Fecal microbiota transplantation for IBS patients with food intolerance

Fecal Microbiota Transplantation for Irritable Bowel Syndrome Associated Food Intolerance

NA · Helsinki University Central Hospital · NCT05361785

This study is testing whether fecal microbiota transplantation can help people with irritable bowel syndrome and food intolerance feel better and eat a wider variety of foods.

Quick facts

PhaseNA
Study typeInterventional
Enrollment45 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorHelsinki University Central Hospital (other)
Locations1 site (Helsinki, Helsinki and Uusimaa)
Trial IDNCT05361785 on ClinicalTrials.gov

What this trial studies

This study investigates the effects of fecal microbiota transplantation (FMT) on patients with irritable bowel syndrome (IBS) who are following a low FODMAP diet. It is a placebo-controlled trial where participants will receive either FMT or a placebo via enema, with the aim of assessing the safety and efficacy of FMT in alleviating symptoms and allowing for dietary expansion. The study will monitor changes in intestinal microbiome and symptom relief in IBS patients. The research is conducted at multiple locations, including Helsinki University Hospital.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-75 diagnosed with IBS who are currently on a low FODMAP diet.

Not a fit: Patients with other gastrointestinal disorders or severe psychiatric conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for IBS patients struggling with food intolerances.

How similar studies have performed: Previous studies have shown positive effects of FMT in IBS patients, suggesting potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults, age 18-75 years, knowledge of the Finnish language
* IBS patients have been diagnosed with the Rome IV- criteria, all IBS-subtypes will be accepted to the trial
* The patient must consume low FODMAP diet to control IBS symptoms
* Patient must sign the informed consent

Exclusion Criteria:

* Diagnosed allergies to food components in the study dietary protocol
* Pregnancy and breastfeeding
* Antibiotic treatment less than three months prior enrolment
* Faecal incontinence, i.e., inability to retain enema
* Abuse of drugs, alcohol or medications
* Other diagnosis besides IBS causing GI symptoms, these include IBD, microscopic colitis, coeliac disease and bile acid diarrhoea.
* Severe psychiatric or neurologic condition decreasing patient's compliance

Where this trial is running

Helsinki, Helsinki and Uusimaa

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Irritable Bowel Syndrome, Fecal Microbiota Transplantation, FMT, IBS, FODMAP

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.