NCT07377994

Brief Summary

This randomized, double-blind, placebo-controlled clinical trial is designed to evaluate the effects of a Bacillus coagulans-based probiotic product on gut health, immunological parameters, and overall tolerability in healthy adult participants. The study aims to generate clinical evidence on the role of Bacillus coagulans in maintaining intestinal homeostasis and modulating immune responses under normal physiological conditions. Gut health will be assessed through both objective and subjective measures. Intestinal inflammation will be evaluated by measuring fecal calprotectin levels, a well-established biomarker of gut mucosal inflammation. Changes in fecal calprotectin from baseline to the end of the intervention period will be compared between the probiotic and placebo groups to determine the impact of the investigational product on gut inflammatory status. The immunomodulatory effects of the study product will be evaluated by analyzing changes in selected immune and inflammatory markers, including immunoglobulins (IgA, IgG, and IgM). These parameters will be measured at baseline and at the end of the study to assess systemic immune responses associated with supplementation and to compare outcomes between the intervention and placebo groups. In addition to laboratory-based assessments, participant-reported outcomes related to gut health and immune status will be captured using validated questionnaires, including the Gut Health Status Questionnaire (GHSQ) and the Immune Status Questionnaire (ISQ). These tools will be used to evaluate perceived overall relief and changes in gastrointestinal and immune-related well-being over the course of the study. Safety and tolerability of the Bacillus coagulans-based product will be evaluated throughout the study duration by monitoring adverse events and other safety parameters in both the intervention and placebo groups, ensuring suitability of the product for use in a healthy population. Participants will be instructed to consume the assigned study product twice daily, once in the morning and once in the evening after meals, for the duration of the intervention period. Compliance with study product intake will be documented by participants in a subject diary.

Trial Health

75
On Track

Trial Health Score

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

Enrollment
46

participants targeted

Target at P25-P50 for not_applicable

Timeline
0mo left

Started Sep 2025

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
enrolling by invitation

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress99%
Sep 2025May 2026

Study Start

First participant enrolled

September 10, 2025

Completed
4 months until next milestone

First Submitted

Initial submission to the registry

January 5, 2026

Completed
25 days until next milestone

First Posted

Study publicly available on registry

January 30, 2026

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 15, 2026

Completed
25 days until next milestone

Study Completion

Last participant's last visit for all outcomes

May 10, 2026

Expected
Last Updated

January 30, 2026

Status Verified

January 1, 2026

Enrollment Period

7 months

First QC Date

January 5, 2026

Last Update Submit

January 22, 2026

Conditions

Keywords

Gut health and immunomodulatory effect

Outcome Measures

Primary Outcomes (1)

  • Change in fecal calprotectin levels from baseline to the end of the study,

    Fecal calprotectin concentration (µg/g) will be measured at baseline and at the end of the study. The change from baseline will be analyzed.

    Baseline to Week 8 (or end of study)]

Secondary Outcomes (3)

  • Changes in immunological markers (IgA, IgG, IgM) between baseline to the end of study

    Baseline to week 8 (end of the study)

  • Change in Gut Health Status Questionnaire (GHSQ) Total score from baseline to End of the Study

    Baseline to week 8 (End of the Study)

  • Change in Immune Status Questionnaire (ISQ) Total Score from Baseline to End of the Study

    Baseline to week 8 (End of the Study)

Study Arms (2)

Arm I

EXPERIMENTAL

Probiotic

Dietary Supplement: Probiotic (Bacillus Coagulans)

Arm II

PLACEBO COMPARATOR

Placebo

Other: Placebo

Interventions

Experimental

Arm I
PlaceboOTHER

Placebo

Arm II

Eligibility Criteria

Age18 Years - 50 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Male or female, aged between 18 and 50 years.
  • Female participants are either not of childbearing potential, or females of childbearing potential agree to use a medically approved method of birth control and have a negative urine pregnancy test result.
  • In good general health, as determined by medical history, laboratory analysis, and physical examination performed by the study physician.
  • Willing to provide fecal samples as per the study requirements.
  • Willing to participate voluntarily and provide written informed consent.

You may not qualify if:

  • Women who are pregnant or lactating.
  • Subjects who are taking Antibiotic treatment.
  • Subjects suffering from Gastrointestinal disease.
  • Subjects suffering from Diabetes.
  • Subjects suffering from Chronic/iatrogenic Immunodeficiency.
  • Subjects suffering from Abnormal blood pressure.
  • Subjects who are allergic to ingredients of the study Product.
  • Subjects who are Smoker or alcoholic.
  • Subjects who have participated prior in conflicting clinical trial or have participated in the trial over the last 3months.
  • Women who are pregnant, breastfeeding, or planning to become pregnant.
  • Daily use of supplements that contain probiotics or prebiotics within 30 days prior to screening or during study.
  • Subjects with medical conditions affecting immune status (e.g., rheumatoid arthritis, heart failure, hepatitis C, HIV) or taking medications that may impact the immune system, such as antibiotics, antimicrobials, or probiotic sachets.
  • Any surgical treatment within the previous three months or planned during the study.
  • Any subject, in the principal investigator's opinion, not considered suitable for enrolment.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Advanced Gastro Care

Bangalore, Karnataka, 560018, India

Location

MeSH Terms

Interventions

Probiotics

Intervention Hierarchy (Ancestors)

Dietary SupplementsFoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Officials

  • Parag Saudagar

    S K Biobiz Private Limited

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 5, 2026

First Posted

January 30, 2026

Study Start

September 10, 2025

Primary Completion

April 15, 2026

Study Completion (Estimated)

May 10, 2026

Last Updated

January 30, 2026

Record last verified: 2026-01

Data Sharing

IPD Sharing
Will not share

Locations