Gargling With Green Tea for Prophylaxis of Influenza Infection in Teenagers
NCT ID: NCT01225770
Last Updated: 2013-02-15
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
PHASE3
640 participants
INTERVENTIONAL
2010-11-30
2014-08-31
Brief Summary
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Detailed Description
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Experimental studies have revealed that some components of green tea can prevent influenza infection in vitro. In clinically, gargling with green tea catechins has been reported to have possibilities to preventing influenza infection in adults; however, little clinical evidence in teenagers has so far been existed. Based on this background, the investigators designed a randomized study to evaluate the clinical efficacy of gargling with green tea in preventing influenza infection among high school students.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
NONE
Study Groups
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Green tea
Gargling with green tea
green tea
Gargling three times daily for 90 days
water
Gargling with water
green tea
Gargling three times daily for 90 days
Interventions
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green tea
Gargling three times daily for 90 days
Eligibility Criteria
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Inclusion Criteria
* obtained written informed consent from both the student and parent before participation
* possible to gargle during 90 days
* possible to fill in questionnaire
Exclusion Criteria
* Possessing history of influenza infection within 6 months before entering the study
* Possessing severe immune disease or whole body infection
* severe cardiac, respiratory, renal, or hepatic dysfunction
* diagnosed as inadequate to participate in the study by student doctor
15 Years
20 Years
ALL
Yes
Sponsors
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University of Shizuoka
OTHER
Responsible Party
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Principal Investigators
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Hiroshi Yamada, MD, PhD
Role: STUDY_CHAIR
University of Shizuoka
Locations
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University of Shizuoka
Shizuoka, Shizuoka, Japan
Countries
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Central Contacts
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Facility Contacts
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References
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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.
Other Identifiers
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CT2010001
Identifier Type: -
Identifier Source: org_study_id
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