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Effects of Ingestion of Lactic Acid Bacteria on Subjective Physical Symptoms in Children: A Randomized, Double-Blind, Placebo-Controlled, Parallel Group Comparison Study.

Effects of Ingestion of Lactic Acid Bacteria on Subjective Physical Symptoms in Children: A Randomized, Double-Blind, Placebo-Controlled, Parallel Group Comparison Study. - Effects of Ingestion of Lactic Acid Bacteria on Subjective Physical Symptoms in Children.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000058354
Enrollment
200
Registered
2025-07-03
Start date
2025-07-04
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Healthy children

Interventions

Daily ingestion of powdered lactic acid bacteria for 24 weeks. Daily ingestion of placebo powder for 24 weeks.

Sponsors

Hokkaido Information University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Subjects who are between the ages of 2 and 5 years old. 2. Subjects whose parents agree to participate in this study with a written informed consent.

Exclusion criteria

Exclusion criteria: 1. Subjects with serious hepatic, renal, cardiac, lung, gastrointestinal, blood, brain, endocrine or metabolic diseases, and/or with serious medical history of those disease. 2. Subjects who regularly use oral or nasal medications. 3. Subjects who regularly use steroids. 4. Subjects who regularly take foods that affect immune function. 5. Subjects with severe perennial and/or seasonal allergic symptoms. 6. Subjects at risk of allergic reactions to drugs or foods. 7. Subjects who participated in clinical studies of other drugs and foods within the last 4 weeks prior to the current study. 8. Subjects who are deemed ineligible by the principal investigator.

Design outcomes

Primary

MeasureTime frame
Number of days and duration of cold symptoms Number of fever days Number of vomiting Number of days of antibiotics use Number of days absent from nursery school or kindergarten Number of days and duration of diarrhea

Countries

Japan

Contacts

Public ContactNaoyuki HONMA

Hokkaido Information University Health Information Science Center

hisc-acad.res@s.do-johodai.ac.jp011-385-4430

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026