Evaluating probiotics for autism symptoms and quality of life in children

The Effect of a Multispecies Probiotics on Autism Symptoms in Children

Not applicable Interventional Medical University of Warsaw · NCT06448767

This study is testing if a special probiotic can help improve autism symptoms and quality of life for children aged 7 to 15 with Autism Spectrum Disorder.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment110 (estimated)
Ages7 Years to 15 Years
SexAll
SponsorMedical University of Warsaw Academic / other
Locations3 sites (Warsaw, Warsaw and 2 other locations)
Trial IDNCT06448767 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effects of a multispecies probiotic on children aged 7 to 15 diagnosed with Autism Spectrum Disorder (ASD). In a randomized, double-blind, placebo-controlled design, 108 participants will receive either the probiotic or a placebo for 12 weeks. The study aims to assess core autism symptoms and quality of life using validated questionnaires, alongside secondary outcomes related to sleep, parental stress, gastrointestinal symptoms, and urinary p-cresol levels. Assessments will occur at baseline and after the intervention period to evaluate changes in these outcomes.

Who should consider this trial

Good fit: Ideal candidates are children aged 7 to 15 with a diagnosis of Autism Spectrum Disorder who meet specific inclusion criteria.

Not a fit: Patients who have recently used antibiotics or probiotics, have severe immunodeficiency, or have a history of intolerance to probiotics may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a novel therapeutic option to improve autism symptoms and enhance the quality of life for affected children.

How similar studies have performed: While the use of probiotics in autism is an emerging area, previous studies have shown promising results, suggesting potential benefits in similar approaches.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Diagnosis of ASD according to the Diagnostic and Statistical Manual of Mental Disorders, the fifth edition (DSM-5) or International Classification of Diseases, Tenth Revision (ICD-10).
2. Children either not taking any medication or receiving the same medication for the last 2 months.
3. Patients, or their parents/caregivers, are willing to provide written informed consent, proceed with nutritional supplements throughout the 3-month trial, refrain from starting any kind of special diet for the duration of the study, and complete the questionnaires at two time points during the study.

Exclusion Criteria:

1. Use of antibiotics in the previous 2 months before enrolling (excluding topical antibiotics).
2. Use of probiotics or synbiotics within the previous 2 months.
3. History of intolerance or allergy to probiotics, synbiotics or any other study product component.
4. Surgery with bowel resection or short bowel syndrome.
5. Children with severe immunodeficiency.

Where this trial is running

Warsaw, Warsaw and 2 other locations

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.
Conditions Autism Spectrum DisorderProbiotics
Last reviewed 2026-06-13 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.