Lactic Acid Bacteria in Functional Diarrheal Disorders
Efficacy of Lactic Acid Bacteria in Managing Diarrhea-Associated Functional Gastrointestinal Disorders: A Randomized Controlled Trial
The goal of this clinical trial is to learn whether a probiotic supplement can improve symptoms and quality of life in adults with diarrhea-predominant irritable bowel syndrome (IBS-D) or functional diarrhea (FD). These conditions can cause frequent loose stools, abdominal discomfort, and a lower quality of life.
The main questions this study aims to answer are:
- Does the probiotic improve quality of life compared with a placebo (a look-alike capsule that contains no active bacteria)?
- Does the probiotic help participants have more normal stool consistency and fewer bowel movements?
- Is the probiotic safe and well tolerated in people with IBS-D or FD?
Researchers will compare the probiotic supplement with a placebo to see whether the probiotic improves symptoms and quality of life.
Participants will:
- Take either the probiotic or placebo capsule once daily for 3 months.
- Switch to the other study treatment for an additional 3 months.
- Complete quality-of-life questionnaires at the start of the study, after 3 months, and after 6 months.
- Record the number of bowel movements each day throughout the study.
- Record stool consistency each day using the Bristol Stool Form Scale.
- Record daily pain during bowel movements using a Visual Analog Scale (VAS).
- Report any medications they take and any health problems that occur during the study.
The study will follow each participant for 6 months. Researchers hope the results will help determine whether this probiotic is a useful treatment option for people living with IBS-D or functional diarrhea.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Tamás Molnár
- Telefonnummer: +36-62-545-189
- E-mail: molnar.tamas@med.u-szeged.hu
Studiesteder
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-
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Szeged, Ungarn, 6725
- Rekruttering
- University of Szeged
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Kontakt:
- Tamás Molnár
- Telefonnummer: +36-62-545-189
- E-mail: molnar.tamas@med.u-szeged.hu
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Adults aged 18 years or older.
- Have diarrhea-predominant irritable bowel syndrome (IBS-D) or functional diarrhea (FD) diagnosed using Rome V criteria.
- Have had symptoms for at least 6 months.
- Have no warning signs that suggest another digestive disease.
- Have been taking the same treatment for IBS-D, FD, and other medical conditions for at least 1 month before joining the study.
- Are willing and able to provide written informed consent and follow study procedures.
Exclusion Criteria:
- Took antibiotics or probiotic products within the past 4 weeks.
- Had abdominal surgery in the past, except appendix removal (appendectomy).
- Have another type of irritable bowel syndrome or another functional digestive disorder.
- Have a known digestive disease that may explain their symptoms.
- Plan to start a new medication or change the dose of an existing medication during the study (except antispasmodic medications).
- Are unable or unwilling to complete study questionnaires and daily symptom records.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Experimental First Arm
Participants randomized to this arm will receive LL1500, a probiotic supplement containing Lactobacillus rhamnosus and Lactobacillus plantarum, once daily for 3 months, followed by crossover to matching placebo for an additional 3 months under double-blind conditions. |
LL1500 is an oral probiotic supplement administered once daily as a gelatin capsule. Each capsule contains lyophilized Lactobacillus rhamnosus and Lactobacillus plantarum, providing at least 7.5 × 10⁹ colony-forming units (CFU) of each bacterial strain. Participants will receive LL1500 for a 3-month treatment period. Matching oral placebo administered once daily as a gelatin capsule containing inactive excipients and no live bacterial strains. Participants will receive placebo for a 3-month treatment period. |
|
Placebo komparator: Placebo First Arm
Participants randomized to this arm will receive matching placebo once daily for 3 months, followed by crossover to LL1500, a probiotic supplement containing Lactobacillus rhamnosus and Lactobacillus plantarum, for an additional 3 months under double-blind conditions. |
LL1500 is an oral probiotic supplement administered once daily as a gelatin capsule. Each capsule contains lyophilized Lactobacillus rhamnosus and Lactobacillus plantarum, providing at least 7.5 × 10⁹ colony-forming units (CFU) of each bacterial strain. Participants will receive LL1500 for a 3-month treatment period. Matching oral placebo administered once daily as a gelatin capsule containing inactive excipients and no live bacterial strains. Participants will receive placebo for a 3-month treatment period. |
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Irritable Bowel Syndrome Quality of Life (IBS-QOL) Total Score at 3 Months
Tidsramme: Three months after enrollment
|
IBS-specific quality of life assessed using the Irritable Bowel Syndrome Quality of Life (IBS-QOL) questionnaire. The IBS-QOL contains 34 items and yields a total score ranging from 0 to 100, with higher scores indicating better quality of life. The outcome measure is the change in total IBS-QOL score from baseline to 3 months. |
Three months after enrollment
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Irritable Bowel Syndrome Quality of Life (IBS-QOL) Total Score at 6 Months
Tidsramme: Six months after enrollment
|
IBS-specific quality of life assessed using the Irritable Bowel Syndrome Quality of Life (IBS-QOL) questionnaire. The IBS-QOL contains 34 items and yields a total score ranging from 0 to 100, with higher scores indicating better quality of life. The outcome measure is the change in total IBS-QOL score from baseline to 6 months. |
Six months after enrollment
|
|
Mean Daily Stool Frequency at 3 Months
Tidsramme: Three months after enrollment
|
Mean number of bowel movements per day recorded by participants. The outcome measure is the change in average daily stool frequency from baseline to 3 months. Lower values indicate fewer bowel movements. |
Three months after enrollment
|
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Mean Daily Stool Frequency at 6 Months
Tidsramme: Six months after enrollment
|
Mean number of bowel movements per day recorded by participants. The outcome measure is the change in average daily stool frequency from baseline to 6 months. Lower values indicate fewer bowel movements. |
Six months after enrollment
|
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Mean Bristol Stool Form Scale Score at 3 Months
Tidsramme: Three months after enrollment
|
Stool consistency assessed using the Bristol Stool Form Scale, which ranges from Type 1 (hard stools) to Type 7 (watery stools). Types 3 to 5 are considered normal stool consistency. The outcome measure is the change in mean Bristol Stool Form Scale score from baseline to 3 months. |
Three months after enrollment
|
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Mean Bristol Stool Form Scale Score at 6 Months
Tidsramme: Six months after enrollment
|
Stool consistency assessed using the Bristol Stool Form Scale, which ranges from Type 1 (hard stools) to Type 7 (watery stools). Types 3 to 5 are considered normal stool consistency. The outcome measure is the change in mean Bristol Stool Form Scale score from baseline to 6 months. |
Six months after enrollment
|
Andre resultatmål
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Defecation Pain Visual Analog Scale (VAS) Score at 3 Months
Tidsramme: Three months after enrollment
|
Pain during defecation assessed daily using a Visual Analog Scale (VAS). Scores range from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain. The outcome measure is the change in mean daily VAS score from baseline to 3 months. |
Three months after enrollment
|
|
Defecation Pain Visual Analog Scale (VAS) Score at 6 Months
Tidsramme: Six months after enrollment
|
Pain during defecation assessed daily using a Visual Analog Scale (VAS). Scores range from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain. The outcome measure is the change in mean daily VAS score from baseline to 6 months. |
Six months after enrollment
|
|
Treatment-Emergent Adverse Events
Tidsramme: From enrollment through 6 months
|
Number of participants experiencing any adverse event reported during treatment with either the probiotic supplement or placebo. Adverse events will be collected throughout study participation. |
From enrollment through 6 months
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- NNGYK/09884-2/2026
Plan for individuelle deltagerdata (IPD)
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