Effects of umesu polyphenol on the prevention of common cold and influenza (placebo-controlled trial)

Effects of umesu phenolics on the prevention of common cold and influenza (placebo-controlled trial) - UPPCI

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000039533

Enrollment

300

Registered

2020-02-21

Start date

2016-12-01

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

common cold, influenza

Interventions

Two groups: a group that gargled with granules containing UPs (UP group) and a group that gargled with granules not containing UPs (placebo group). The 2 g/packet UP granules used in the present study

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Halthy volanteers

Exclusion criteria

Exclusion criteria: Those with serious somatic disorders including cerebrovascular disease, ischemic heart disease, cancer, and diabetes mellitus, and those who were pregnant.

Design outcomes

Primary

Measure	Time frame
The incidence and duration of common cold/influenza over the full 9-week trial period. The incidence and duration of common cold and influenza symptomatic days by week.	—

Secondary

Measure	Time frame
The incidence and duration of common cold and influenza symptoms(runny nose, sneezing, sore throat/throat discomfort (irritation), headache, cough, expectoration, fever, joint pain, and fatigue/malaise) over the full 9-week trial period. The incidence and duration of common cold and influenza symptoms by week.	—

Countries

Japan

Contacts

Public ContactTakahiko Mitani

Wakayama University Research Center for Food and Agriculture

tmitani@wakayama-u.ac.jp+81-73-457-7562

Outcome results

None listed

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