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Can a prebiotic pill protect against sleep loss?

NCT ID NCT03747367

Knowledge-focused Sponsor: University of Colorado, Boulder 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at how not getting enough sleep and being awake at odd hours affects your thinking, blood chemistry, and the helpful bacteria in your gut. Researchers gave 55 healthy adults a prebiotic supplement or a placebo to see if it could help counter the negative effects. The goal is to find ways to help people like emergency workers and military personnel stay sharp despite disrupted sleep.

What this could mean

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

Active substance
Prebiotic supplement (polydextrose and galacto-oligosaccharide)
What this could lead to
If successful, this could point toward dietary strategies to help people like shift workers and emergency responders stay resilient to the effects of sleep loss.
What could go wrong
This is a small, early-stage study focused on measuring changes, not testing a treatment. The prebiotic may not produce meaningful benefits, and results may not apply to the general public.

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

55 people

The number who actually took part.

Started

Oct 2015

Finished

Mar 2020

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 45 years

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.

Inclusion Criteria: * Healthy * Currently residing at Denver altitude or higher Exclusion Criteria: * Current major medical disorder Experiment 1 and 2, ages 18-35. Experiment 3 and 4, 18-45. Experiment 3 only: Early Morning Shift Workers Experiment 4 only: Individuals Receiving Less than 6.5 hours of Sleep At Night

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Conditions

The condition(s) this trial relates to.

Chronobiology Disorders circadian rhythm sleep disorder Sleep Deprivation

As listed by the trial registrant

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

Circadian dysregulation Sleep deprivation Stress

Contacts and locations

Locations

  • Sleep and Chronobiology Laboratory

    Boulder, Colorado, 80309-0554, United States

More trials for these conditions

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