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Efficacy and mechanism of multi-strain probiotic intervention in patients with irritable bowel syndrome: a randomised, double-blind, placebo-controlled trial

Efficacy and mechanism of multi-strain probiotic intervention in patients with irritable bowel syndrome: a randomised, double-blind, placebo-controlled trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600121286
Enrollment
Unknown
Registered
2026-03-27
Start date
2026-04-03
Completion date
Unknown
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

irritable bowel syndrome

Interventions

The experimental group:The experimental group received standard therapy (trimebutine maleate 0.1g three times daily, orally 30minutes before meals) combined with the multi-strain probiotic, 1 bottle o
The control group:The control group received standard therapy (trimebutine maleate 0.1g three times daily, orally 30minutes before meals) combined with a placebo of the multi-strain probiotic, 1 bottl

Sponsors

Peking University Third Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. Aged 18–65 years, inclusive, regardless of gender; 2. Meeting the Rome IV diagnostic criteria for IBS: recurrent abdominal pain for at least 6 months, occurring at least 1 day per week in the last 3 months, and associated with two or more of the following: related to defecation, associated with a change in frequency of stool, associated with a change in form (appearance) of stool; 3. Signed informed consent and willing to comply with the study protocol requirements.

Exclusion criteria

Exclusion criteria: 1. Organic gastrointestinal disease identified by endoscopy; 2. Severe cardiac, hepatic, pulmonary, renal, hematologic, endocrine, or neurologic diseases, mental disorders, or chronic diseases requiring long-term oral medication; severe infections of the respiratory, digestive, urinary tract, or other sites; 3. Pregnant or lactating women, or individuals planning pregnancy within the next 3 months; 4. Participation in or recent planning to participate in a major dietary, exercise, or lifestyle intervention program within the past 3 months; 5. Use of antibiotics, immunosuppressants, or probiotics within the past 3 months; use of acid-suppressing drugs within the past 8 weeks; 6. Use of prokinetic agents more than 3 times per week within the past 2 weeks, or use of non-steroidal anti-inflammatory drugs, bile-acid sequestrants, or ursodeoxycholic acid within the past 2 weeks; 7. Allergic diseases, or use of antihistamines, mast-cell stabilizers, or other anti-allergic medications; 8. Personal or first-degree relative history of type 1 diabetes, celiac disease, inflammatory bowel disease, psoriasis, or other autoimmune/rheumatic disorders; 9. History of abdominal surgery (excluding appendectomy or splenectomy); 10. Known allergy to any component of the investigational product; 11. Long-term alcohol consumption (>5 years, with ethanol intake =40 g/day for males or =20 g/day for females) or heavy alcohol consumption (>80 g/day ethanol) within the past 2 weeks; 12. Participation in another interventional clinical trial within 3 months prior to screening; 13. Considered by the investigator to be unsuitable for participation.

Design outcomes

Primary

MeasureTime frame
clinical response rate;

Secondary

MeasureTime frame
Improvement of gastrointestinal symptoms;Improvement in quality of life;Improvement of anxiety;Improvement in depressive symptoms;Improvement of sleep quality ;changes in fecal microbiota and metabolites;changes in brain functional imaging;changes in peripheral blood inflammatory cytokines and neurotransmitters;changes in colonic mucosal pathology;

Countries

China

Contacts

Public ContactDuan Liping

Peking University Third Hospital

duanlp@bjmu.edu.cn+86 10 8280 6003

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Apr 4, 2026