanols (as plant stanol esters) in soft chews
What this could lead to
If it works, this could point toward a simple dietary supplement to help manage asthma symptoms and reduce reliance on medication.
What could go wrong
This is an early exploratory trial, so results may not show clear benefit. The effect on asthma is theoretical, and the supplement may not improve symptoms in real-world settings.

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

About 160 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2019

Expected to finish

Sep 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 to 70 years

Sex

Anyone

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: * Diagnosed with allergic asthma (GINA step 1-4) which is in a stable phase at the moment of inclusion (defined as no changes in asthma control and lung function in (at least) the past three months) * Have been treated with prescribed asthma medication for at least one year * Aged 18-70 years old * BMI between 20 and 35 kg/m2 * Willing to abstain from products containing plant sterols or stanols one month prior to the study (products with a cholesterol lowering claim of Becel ProActiv, Benecol, Danacol, store brands) * Willing to abstain from products containing plant sterols or stanols during the study (products with a cholesterol lowering claim of Becel ProActiv, Benecol, Danacol, store brands) * Willing to keep the intake of fish oil supplements constant Exclusion Criteria: * Currently smoking or quitted smoking in the past year, with a maximum of 10 packyears as smoking history (packyears = packs per day \* years of smoking) * Allergy to an ingredient of the soft chews * Suffering from inflammatory diseases (for CVD, illness must be minimally 3 years ago and currently under control in order to participate in the study) * Fasting plasma glucose \> 7.0 mmol/L * Fasting serum TC \> 8.0 mmol/L * Having donated blood within one month prior to the start of the study, or planning to donate blood during the study * Pregnant women * Breastfeeding women

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Conditions

The condition(s) this trial relates to.

allergic asthma asthma cardiovascular disorder

As listed by the trial registrant

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

Asthma, allergic Cardiovascular diseases

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Maastricht University Medical Center

    RECRUITING

    Maastricht, Limburg, 6229ER, Netherlands

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