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 answer • 1 doctor weighed in

Dr. Theodore Davantzisanswered

Dentistry 42 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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