A Study of Preventive Effect of Lactic Acid Bacteria against Common Cold and Influenza Infection

A Study of Preventive Effect of Lactic Acid Bacteria against Common Cold and Influenza Infection - A Study of Preventive Effect of Lactic Acid Bacteria against Common Cold and Influenza Infection

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000018477

Enrollment

800

Registered

2015-07-29

Start date

2013-12-01

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

No (Healthy adult)

Interventions

Lactic acid bacteria, 1 food per day for 12 weeks. Placebo (not containing lactic acid bacteria), 1 food per day for 12 weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1)Subjects aged 18 to 39 years old. (2)Subjects giving written informed consent.

Exclusion criteria

Exclusion criteria: (1)Subjects who are judged as unsuitable for the study by the investigator for the other reasons. (2)Subjects taking any kind of medicine which affect the result of the trial for habitual use. (3)Pregnant women, lactating women. (4)Subjects with serious hepatic, renal, and cardiovascular dysfunction (including anamnesis).

Design outcomes

Primary

Measure	Time frame
Daily questionnaire symptoms based on Common Cold and influenza-like illness	—

Secondary

Measure	Time frame
Immunological test using bloods collected before and after the intake period (12 weeks)	—

Countries

Japan

Contacts

Public ContactTakashige Oroguchi

Tokai University School of Medicine

oroguchi@is.icc.u-tokai.ac.jp0463-93-1121

Outcome results

None listed

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