NCT06248177

Brief Summary

The goal of this randomized clinical trial is to evaluate the effect on the microbiota and the reduction in the number and/or intensity of symptoms of gastrointestinal discomfort of consuming a probiotic or placebo for 6 weeks in adult women and men. The main questions to answer are:

  • Group 1 (n=15): 6 weeks daily consumption of one probiotic capsule + 4 weeks wash-out period+ 6 weeks daily consumption of one placebo capsule.
  • Group 2 (n=15): 6 weeks daily consumption of one placebo capsule + 4 weeks wash-out period+ 6 weeks daily consumption of one probiotic capsule.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
29

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jan 2024

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 16, 2024

Completed
15 days until next milestone

First Submitted

Initial submission to the registry

January 31, 2024

Completed
8 days until next milestone

First Posted

Study publicly available on registry

February 8, 2024

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 30, 2024

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

July 30, 2024

Completed
Last Updated

November 19, 2024

Status Verified

January 1, 2024

Enrollment Period

6 months

First QC Date

January 31, 2024

Last Update Submit

November 15, 2024

Conditions

Keywords

MicrobiotaGastrointestinal symptomsProbioticHumansCrossover

Outcome Measures

Primary Outcomes (1)

  • Fecal microbiota

    Fecal microbiota of participants will be analyzed by bacterial 16S gene sequencing technology.

    Clinical Investigation Days 1, 2, 3 and 4.

Secondary Outcomes (13)

  • Salivary cortisol

    Clinical Investigation Days 1, 2, 3 and 4 (at wake up in the morning, and at the same time in each Clinical investigation days).

  • Body weight

    Clinical Investigation Days 1, 2, 3 and 4

  • Height

    Clinical Investigation Day 1

  • Body mass index

    Clinical Investigation Days 1, 2, 3 and 4

  • Body fat percentage

    Clinical Investigation Days 1, 2, 3 and 4

  • +8 more secondary outcomes

Study Arms (2)

Group 1

ACTIVE COMPARATOR

6 weeks daily consumption of one probiotic capsule + 4 weeks wash-out period+ 6 weeks daily consumption of one placebo capsule

Dietary Supplement: ProbioticDietary Supplement: Placebo

Group 2

ACTIVE COMPARATOR

6 weeks daily consumption of one placebo capsule + 4 weeks wash-out period+ 6 weeks daily consumption of one probiotic capsule

Dietary Supplement: ProbioticDietary Supplement: Placebo

Interventions

ProbioticDIETARY_SUPPLEMENT

Probiotic capsules

Group 1Group 2
PlaceboDIETARY_SUPPLEMENT

Placebo capsules

Group 1Group 2

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Volunteers of both sexes aged between 18 and 65 years old.
  • Volunteers with a body mass index between 18.5 and 30 kg/m2.
  • Present a stable weight (+/- 3 kg) in the last three months prior to the start of the study.
  • Subjects must be able to understand and be willing to sign the informed consent, and must comply with all study procedures and requirements.

You may not qualify if:

  • Subjects with relevant functional or structural anomalies of the digestive system, such as malformations, angiodysplasias, active peptic ulcers, chronic inflammatory or malabsorption diseases, hiatal hernia, reflux with medication, helicobacter pylori, celiac disease and other diagnosed intolerances, etc.
  • Subjects with surgical interventions with permanent consequences in the digestive system (for example, gastroduodenostomy).
  • Subjects following treatments that alter gastrointestinal function, either chronically or occasionally.
  • Subjects who are being treated with antibiotics (in order to participate, they do not have to have taken antibiotics during the two months prior to the baseline visit).
  • Subjects with any type of cancer or undergoing treatment for it, or with less than 5 years since its eradication.
  • Subjects with any liver disease (may participate with non-alcoholic fatty liver disease).
  • Subjects with allergy to any component of the product under study.
  • Subjects with a high alcohol intake, more than 14 units/day (women) and 20 units/day (men).
  • Pregnant or breastfeeding women.
  • Subjects who present some type of cognitive and/or psychological impediment.
  • Subjects in whom poor collaboration is expected or with difficulties in following the study procedures.
  • Subjects who work with shift changes that include nights.
  • Subjects who follow any type of supplementation that interferes with the study (example: other probiotics).
  • Subjects who are immersed in a significant lifestyle change.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Centre for Nutrition Research

Pamplona, Navarre, Spain

Location

MeSH Terms

Interventions

Probiotics

Intervention Hierarchy (Ancestors)

Dietary SupplementsFoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Officials

  • Fermín I Milagro Yoldi, PhD

    University of Navarra

    PRINCIPAL INVESTIGATOR
  • Idoia Ibero-Baraibar, PhD

    University of Navarra

    STUDY CHAIR
  • Carlos González-Navarro, PhD

    University of Navarra

    STUDY CHAIR
  • Santiago Navas-Carretero, PhD

    University of Navarra

    STUDY CHAIR
  • Gabriela Arias

    University of Navarra

    STUDY CHAIR
  • Roncesvalles Garayoa, PhD

    University of Navarra

    STUDY CHAIR
  • María Goñi

    University of Navarra

    STUDY CHAIR
  • Salomé Pérez

    University of Navarra

    STUDY CHAIR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
The products (experimental and placebo), will be produced by an external producer, who will save the codes. None of the researchers involved in the study development or analyses will know the association until the end of the study.
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: Randomised, double blinded, crossover intervention
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 31, 2024

First Posted

February 8, 2024

Study Start

January 16, 2024

Primary Completion

June 30, 2024

Study Completion

July 30, 2024

Last Updated

November 19, 2024

Record last verified: 2024-01

Data Sharing

IPD Sharing
Will not share

Locations