NCT06863415

Brief Summary

Evaluate the effectiveness and safety of Bifidobacterium longum subsp. infantis BI45 as a food supplement compared to a placebo in improving intestinal and immune functions in healthy adults.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
90

participants targeted

Target at P75+ for not_applicable healthy

Timeline
Completed

Started Mar 2025

Geographic Reach
1 country

1 active site

Status
not yet recruiting

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

First Submitted

Initial submission to the registry

March 3, 2025

Completed
4 days until next milestone

First Posted

Study publicly available on registry

March 7, 2025

Completed
8 days until next milestone

Study Start

First participant enrolled

March 15, 2025

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 10, 2025

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 25, 2025

Completed
Last Updated

March 10, 2025

Status Verified

March 1, 2025

Enrollment Period

7 months

First QC Date

March 3, 2025

Last Update Submit

March 6, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in the concentration of antimicrobial peptides (LL-37 and calprotectin) in feces before and after intervention

    Detected by Enzyme-Linked Immunosorbent Assay (ELISA).

    Week 0 and Week 8

Study Arms (2)

Probiotic Group

EXPERIMENTAL

Intervention with Bifidobacterium longum subsp. infantis BI45 (30 billion CFU/ day, 3g) was administered daily for 8 weeks. Store in a cool, dry place.

Dietary Supplement: Probiotic

Placebo Group

PLACEBO COMPARATOR

Every day to give 3 g maltodextrin intervention for 8 weeks. Store in a cool and dry place.

Dietary Supplement: Placebo

Interventions

ProbioticDIETARY_SUPPLEMENT

Dietary supplement: Probiotics. The trial period of this study lasts for 2 months (8 weeks), during which each participant will have 3 visits (at month 0, month 1, and month 2).

Probiotic Group
PlaceboDIETARY_SUPPLEMENT

Dietary supplement: Placebo. The trial period of this study lasts for 2 months (8 weeks), during which each participant will have 3 visits (at month 0, month 1, and month 2).

Placebo Group

Eligibility Criteria

Age18 Years - 45 Years
Sexall(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Willing to undergo 3 follow-up visits during the intervention period Be willing to provide blood, urine and stool samples 2 times during the intervention period
  • Willing to self-administer probiotic or placebo once a day during the intervention period
  • Good eyesight, can read and write, can wear glasses
  • Have good hearing and be able to hear and understand all instructions during the intervention

You may not qualify if:

  • Digestive diseases, mainly gastrointestinal diseases (celiac disease, ulcerative colitis, Crohn's disease)
  • Have a serious neurological condition (epilepsy, stroke, severe head trauma, meningitis in the last 10 years, brain surgery, brain tumor, prolonged coma - not including general anaesthesia)
  • Have received/are receiving treatment for the following mental disorders: alcohol/drug/substance abuse dependence, schizophrenia, psychosis, bipolar disorder
  • Take medication for depression or low mood Internal organ failure (heart, liver or kidney failure, etc.)
  • Have received radiation or chemotherapy in the past
  • Have undergone a general anesthesia procedure/procedure within the past three years, or plan to undergo a general anesthesia procedure/procedure within the next 3 months during this trial period
  • Have had hepatitis (hepatitis B, hepatitis C), HIV or syphilis in the past

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Henan University of Technology

Zhengzhou, Henan, 462000, China

Location

MeSH Terms

Interventions

Probiotics

Intervention Hierarchy (Ancestors)

Dietary SupplementsFoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 3, 2025

First Posted

March 7, 2025

Study Start

March 15, 2025

Primary Completion

October 10, 2025

Study Completion

December 25, 2025

Last Updated

March 10, 2025

Record last verified: 2025-03

Locations