A Study for Evaluating the Effects of Oral Intake of Lactic Acid Bacteria on Pathogenesis of Common Cold and Influenza-like Illness.

A Study for Evaluating the Effects of Oral Intake of Lactic Acid Bacteria on Pathogenesis of Common Cold and Influenza-like Illness. - A Study for Evaluating the Effects of Oral Intake of Lactic Acid Bacteria on Pathogenesis of Common Cold and Influenza-like Illness.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000017274

Enrollment

200

Registered

2015-04-25

Start date

2012-12-01

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

Healthy adult

Interventions

Lactic acid bacteria, 10 weeks consumption. Placebo (not containing lactic acid bacteria), 10 weeks consumption

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1)Subjects aged 30 to 60 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)Subjects daily consuming supplements or foods containing lactic acid bacteria. (4)Pregnant women, lactating women. (5)Alcoholics (6)Subjects presenting known food allergy (milk allergy) and serious hay fever. (7)Subjects attending other tests. (8)Subjects with serious hepatic, renal, and cardiovascular dysfunction (including anamnesis). (9)Subjects with anemic. (10)Subjects who had received the influenza vaccination within the previous 18 months.

Design outcomes

Primary

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

Secondary

Measure	Time frame
Immunological test using bloods collected before and after the intake period (10 weeks)	—

Countries

Japan

Contacts

Public ContactKo Masuda

SOUKEN Co., Ltd Management Division

k_masuda@mail.souken-r.com03-5408-1555

Outcome results

None listed

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