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A member asked:
Can mouthwash such as listerine make ulcers in the mouth worse?
6 doctors weighed in across 2 answers
Yes: There is a high concentration of alcohol in listerine that can irritate the ulcers and make it take longer to heal.
Answered 3/21/2015
5.2k views
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Should make it bette: Canker sores are wounds in mouth which can be helped by rinsing w antibacterial rinse such as listerine. We recommend the alcohol free version as alcohol in the rinse dries the mouth without additional antibacterial effects.
Answered 5/5/2016
5.2k views
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