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Blue-green algae protein put to the test: can it rev up immune cells?

NCT ID NCT07733362

Knowledge-focused Sponsor: University of Phayao 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 29, 2026 · Last updated Jul 30, 2026 · Updated 1 time

Summary

This trial tests whether spirulina blue protein capsules can safely influence the immune system in healthy adults aged 25 to 60. Participants take either a placebo or one of two doses (200 mg or 1,000 mg daily) for 12 weeks. Researchers measure changes in key immune cells and blood markers to see if the supplement has any measurable effect.

What this could mean

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

Active substance
spirulina blue protein capsules
What this could lead to
If it works, this could point toward a natural supplement that supports immune health in healthy people.
What could go wrong
This is a small, early-stage trial in healthy volunteers, so results may not apply to people with weakened immune systems. The supplement may have no effect at all.

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 54 people

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

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Dec 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

25 to 60 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 male or female adults aged 25-60 years. * Body mass index (BMI) between 18.5 and 24.9 kg/m². * Able and willing to provide written informed consent. * Willing and able to comply with all study procedures and scheduled visits Exclusion Criteria: * History of diseases affecting the immune system or metabolism, including cardiovascular disease, diabetes mellitus, liver disease, kidney disease, autoimmune disorders, or chronic inflammatory diseases. * Abnormal laboratory findings outside the reference range, including complete blood count, liver function tests, or renal function tests. * Current use of medications or dietary supplements that may affect the study outcomes. * Known allergy to Spirulina, algae-containing dietary supplements, or any component of the study capsules. * Pregnant or breastfeeding women.

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Conditions

The condition(s) this trial relates to.

immune system disorder

As listed by the trial registrant

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

Healthy volunteers Immune system

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 Medical Sciences, University of Phayao

    RECRUITING

    Phayao, Changwat Phayao, 56000, Thailand

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