Catechin Gargling for Influenza Infection

University of Shizuoka400 enrolled

Overview

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

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

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

DOUBLE

Enrollment

400

Conditions

Influenza Infection

Interventions

catechin extracts (health food)DRUG

Eligibility

Sex: ALLMin age: 20 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Locations (3)

Seirei Hamamatsu General Hospital

Hamamatsu, Shizuoka, Japan

Shizuoka General Hospial

Shizuoka, Shizuoka, Japan

White Cross Nursing Home

Higashimurayama, Tokyo, Japan

Outcomes

Primary Outcomes

Incidence rates of influenza infection during the study

Secondary Outcomes

severity of symptoms including complications and hospitalization

Data from ClinicalTrials.gov

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