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Completed

NCT Number: NCT00239213

Catechin Gargling for Influenza Infection

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

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Key information

Conditions

Influenza Infection

Age range

20 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan

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About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

catechin extracts (health food)

Drug

Primary outcomes

  1. Incidence rates of influenza infection during the study

Secondary outcomes

  1. severity of symptoms including complications and hospitalization

Sponsors and collaborators

Lead sponsor

University of Shizuoka

Other

Collaborators

  • Seirei Hamamatsu General Hospital
  • Shizuoka General Hospital
  • White Cross Nursing Home

Registry information

Official study title

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

Important dates

Study start
2005
Study completion
2006
First posted
Oct 14, 2005
Registry last updated
Oct 31, 2006

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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