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Can fiber powders ease constipation? new study seeks answers

NCT ID NCT07202481

Symptom relief Sponsor: Federal University of Minas Gerais 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether taking psyllium or fructooligosaccharide (two types of fiber) for six days improves bowel function in women with constipation. Twenty-five women will try each fiber and a control, keeping a diary and having a scan to measure how fast food moves through their gut. The goal is to see which fiber works better and if they cause side effects.

What this could mean

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

Active substance
psyllium powder and fructooligosaccharide (dietary fibers)
What this could lead to
If it works, this could show that simple fiber supplements help women with constipation have more regular bowel movements.
What could go wrong
This is a very small, short-term study (25 women, 6 days per fiber). Results may not apply to everyone, and fibers can cause bloating or gas.

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 25 people

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

Started

Mar 2026

Expected to finish

Dec 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

18 to 59 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 * Female participants aged 18-59 years. * Willingness to sign the Informed Consent Form . * No restrictions on the consumption of egg or gluten. * No history or diagnosis of gastrointestinal diseases other than functional constipation. * Non-smokers. * No use of prebiotics, probiotics, synbiotics, or antibiotics at least 10 days prior to the study. * No previous surgery affecting gastrointestinal transit. * Willingness to discontinue the use of laxatives at least 4 days prior to scintigraphic imaging. * Participants who do not consume adequate dietary fiber (25-30 g/day) as assessed by dietary recall. * No confirmed or suspected pregnancy during the study. * No self-reported menopause Exclusion Criteria * Diagnosis of diabetes, severe hyperthyroidism, or hypothyroidism. * Use of opioid medications. * Delayed gastric emptying at 4 hours during the placebo period (participants meeting this criterion will be excluded from final analysis).

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Conditions

The condition(s) this trial relates to.

constipation disorder

As listed by the trial registrant

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

Constipation - functional

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

  • School of Nursing, Federal University of Minas Gerais

    RECRUITING

    Belo Horizonte, Minas Gerais, 30130-100, Brazil

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