Skip to content

Effects of Probiotic Supplementation on Symptoms and Intestinal Microbiota in Patients with Diarrhea-Predominant Irritable Bowel Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial

Effects of Probiotic Supplementation on Symptoms and Intestinal Microbiota in Patients with Diarrhea-Predominant Irritable Bowel Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600128626
Enrollment
Unknown
Registered
2026-07-23
Start date
2026-07-26
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Diarrhea-predominant irritable bowel syndrome

Interventions

Multi-strain probiotic group:Subjects in the multi-strain probiotic group received a compound preparation containing multiple probiotic strains and resistant dextrin.
Placebo:Resistant dextrin

Sponsors

Qilu Hospital of Shandong University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1.Aged 18–60 years, no gender restriction; 2.Meet the Rome IV diagnostic criteria for IBS-D; 3.Signed written informed consent;

Exclusion criteria

Exclusion criteria: 1.Presence of infectious diarrhea or drug-induced diarrhea; 2.Suffering from inflammatory bowel disease, antibiotic-associated diarrhea or other similar gastrointestinal disorders; 3.Pregnant or breastfeeding women; 4.Subjects with gastrointestinal hemorrhage; 5.Organic intestinal diseases (e.g., colon cancer, inflammatory bowel disease, etc.); 6.History of gastrointestinal surgery; 7.Concomitant use of drugs known to affect gastrointestinal motility; 8.Administration of antibiotics or probiotics within the past two weeks; 9.Subjects who fail to consume the test product as required or miss scheduled follow-ups, rendering efficacy unevaluable; 10.Any subjects deemed unsuitable for participation by the investigators for other reasons;

Design outcomes

Primary

MeasureTime frame
Symptoms of subjects with IBS-D;

Secondary

MeasureTime frame
Gut microbiota;Safety indicators;Quality of life;

Countries

China

Contacts

Public ContactZhou Tao

Qilu Hospital of Shandong University

zhoutao@sdu.edu.cn+86 531 82166601

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Aug 10, 2026