NCT01225770

Gargling With Green Tea for Prophylaxis of Influenza Infection in Teenagers

Effects of Gargling With Green Tea on Preventing Influenza Infection Among High School Students: A Randomized Clinical Study

• Status: Unknown
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 640 (estimated)
• Sponsor: University of Shizuoka · Academic / Other
• Sex: All
• Age: 15 Years – 20 Years
• Healthy volunteers: Accepted

Summary

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.

Detailed description

Influenza infection is the principal cause of acute respiratory illnesses and occurs in epidemic or pandemic worldwide. It spreads easily among high school students and from them to the rest of the community; therefore the prevention of influenza is very important. 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

• Influenza Infection

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	green tea	Gargling three times daily for 90 days

Timeline

• Start date: 2010-11-01
• Primary completion: 2014-04-01
• Completion: 2014-08-01
• First posted: 2010-10-21
• Last updated: 2013-02-15

Locations

1 site across 1 country: Japan