Catechin Gargling for Influenza Infection

October 28, 2006 updated by: University of Shizuoka

A Randomized Clinical Study of Catechin Gargling Effects on the Prevention of Influenza Infection

The purpose of this study is to clarify the preventive effects of catechin gargling on the influenza infection.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

In-vitro experimental studies have revealed that tea catechin extracts induce preventive effects on influenza infection. However, few studies have been conducted on the effects of tea gargling on influenza infection, and the clinical evidence is unclear. Also there have been no studies reported on the gargling effects with tea catechin extracts on the prevention of influenza infection.

Study Type

Interventional

Enrollment

400

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Japan
      • Shizuoka, Japan, 420-8527
        • Shizuoka General Hospial
    • Shizuoka
      • Hamamatsu, Shizuoka, Japan, 430-8558
        • Seirei Hamamatsu General Hospital
    • Tokyo
      • Higashi Murayama, Tokyo, Japan, 189-0021
        • White Cross Nursing Home

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • healthy volunteers
  • aged 20 to 65 years old
  • obtained written informed concent before participation
  • inoculated with influenza vaccine before entering the study

Exclusion Criteria:

  • other gargling except water during the study
  • possessing tea allergy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Incidence rates of influenza infection during the study

Secondary Outcome Measures

Outcome Measure
severity of symptoms including complications and hospitalization

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Shizuoka

Collaborators

White Cross Nursing Home
Seirei Hamamatsu General Hospital
Shizuoka General Hospital

Investigators

  • Principal Investigator: Hiroshi Yamada, MD, PhD, University of Shizuoka

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2005

Study Completion

April 1, 2006

Study Registration Dates

First Submitted

October 13, 2005

First Submitted That Met QC Criteria

October 13, 2005

First Posted (Estimate)

October 14, 2005

Study Record Updates

Last Update Posted (Estimate)

October 31, 2006

Last Update Submitted That Met QC Criteria

October 28, 2006

Last Verified

October 1, 2006

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CT2005002

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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