Could a probiotic tame ulcerative colitis? early trial begins

NCT ID NCT05666960

First seen Feb 01, 2026 · Last updated Jun 22, 2026 · Updated 22 times

Summary

This early-stage study is testing whether an oral probiotic called R-3750 is safe and tolerable for people with mild to moderate ulcerative colitis. About 36 adults will take the probiotic and be monitored for side effects, inflammation, and symptom changes. The goal is to see if this gentle approach could help control the disease.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • AP Medical Research LLC

    RECRUITING

    Miami, Florida, 33165, United States

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Adtremed Research Clinic

    RECRUITING

    Tampa, Florida, 33634, United States

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Amicis Research Center

    RECRUITING

    Valencia, California, 91355, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • Edward Jenner Research Group, LLC

    RECRUITING

    Plantation, Florida, 33317, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • Mayo Clinic

    RECRUITING

    Rochester, Minnesota, 55902, United States

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

What this could mean

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

Active substance

R-3750 (probiotic)

What this could lead to

If it works, this could point toward a new, gentle treatment option for mild to moderate ulcerative colitis that uses a probiotic instead of stronger drugs.

What could go wrong

This is a very early Phase 1 trial with only 36 people, so it is primarily checking safety, not effectiveness. The probiotic may not improve symptoms or could cause side effects.

Conditions

The condition(s) this trial relates to.

colitis ulcerative colitis

As listed by the trial registrant

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