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San Jose, CA
A 49-year-old male asked about a 88-year-old male:

Original listerine is 26.9% alcohol. does gargling it prevent viruses like flu or covid or at least make it harder for viruses to start an infection?

1 doctor answer1 doctor weighed in
Dr. Theodore Davantzis
Dentistry 40 years experience
Can't Hurt: But Listerine is for oral bacteria, and may help a bit if you have Strep Throat. The Flu and COVID are airborne, viral upper respiratory infections.

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Last updated Mar 24, 2020

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