Effects of Gargling With Green Tea on Preventing Influenza Infection Among High School Students: A Randomized Clinical Study
Sponsor study identifier
interventional
640
1 country
1
Study Start
November 2010
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
April 2014
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
August 2014
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Experimental and clinical studies in adults have reported that green tea catechins prevent influenza infection. In this clinical randomized study, the investigators aimed to determine the effects of gargling with green tea on the prophylaxis of influenza infection among high school teenagers.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
August 2014
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
October 19, 2010
Actual (reported)October 21, 2010
Actual (reported)November 2010
Date type not reportedThis date has not been verified as actual or estimated.
April 2014
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
August 2014
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
the incidence rates of influenza infection
Until 3 months gargling
severity of influenza symptoms
until 3 months gargling
influenza-free time during the study period
until 3 months gargling
incidence of complications
until 3 months gargling
incidence rates of upper respiratory tract infections
until 3 months gargling
incidence of days of absence from school
until 3 months gargling
Gargling with green tea
Gargling with water
Gargling three times daily for 90 days
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
University of Shizuoka
Shizuoka, Shizuoka, Japan
Ide K, Yamada H, Matsushita K, Ito M, Nojiri K, Toyoizumi K, Matsumoto K, Sameshima Y. Effects of green tea gargling on the prevention of influenza infection in high school students: a randomized controlled study. PLoS One. 2014 May 16;9(5):e96373. doi: 10.1371/journal.pone.0096373. eCollection 2014.
Hiroshi Yamada, MD, PhD
University of Shizuoka
First Submitted
October 19, 2010
First Posted
October 21, 2010
Study Start
November 2010
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
April 2014
Estimated (date passed)Catechin Containing Mask for the Prevention of Influenza Infection
Contact the study team to confirm eligibility.
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
August 2014
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Last Updated
February 15, 2013
Record last verified: 2013-02
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Source: ClinicalTrials.gov.
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