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A 6-week, Randomized, Double-blind, Placebo-Controlled Clinical Trial for the Evaluation of the Efficacy and Safety of Heat-killed Limosilactobacillus fermentum MG4717 on Irritable Bowel Syndrome with Diarrhea(IBS-D)

A 6-week, Randomized, Double-blind, Placebo-Controlled Clinical Trial for the Evaluation of the Efficacy and Safety of Heat-killed Limosilactobacillus fermentum MG4717 on Irritable Bowel Syndrome with Diarrhea(IBS-D)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CRIS
Registry ID
KCT0011190
Enrollment
60
Registered
2025-11-21
Start date
2025-11-17
Completion date
Unknown
Last updated
2025-12-08

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

Conditions

None listed

Interventions

Dietary Supplement : Participants will consume the assigned investigational product (IP) once daily for 6 weeks according to their randomized group allocation. Intervention group: Receives Heat-kille

Sponsors

Mediogen
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Man and women aged 19 to 70 years. 2) Individuals whose symptoms of diarrhea-predominant irritable bowel syndrome (IBS-D) began at least 6 months prior to Visit 1, who have experienced symptoms at least once per week on average during the 3 months prior to Visit 1, and who meet at least two of the Rome IV diagnostic criteria for IBS-D. 3) Individuals who voluntarily agree to participate in the study and sign the Informed Consent Form (ICF) prior to the start of the human intervention study.

Exclusion criteria

Exclusion criteria: 1) Individuals currently receiving treatment for severe cardiovascular, immune, respiratory, gastrointestinal/hepatobiliary, renal/urinary, neurologic, endocrine, psychiatric, infectious diseases, or malignant tumors. 2) Individuals with organic diseases of the small or large intestine, or other conditions that may affect gastrointestinal motility (e.g., inflammatory bowel disease, malabsorption, lactose intolerance), except for benign colon polyps. 3) Individuals with a history of drug abuse. 4) Individuals with a history of alcohol abuse or those who consume alcohol equivalent to =40 g/day for men (=280 g/week) or =20 g/day for women (=140 g/week). 5) Individuals with a history of small or large bowel surgery (appendectomy, hernia repair, and cholecystectomy are allowed). 6) Individuals diagnosed within the past 2 years (based on Visit 1) with gastrointestinal diseases of known cause (e.g., Crohn’s disease, celiac disease, ulcerative colitis, colorectal cancer). 7) Individuals who used the following medications or health functional foods within 4 weeks prior to Visit 1: ? Medications that may affect IBS symptoms ? Systemic antibiotics, systemic antimicrobials, intestinal regulators, antidiarrheals, antispasmodics, laxatives ? Probiotics, prebiotics, or lactic acid bacteria products consumed regularly (=4 days per week) 8) Individuals who consumed health functional foods that may affect bowel habits within 2 weeks prior to Visit 1. 9) Individuals with rectal bleeding or those who experienced =10% unintentional weight loss within 6 months prior to Visit 1. 10) Individuals with AST (GOT) or ALT (GPT) levels =3 times the upper limit of normal. 11) Individuals with creatinine levels >2.0 mg/dL. 12) Individuals with uncontrolled diabetes (HbA1c =7.0%). 13) Individuals with an ESR >30 mm/hr. 14) Individuals with a CRP >2.0 mg/dL. 15) Individuals with abnormal dietary habits or with significant dietary changes within 4 weeks prior to Visit 1 (e.g., strict vegetarian diet). 16) Pregnant or breastfeeding women, or women planning to become pregnant during the study period. 17) Individuals who participated in another interventional clinical study within 3 months prior to Visit 1, or who plan to participate in another interventional study during this trial. 18) Individuals with known hypersensitivity or allergy to any component of the investigational product (test or placebo). 19) Individuals who, for any other reason, are judged by the investigator to be unsuitable for the study.

Design outcomes

Primary

MeasureTime frame
Stool frequency and form

Secondary

MeasureTime frame
Abdominal discomfort;Irritable Bowel Syndrome_Symptom Severity Score (IBS-SSS);Irritable Bowel Syndrome_Quality of Life (IBS-QOL);Cytokine: Interleukin-6 (IL-6), Interleukin-8 (IL-8), Interleukin-10 (IL-10);Fecal microbiome analysis

Countries

Korea, Republic of

Contacts

Public ContactMun-cheol Lee

Bestian Seoul Hospital

mbbestian@bestian.kr+82-2-3452-7575

Outcome results

None listed

Source: CRIS (via WHO ICTRP) · Data processed: Feb 4, 2026