Gargle with green tea to prevent Coronavirus infection. Anti-viral property of Green tea polyphenol, EGCg, helps prevent influenza infection.

As Coronavirus spreads through the nation, many of us are forced to stay at home. While green tea’s anti-viral property is not widely known in the U.S., in Japan many doctors encourage patients to drink and gargle with green tea.

If you are already a regular green tea drinker, here is something that might give you a peace of mind.

If you are not a green tea drinker, but thinking about ways to improve your overall health and boost immune system, read the following to see if it’s right for you. Always check with your doctor first as green tea may interfere or cause problems with your medication.

In Japan where many people traditionally drink green tea, they found another way to benefit from green tea antioxidants. Many doctors in Japan are encouraging their patients to gargle with green tea to prevent infection from flu virus and Coronavirus.

Researchers from National tea research institute in Japan found that polyphenols from green tea and black tea prevents flu infection. EGCg and TFDg prevent flu infection by binding to protein that surrounds influenza virus A and B (Shimamura et. al).

Another research found that Gargling with green tea also shorten duration of flu symptoms such as sore throat, runny nose and coughing (Yamada et. al.).

Green tea polyphenol is also shown to be effective against HIV virus activities (Ono et. al., Shimamura et. al., Suzuki et. al.)

Although the effectiveness of green tea polyphenols on Coronavirus is not yet known, many doctors in Japan are being proactive in preventing and easing symptoms with green tea.

Reference: Nihoncha zensho (Japanese tea encyclopedia), Fuchinoue, Yasumoto. Fuchinoue, Hiroko. 1999

Nihoncha instructor manual, NPO Nihoncha instructor Association. 2006