Funny you say that, I recently read the back of my listerine bottle and it says “Gargle to relieve sore throats due to colds”. I was curious to see if the alcohol free listerine my brother uses said the same thing in the back, lo and behold it didn’t.
So yes, I guess it might help treat the symptoms of sore throat but definitely won’t solve it, as others said the infection is within the tissues and not actually in the throat. As an aside, mouth hygiene is also always important in preventing sickness, and especially important when you’re sick to ensure it doesn’t get any worse.
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