Not likely: When used as directed listerine is very safe and good at helping reduce gingivitis. It does have alcohol (burn) which can irritate the gums if held in the mouth too long. If you have dry mouth, listerine could also make you even drier. Dry mouth, xerostomia, can cause teeth to decay very quickly.
Answered 8/1/2020
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No: Listerine is not bad for your teeth, but over use can dry your gums due to the alcohol content.
Answered 8/20/2018
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